581 results on '"Nascente, Adriano Stephan'
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2. Multifunctional microorganisms and phosphorus dosages in soybean-maize and soybean-rice successions under no-till systems in the cerrado
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Dennis Ricardo Cabral Cruz, Natasha Ohanny da Costa Monteiro, Izabely Vitória Lucas Ferreira, Victórya Gabrielly Manzan Souza, Juracy Barroso Neto, Mariana Aguiar Silva, and Adriano Stephan Nascente
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bacteria ,co-inoculation ,glycine max ,oryza sativa ,solubilization ,zea mays. ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
Multifunctional phosphate solubilizing microorganisms can contribute to reducing phosphorus doses without affecting the grain yield of crops. The aim of this work was to evaluate agricultural production systems involving soybean-maize and soybean-rice successions, inoculation of beneficial microorganisms and application of phosphorus doses with a view to sustainable intensification of agriculture and soil health and fertility in the Cerrados region. The experimental design was a randomized block design in a 2x4 factorial scheme with four replications. The treatments were composed of the combination of two phosphorus doses, 50% (45 kg ha-1 of P2O5) and 100% (90 kg ha-1 of P2O5) of the recommended dose with four uses of multifunctional microorganisms: 1. BRM 32111 (Burkholderia sp.), 2. BRM 32114 (Serratia marcescens), 3. co-inoculation (BRM 32111 + BRM 32114), and 4. control (no application of microorganisms). The microorganisms provided significant increases in the 100-grain weight and grain yield of soybeans, dry matter and nutrient accumulation of rice and maize, reduction of phytopathogenic fungus propagules, and increased accumulation of nutrients and activity of the enzymes Betaglicosidase and Arilsulfatase in the soil. Applying 50% phosphorus reduced the 100-grain weight and grain yield of soybean, dry matter and nutrient accumulation of rice, propagules of Trichoderma spp., and the nutrients in the soil. The soybean-maize succession showed higher levels of Arylsulfatase than the soybean-rice succession. The highest soybean yields were obtained by applying BRM 32114 with 50% and co-inoculation with 100% phosphorus.
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- 2024
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3. Mixes of cover crops and Trichoderma asperellum for enhancing soybean crop yield and sustainability
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Fernando Couto de Araújo, Adriano Stephan Nascente, Marta Cristina Corsi de Filippi, and Mariana Aguiar Silva
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glycine max ,trichoderma asperellum ,multifunctional microorganisms ,crop rotation ,millet ,Agriculture (General) ,S1-972 - Abstract
Cover crops during the off-season and multifunctional microorganisms represent strategic technologies with potential to enhance the sustainability of soybean production. This study aimed to investigate the effects of cover crop mixes and the application of multifunctional microorganisms on the economic analysis, gas exchange, yield components and grain yield of soybean plants. The experimental design followed a randomized block pattern, in a 6 x 2 factorial arrangement, with four replications. The treatments consisted of six cover crop combinations [fallow (control); millet (Pennisetum glaucum) with crotalarias (Crotalaria juncea, C. spectabilis and C. ochroleuca); millet and pigeon pea (Cajanus cajanus); millet and Urochloa ruziziensis; millet, U. ruziziensis and pigeon pea; millet and buckwheat (Fagopyrum esculentum)], with or without the application of a Trichoderma asperellum pool. The combination of millet + U. ruziziensis and millet + U. ruziziensis + pigeon pea showed the highest dry matter production and yielded the greatest nutrients content in the straw, which could provide a reduction in fertilization for the following crop. The soybean plants cultivated after millet + U. ruziziensis and millet + U. ruziziensis + pigeon pea demonstrated elevated photosynthetic rates and improved the instantaneous water-use efficiency. The application of multifunctional microorganisms led to a 16 % increase in the photosynthetic rate of the soybean plants. The highest yield was achieved by the soybean plants cultivated in areas with millet + U. ruziziensis and millet + U. ruziziensis + pigeon pea. Moreover, the application of multifunctional microorganisms contributed to increase the pod count per meter, grains per pod, mass of 100 seeds and overall soybean grain yield.
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- 2024
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4. Cover crops and multifunctional microorganisms can affect development of upland rice
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Couto de Araujo, Fernando, Nascente, Adriano Stephan, Filippi, Marta Cristina Corsi de, Silva, Mariana Aguiar, Sousa, Vinicius Silva, and Lanna, Anna Cristina
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- 2021
5. Rhizobacterium 'Serratia' sp. And phosphorus fertilization rates affect aerobic rice development
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Nascente, Adriano Stephan, de Filippi, Marta Cristina Corsi, de Sousa, Thatyane Pereira, Chaibub, Amanda Abdallah, de Souza, Alan Carlos Alves, and Lanna, Anna Cristina
- Published
- 2020
6. Lithothamnium Effects on Soil Attributes, Phosphorus Utilization Efficiency, and Grain Yield of Soybeans, Corn, and Common Bean
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Adriano Stephan Nascente, Tarcísio Cobucci, and Marco Antonio Goes de Araujo
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Agriculture (General) ,S1-972 - Abstract
Lithothamnium is a source of organic origin fertilizer that can be used to improve soil biochemical conditions and the initial development of plants and grain yield. This study aimed to evaluate the effect of Lithothamnium on initial soil chemical attributes and its effects on phosphorus (P) release (PUE—plant phosphorus use efficiency) and yield of soybean, corn, and common beans. Three experiments were conducted from 2020 to 2023 in a randomized block design with six replications. (1) Under greenhouse conditions, in the factorial scheme, with four doses of Lithothamnium with and without P, (2) under field conditions, in the factorial scheme with five calcium (Ca) doses × three sources of Ca, and (3) also, under field conditions, with a combination of four doses of Lithothamnium and four doses of P. The results of the experiment under greenhouse conditions showed that the increase in Lithothamnium doses provided to the soil a reduction in active and potential acidity very quickly (30 days) with a direct effect on the increase in clay activity (more negative charges). Besides, it increased the level of P and Ca in the soil and improved the amount of P and Ca absorbed by the soybean plants. Therefore, it showed the great efficiency of Lithothamnium in releasing P (from 13 to 30 ppm of P when increasing Lithothamnium rates). In the second experiment, it was concluded that Ca from Lithothamnium was the most efficient source for the initial chemical conditions in the furrow and that it provided significant increments in grain yield and P and Ca contents in the petiole of soybean plants. After these results, six field experiments showed significant increases in the efficiency of PUE in common bean, soybean, and corn crops (63% on average). Lithothamnium has become an indispensable technology to provide greater productive efficiency for crops.
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- 2024
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7. Interação de plântulas de soja com rizobactérias benéficas
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Laylla Luanna de Mello Frasca, Cássia Cristina Rezende, Mariana Aguiar Silva, Anna Cristina Lanna, Dennis Ricardo Cabral Cruz, and Adriano Stephan Nascente
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Glycine max L ,Growth promotion ,Rhizobacteria ,Sustainability. ,Agriculture (General) ,S1-972 - Abstract
Beneficial rhizobacteria are multifunctional microorganisms that stimulate plant growth through direct mechanisms such as the solubilization of phosphorus and potassium present in soil minerals, biological nitrogen fixation and production of plant hormones. The objective of this study was to determine the effect of beneficial rhizobacteria on the initial development, promoting growth and resistance of soybean seedlings, aiming not only for increased production but also for agricultural sustainability through the maximization of biological efficiency in the early development of soybean seedlings. The experiment, under controlled conditions, was conducted in a completely randomized design, with four treatments and ten replications. The treatments consisted in the microbiolization of soybean seeds with: 1. Control (without microorganism); 2. Serratia marcenses (BRM 32114); 3. Bacillus spp. (BRM63573) and 4. BRM 32114 + (BRM63573). After the microbiolization of the seeds, they were sown and placed to germinate, after 12 days, the seedlings were harvested and divided into shoots and roots. The roots were washed and photographed with digital camera. The images were analyzed and determined length, diameter, surface area and volume of roots. Then, root and shoot were dried and weighed for biomass determination. Co-inculation, BRM 32114+ BRM63573, promoted greater robustness of the root system of soybean seedlings with increased length (16.2%), diameter (22.5%), volume (43.4%) and dry biomass (29.7%). The dry matter of shoots and total soybean seedlings was superior to the control treatment in all treatments with rhizobacteria. Therefore, plant growth promoting
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- 2024
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8. Sustainable agricultural practices to improve soil quality and productivity of soybean and upland rice
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Silva, Mariana Aguiar, Nascente, Adriano Stephan, de Filippi, Marta Cristina Corsi, de Mello Frasca, Luanna, and Rezende, Cassia Cristina
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- 2023
9. Effect of bioagents and cover crops on soil attributes and common bean plant development
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Laylla Luanna de Mello Frasca, Cássia Cristina Rezende, Mariana Aguiar Silva, Anna Cristina Lanna, and Adriano Stephan Nascente
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phaseolus vulgaris l. ,multifunctional microorganisms ,sustainable agriculture ,Agriculture (General) ,S1-972 - Abstract
The search for cultivation techniques that provide productive, social and environmental benefits to the agroecosystem is of great seriousness for the sustainable intensification of agriculture. This study aimed to determine the effect of crop cover crops on the soil attributes and development of bean plants treated with the consortium of bioagents Serratia marcencens + Trichodermakoningiopsis grown in the winter. The experiments were conducted for three crop seasons, in a randomized blocks design arranged in a 2 x 8 factorial scheme, with four replications. The treatments consisted of the combination of eight cover crops with two microbial treatments. The bioagents and the mix of cover crops, especially the treatment 2 (corn) and the mixes 3 (millet, Crotalariaochroleuca, black oat, white oat, buckwheat and coracana grass) and 5 (black oat, buckwheat, millet, Piatã grass and C. Ocholeuca), provided significant increases in the soil chemical and biological quality, with increases in the contents of Ca, Mg, K, H + Al and organic matter, as well as in the main soil pathogens that affect the bean crop, concerning fallow. In addition, there was an increase in the number of pods per plant and grains per pod. The use of these technologies provided savings, if compared to the use of chemical fertilization.
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- 2023
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10. Plantas de cobertura inoculadas com microrganismos multifuncionais na entressafra em sistemas de produção da região do Cerrado
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Laylla Luanna de Mello Frasca, Cássia Cristina Rezende, Mariana Aguiar Silva, Anna Cristina Lanna, Jessica Rodrigues de Mello Duarte, and Adriano Stephan Nascente
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Bioagentes ,Biomassa ,Cobertura vegetal ,Efeitos benéficos ,Nutriente. ,Agriculture (General) ,S1-972 - Abstract
Práticas agrícolas, como o uso de plantas de cobertura inoculadas com microrganismos, objetivam transformar os sistemas produtivos em ecossistemas sustentáveis, uma vez que reduzem os impactos negativos ao ambiente e os custos de produção e, ao mesmo tempo, incrementam a produtividade das culturas principais por meio da melhoria nos atributos do solo. Este estudo objetivou determinar o efeito da aplicação de rizobactérias benéficas em plantas de cobertura cultivadas na entressafra, no acúmulo de nutrientes por essas plantas e no controle de plantas daninhas. Os experimentos foram conduzidos em área experimental em Santo Antônio de Goiás, Goiás, nas safras 2020, 2021 e 2022, com delineamento em blocos casualizados, no esquema fatorial 2x8 e quatro repetições. Os tratamentos consistiram na combinação de 8 coberturas vegetais ((1. pousio/plantas daninhas), 2. Milho, 3. Mix 1 (Tremoço Branco, Trigo Mourisco, Aveia Branca, Aveia Preta, C. ochroleuca, C. Juncea, Nabo Forrageiro, Capim coracana); 4. Mix 2 (trigo Mourisco, C. spectabiliis, nabo forrageiro, aveia preta); 5. Mix 3 (Milheto, C. ochroleuca, aveita preta, aveia branca, trigo mourisco, Capim coracana); 6. Mix 4 (C. spectabilis, trigo mourisco, milheto e C. breviflora); 7. Mix 5 (Aveia, Trigo Mourisco, Milheto, Piatã e C. Ocholeuca); e 8. Mix 6 (Aveia preta, Nabo Forrageiro, Tremoço Branco, Capim coracana, Trigo Mourisco)) com ou sem microrganismos (rizobactérias Serratia marcencens (BRM 32114) + Bacillus sp. (BRM 63573)). As avaliações consistiram no teor de nutrientes e biomassa seca da parte aérea, utilizando o teste estatístico LSD (p
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- 2023
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11. Management of the fertilization in Brazilian Savannas with phosphorus and potassium in the succession of soybean, millet and common bean irrigated with center-pivot system
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da Silveira, Pedro Marques, Nascente, Adriano Stephan, Stone, Luis Fernando, and Carvalho, Maria da Conceicao Santana
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- 2022
12. BIOAGENTS AND MIX OF COVER PLANTS AFFECTING SOYBEAN
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Laylla Luanna De Mello Frasca, Cássia Cristina Rezende, Mariana Aguiar Silva, Anna Cristina Lanna, Marta Cristina Corsi Filippi, and Adriano Stephan Nascente
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Glycine max. Rizobactérias. Produtividade. Coberturas vegetais. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
A busca por práticas de cultivo que proporcionem benefícios produtivos, sociais e ambientais ao agroecossistema é de grande importância para a intensificação sustentável da agricultura. O objetivo deste trabalho foi determinar o efeito de microrganismos multifuncionais (MM) e mix de plantas de cobertura sobre as trocas gasosas, componentes de produção e produtividade de grãos da soja. No experimento de campo, conduzido por duas safras agrícolas, utilizou-se o delineamento experimental de blocos casualizados em esquema fatorial 8x2, com quatro repetições. Os tratamentos foram compostos pela combinação de oito coberturas vegetais e do uso ou não MM. As coberturas vegetais foram compostas de: 1. Pousio; 2. Milho; 3. Mix 1 [Tremoço Branco, Trigo Mourisco, Aveia Branca, Aveia Preta, C. ochroleuca, C. Juncea, Nabo Forrageiro, Capim coracana] 4. Mix 2 (trigo Mourisco, C. spectabiliis, nabo forrageiro, aveia preta); 5. Mix 3 [Milheto, C. ochroleuca, aveia preta, aveia branca, trigo mourisco, Capim coracana]; 6. Mix 4 (C. spectabilis, trigo mourisco, milheto e C. breviflora); 7. Mix 5 [Aveia, Trigo Mourisco, Milheto, Piatã e C. Ocholeuca); e 8. Mix 6. (Aveia preta, Nabo Forrageiro, Tremoço Branco, Capim coracana, Trigo Mourisco). O consórcio de MM utilizado foi Serratia marcenses (BRM 32114) + Bacillus sp. (BRM 63573). Plantas de soja co-inoculadas com (BRM 32114) + (BRM 63573) apresentaram aumento na taxa fotossintética (16,65%), condutância estomática (37,50%), concentração interna de CO2 (10%), número de vagens por planta (15%), massa de 100 grãos (4,04%) e produtividade de grãos (14,83%). Contudo, não foram observadas diferenças nas plantas de soja cultivadas em sucessão aos mix de plantas de cobertura, com exceção do número de grãos por vagem. Portanto, nesse estudo, o destaque foi para o consórcio de microrganismos multifuncionais, tecnologia considerada estratégica para a intensificação sustentável da agricultura.
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- 2023
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13. Pod positioning and grain yield of common bean as affected by sowing density, nitrogen fertilization and fertilization depth
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José Geraldo da Silva, Enderson Petrônio de Brito Ferreira, Adriano Stephan Nascente, Pedro Henrique Lopes Sarmento, and Matheus Messias
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mechanized harvesting ,n-fertilizer ,phaseolus vulgaris ,pod distribution. ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
The positioning of pods in common bean directly affects grain losses in mechanized harvesting. However, only few studies have assessed facttors that can affect pods positioning. The objective of this work was to determine the effect of plant density, nitrogen fertilization, and fertilization depth on the distribution of pods of the common bean. The field experiments were carried out in two cropping seasons, 2017 and 2018, during the winter period in the Cerrado region. The experimental design was randomized blocks in a 4x2 factorial scheme, with four replications. The treatments consisted of the combination of four sowing densities (5, 10, 15, and 20 plants m-1) with two depths of fertilizer application (6 and 12 cm). The results allowed inferring that the depth of the fertilization does not affect the distribution of pods in the common bean. Plant density does not affect common bean grain yield. More than a quarter of the common bean pods of the BRS FC104 are positioned close to the ground, below 100 mm, in the area where harvester machines operate. Nitrogen fertilization and plant density affect the distribution of pods in common bean plants. At higher doses of N (90 kg ha-1), plant density should be increased. On the other hand, at lower doses (45 kg ha-1), plant density must be reduced. It is concluded that the sowing density can be an efficient strategy to provide the highest positioning of pods in the upper part of the common bean plants, reducing harvest loss.
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- 2023
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14. Desenvolvimento inicial de arroz de terras altas inoculado e coinoculado com rizobactérias multifuncionais
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Mariana Aguiar Silva, Adriano Stephan Nascente, Dennis Ricardo Cabral Cruz, Laylla Luanna de Mello Frasca, José Francisco Arruda e Silva, Amanda Lopes Ferreira, Enderson Petrônio de Brito Ferreira, Anna Cristina Lanna, Gustavo de Andrade Bezerra, and Marta Cristina Corsi de Filippi
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Azospirillum brasilense ,Bacillus sp. ,Promoção de crescimento ,Oryza sativa ,Sustentabilidade. ,Agriculture (General) ,S1-972 - Abstract
A inoculação e coinoculação do arroz de terras altas com rizobactérias multifuncionais pode promover o crescimento das plantas, especialmente do sistema radicular. Assim, este estudo teve como objetivo avaliar o efeito da inoculação e coinoculação com Azospirillum sp. e Bacillus sp. no desenvolvimento inicial do arroz de terras altas. O experimento foi conduzido em delineamento inteiramente casualizado com 4 tratamentos e 10 repetições, totalizando 40 parcelas. Os tratamentos foram: 1) Ab-V5 (Azospirillum brasilense), 2) BRM 63573 (Bacillus sp.), 3) coinoculação de Ab-V5 + BRM 63573 e 4) controle (sem rizobactérias). A inoculação e coinoculação com as rizobactérias multifuncionais Ab-V5 e BRM 63573 proporcionaram efeitos positivos no desenvolvimento inicial do arroz de terras altas. A inoculação com o isolado BRM 63573 teve efeitos significativos no comprimento da raiz, parte aérea e biomassa total, enquanto a inoculação com o isolado Ab-V5 teve efeitos significativos no comprimento da raiz e produção de raiz e biomassa total. O tratamento com coinoculação teve efeitos significativos em variáveis como diâmetro, volume e superfície total de raiz e biomassa de raiz e total. O tratamento controle (sem rizobactérias multifuncionais) apresentou os piores resultados para a maioria das variáveis analisadas.
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- 2023
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15. Biochemical characterization of individual and combined plant growth-promoting microorganisms
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Adriano Stephan Nascente, Zainab Temitope Ishola, Marta Cristina Corsi de Filippi, Mariana Aguiar Silva, Dennis Ricardo Cabral Cruz, and Gustavo de Andrade Bezerra
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bacteria isolates ,multifunctional microorganisms ,nitrogen assimilation ,Agriculture (General) ,S1-972 - Abstract
The increasing demand for using microorganisms in agriculture to improve food production requires constantly assessing microbial diversity. This study aimed to investigate the biochemical properties of individual and combined multifunctional microorganisms, as well as to identify potential applications in biotechnology or agriculture. The experiment comprised 29 treatments, with 7 single and 21 combined microorganisms: M01 (Serratia marcescens), M02 (Bacillus toyonensis), M03 (Phanerochaete australis), M04 (Trichoderma koningiopsis), M05 (Azospirillum brasilense),M06 (Azospirillum sp.), M07 (Bacillus sp.), M08 to M28 (combination among these microorganisms) and M29 (control - no microorganisms). All the single and combined treatments assimilated nitrogen, produced siderophores and indoleacetic acid and solubilized phosphate. Only the treatments M04,M13 and M26 produced HCN. Additionally, all treatments, except for M03, produced biofilm. Only M03,M07, M09, M10, M12 and M13 solubilized potassium.
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- 2023
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16. CONSORTIUM OF MULTIFUNCTIONAL MICROORGANISMS IN SOYBEAN CULTURE
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Laylla Luanna De Mello Frasca, Adriano Stephan Nascente, Cássia Cristina Rezende, Mariana Aguiar Silva, Anna Cristina Lanna, Enderson Petrônio de Brito Ferreira, and Jessica Rodrigues de Mello Duarte
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Glycine max. Rizobactérias. Produtividade. Trocas gasosas. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
A utilização de microrganismos multifuncionais (MM) beneficia diretamente o crescimento e desenvolvimento de plantas em decorrência da produção de fitormônios e sideróforos, suprimento de nutrientes e assimilação de nitrogênio atmosférico (N2); bem como, indiretamente, por proteger as plantas contra patógenos. Dessa forma, a busca por tecnologias de cultivo que proporcionem incrementos produtivos e minimizem custos de produção e impactos negativos ao ambiente é de grande importância na busca por sistemas agrícolas sustentáveis. O objetivo do trabalho foi determinar o efeito de microrganismos multifuncionais, sobre as trocas gasosas, produtividade de grãos e componentes de produção em plantas de soja. No experimento de campo, safra 2019/2020, utilizou-se o delineamento experimental de blocos casualizados, com 32 repetições. As plantas de soja foram tratadas com o consórcio de microrganismos Serratia marcenses (BRM 32114) + Bacillus spp. (BRM63573) e, como controle, plantas de soja tratadas sem o consórcio. Plantas de soja tratadas com microrganismos apresentaram aumento na taxa fotossintética (16,65%), condutância estomática (37,50%), concentração interna de CO2 (10,36%), massa de 100 grãos (4,04%) e produtividade de grãos (14,83%) em relação às plantas não tratadas. Portanto, a utilização de consórcio de microrganismos multifuncionais, ou seja, combinação de múltiplas funcionalidades advindas de diferentes microrganismos, mostra potencial em aumentar a performance agronômica de plantas de soja. O uso da tecnologia de coinoculação figura-se como componente estratégico para alcançar a agricultura sustentável.
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- 2023
17. Clearfield upland rice intercropped with Urochloa ruziziensis for grain, increased revenue and environmental preservation
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de Sousa Santos, Fenelon Lourenço, primary, Nascente, Adriano Stephan, additional, Lacerda, Mabio Chisley, additional, and Calil, Francine Neves, additional
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- 2024
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18. Microorganismos multifuncionais na agricultura: uma revisão sistemática sobre bactérias solubilizadoras de fósforo
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Cruz, Dennis Ricardo Cabral, primary, Ferreira, Izabely Vitória Lucas, additional, Monteiro, Natasha Ohanny da Costa, additional, Nascente, Adriano Stephan, additional, Oliveira, Rafael Bueno, additional, Santos, Samuel Gonçalves Ferreira dos, additional, Rosa, Cláudia Oliveira, additional, and Vieira, Igor Cristian de Oliveira, additional
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- 2024
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19. Inoculation and co-inoculation with multifunctional rhizobacteria for the initial development of soybean
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Mariana Aguiar Silva, Dennis Ricardo Cabral Cruz, Laylla Luanna de Mello Frasca, Marta Cristina Corsi de Filippi, Amanda Lopes Ferreira, and Adriano Stephan Nascente
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glycine max ,bacillus sp. ,serratia sp. ,Agriculture (General) ,S1-972 - Abstract
Soybean inoculation and co-inoculation with multifunctional rhizobacteria is a sustainable alternative that may contribute to plant growth and increased agricultural production, making the product more competitive, as well as reducing costs for the producer. This study aimed to evaluate the effect of inoculation and co-inoculation with multifunctional Serratia sp. and Bacillus sp. rhizobacteria on the early development of soybean. A completely randomized experimental design was used, with four treatments and ten replicates, totaling 40 experimental plots. The treatments consisted of the microbiolization of soybean seeds and a control treatment: BRM 32114 (Serratia sp.) isolate; BRM 63573 (Bacillus sp.) isolate (formerly named 1301); co-inoculation with BRM 32114 + BRM 63573; and control (without microbiolization). BRM 32114 and BRM 63753, both isolated and combined, were efficient to improve the initial development of soybean seedlings, providing significant effects for most of the analyzed variables (length, total surface, root volume and root, shoot and total biomass), when compared to the control treatment.
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- 2022
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20. Lithothamnium Effects on Soil Attributes, Phosphorus Utilization Efficiency, and Grain Yield of Soybeans, Corn, and Common Bean.
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Nascente, Adriano Stephan, Cobucci, Tarcísio, Goes de Araujo, Marco Antonio, and Merah, Othmane
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CROP yields , *PLANT yields , *GRAIN yields , *ORGANIC fertilizers , *PLANT development - Abstract
Lithothamnium is a source of organic origin fertilizer that can be used to improve soil biochemical conditions and the initial development of plants and grain yield. This study aimed to evaluate the effect of Lithothamnium on initial soil chemical attributes and its effects on phosphorus (P) release (PUE—plant phosphorus use efficiency) and yield of soybean, corn, and common beans. Three experiments were conducted from 2020 to 2023 in a randomized block design with six replications. (1) Under greenhouse conditions, in the factorial scheme, with four doses of Lithothamnium with and without P, (2) under field conditions, in the factorial scheme with five calcium (Ca) doses × three sources of Ca, and (3) also, under field conditions, with a combination of four doses of Lithothamnium and four doses of P. The results of the experiment under greenhouse conditions showed that the increase in Lithothamnium doses provided to the soil a reduction in active and potential acidity very quickly (30 days) with a direct effect on the increase in clay activity (more negative charges). Besides, it increased the level of P and Ca in the soil and improved the amount of P and Ca absorbed by the soybean plants. Therefore, it showed the great efficiency of Lithothamnium in releasing P (from 13 to 30 ppm of P when increasing Lithothamnium rates). In the second experiment, it was concluded that Ca from Lithothamnium was the most efficient source for the initial chemical conditions in the furrow and that it provided significant increments in grain yield and P and Ca contents in the petiole of soybean plants. After these results, six field experiments showed significant increases in the efficiency of PUE in common bean, soybean, and corn crops (63% on average). Lithothamnium has become an indispensable technology to provide greater productive efficiency for crops. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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21. In vitro root growth of rice seedlings inoculated with rhizobacteria.
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Cabral Cruz, Dennis Ricardo, Lucas Ferreira, Izabely Vitória, da Costa Monteiro, Natasha Ohanny, Bueno Oliveira, Rafael, and Nascente, Adriano Stephan
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UPLAND rice ,AGRICULTURAL productivity ,ROOT development ,RICE ,ROOT growth - Abstract
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- 2024
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22. PRODUCTIVITY OF CORN AND BEANS AS AFFECTED BY SEASON AND SOURCE OF NITROGEN
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Pedro Marques Silveira, Adriano Stephan Nascente, and Maria da Conceição Santana Carvalho
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adubação antecipada ,fertilizante nitrogenado ,nitrogênio ,sistema plantio direto ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Os fertilizantes com eficiência aumentada, que proporcionam redução das perdas de nitrogênio (N), podem ser alternativas viáveis para proporcionar a antecipação da adubação de cobertura para a semeadura e reduzir operações para o produtor rural. O objetivo do trabalho foi determinar o efeito da época de aplicação de fertilizantes nitrogenados de eficiência aumentada nas produtividades de grãos do milho e feijão-comum na região do Cerrado no sistema plantio direto. O experimento foi desenvolvido durante duas safras agrícolas em condições de campo. O delineamento experimental foi em blocos completos casualizados, no esquema fatorial 2x4+1, com quatro repetições. Os tratamentos constaram da combinação de duas épocas de aplicação de nitrogênio (semeadura e convencional) com quatro tipos de fertilizantes nitrogenados (1. ureia + NBPT + Zeólita), 2. (ureia + B + Cu + Zeólita), 3. Super N e 4. Ureia). Adicionalmente foi incluído um tratamento controle (sem N). No milho, cultivado no verão, aplicou-se 150 kg ha-1 de N e no feijão-comum, cultivado no inverno, aplicou-se 90 kg ha-1 de N. Concluiu-se que as fontes nitrogenadas e a época de aplicação do nitrogênio não afetaram a produtividade de grãos da cultura do milho, os componentes de produção e a produtividade de grãos do feijão-comum. A aplicação de nitrogênio no milho ou no feijão-comum proporcionaram incrementos significativos na produtividade de grãos das culturas.
- Published
- 2022
23. ROOT AND SHOOT DEVELOPMENT OF CORN SEEDLINGS AS AFFECTED BY RHIZOBACTERIA
- Author
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Dennis Ricardo Cabral Cruz, Adriano Stephan Nascente, Mariana Aguiar Silva, and Juracy Barroso Neto
- Subjects
Zea mays L ,rizobactérias ,sustentabilidade ,raiz ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Multifunctional microorganisms are beneficial microorganisms able of promoting plant growth through direct and indirect mechanisms. Because of this, has enormous potential for use when aiming a sustainable agriculture. The objective of this work was to determine the effect of seed inoculation with multifunctional microorganisms on the initial development of corn seedlings. The experiment was carried out under controlled conditions in a completely randomized design, with seven treatments and six replications. Treatments consisted of microbiolization of corn seeds with the rhizobacteria: 1. Pseudomonas fluorescens (BRM 32111), 2. Burkholderia pyrrocinia (BRM 32113), 3. Serratia sp. (BRM 32114), 4. Bacillus sp. (BRM 63573), 5. Azospirillum brasilense (Ab-V5), 6. Azospirillum sp. (BRM 63574) and 7. control treatment (no microorganisms). For each experimental unit, 500 mL plastic pots filled with soil and two corn seeds were used. After 14 days the seedlings were removed from the pots, set aside from the ground and photographed with a digital camera. The images presented were analyzed by WinRHIZO 2012 software to determine: total root length, root diameter, total root surface area and root volume. After this, roots and shoots of the seedlings were dried and weighed. Corn seedlings treated with the multifunctional microorganisms Bacillus sp. (BRM 63573), Serratia sp. (BRM32114) and Azospirillum sp. (BRM 63574) presented increased in the root and shoots biomass compared to untreated seeds. The microorganism Azospirillum sp. (BRM 63574) was the one that provided the highest values in the parameters of total root length, root diameter, root volume, root dry mass, shoot dry mass and total dry mass compared to the control treatment. The use of multifunctional microorganisms is a promising alternative to provide greater development of corn seedlings.
- Published
- 2022
24. Microrganismos promotores de crescimento de plantas - Trichoderma e Azospirillum: otimizando a cultura do milho em sistemas integrados de produção agropecuária
- Author
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Fernandes, João Pedro Tavares, primary, Nascente, Adriano Stephan, additional, Carvalho, Paulo Cesar de Faccio, additional, Dominschek, Rubia, additional, Santos, Fenelon Lourenço de Sousa, additional, De Moraes, Anibal, additional, Bier, Vanderlei Artur, additional, and Silva, Diogo Castilho, additional
- Published
- 2024
- Full Text
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25. Interação de plântulas de soja com rizobactérias benéficas
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Frasca, Laylla Luanna de Mello, primary, Cristina Rezende, Cássia, additional, Silva, Mariana Aguiar, additional, Lanna, Anna Cristina, additional, Cruz, Dennis Ricardo Cabral, additional, and Nascente, Adriano Stephan, additional
- Published
- 2024
- Full Text
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26. UTILIZAÇÃO DE MICRORGANISMOS MULTIFUNCIONAIS NAS PRINCIPAIS CULTURAS DO CERRADO
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Frasca, Laylla Luanna de Mello, primary, Rezende, Cássia Cristina, additional, Silva, Mariana Aguiar, additional, Faria, Denner Robert, additional, Lanna, Anna Cristina, additional, Filippi, Marta Cristina Corsi de, additional, and Nascente, Adriano Stephan, additional
- Published
- 2021
- Full Text
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27. Bioestimulantes no crescimento vegetal e desempenho agronômico do feijão-comum de ciclo superprecoce
- Author
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Laylla Luanna de Mello Frasca, Adriano Stephan Nascente, Anna Cristina Lanna, Maria Conceição Santana Carvalho, and Guilherme Gonçalves Costa
- Subjects
phaseolus vulgaris. promotores de crescimento. produtividade. ,Agriculture - Abstract
O feijão-comum é uma das principais culturas produzidas e consumidas no Brasil, apresenta grande valor econômico e social para a população. Bioestimulante são substancias sintéticas ou naturais aplicadas em sementes, superfície foliar e solo visando proporcionar melhor desenvolvimento das plantas. Entretanto, os seus efeitos ainda são questionáveis. O objetivo do trabalho foi determinar o efeito do uso de bioestimulantes nas trocas gasosas, nos teores de nutrientes foliares e dos grãos, produção de matéria seca, componentes de produção e produtividade do feijoeiro de ciclo superprecoce. O experimento foi conduzido no período de verão na região dos Cerrados. O delineamento experimental utilizado foi de blocos casualizados, com 12 tratamentos e 4 repetições. Os tratamentos foram compostos pelos seguintes bioestimulantes: (I) Cinetina + ácidos; (II) Leonardita; (III) Micro + ácidos fúlvicos, (IV) Micro + aminoácidos; (V) Micro + Ascophyllum; (VI) Micro + Eklonya; (VII) N + ácidos; (VIII) N + K + aminoácidos; (IX) Trichoderma , (X) Trichoderma asperellum + Bacillus methylotrophicus, (XI) Turfa e (XII) Controle. Os dados foram submetidos à análise de variância e ao teste de LSD e ao teste de Dunnet a 5%, para comparação dos tratamentos ao controle. O uso de bioestimulantes não promoveu acréscimo significativo nas trocas gasosas, largura foliar, número de grãos por vagem, massa de 100 grãos e produtividade. Apresentou resultados positivos no acúmulo de matéria seca total, das hastes, folhas e vagens com o uso de Micro + Ac. Fúlvicos e acarretou maior número de vagens por planta pela aplicação de Micro + Ascophyllum.
- Published
- 2020
- Full Text
- View/download PDF
28. Clearfield upland rice intercropped with Urochloa ruziziensisfor grain, increased revenue and environmental preservation
- Author
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Sousa Santos, Fenelon Lourenço, Nascente, Adriano Stephan, Lacerda, Mabio Chisley, and Calil, Francine Neves
- Abstract
Intercropping perennial forage grasses into cereal crops is an alternative to recover degraded pastures. However, the intercrop of forage grasses, such as Urochloa ruziziensis(R. Germ. and C. M. Evard) Crins (Congo grass), can lead to losses in cereal yield. Therefore, it is necessary to develop management strategies that allow forage grass establishment without major losses in cereal yield in intercropping. The objective was to study the agronomic and economic impacts of intercropping U. ruziziensisinto a Clearfield upland rice (Oryza sativaL.) cultivar in the state of Goiás, Brazil, in two growing seasons. Treatments included forage grass seeds sowing method (broadcast or incorporation to the soil) and sowing times (at rice sowing, 20 days after emergence [DAE], and 45 DAE of rice). Also, imazapyr + imazapic herbicide was applied to restrict the competitive effect on rice yield. Monocropping control plots were also evaluated. Grain yield was measured on rice. Forage grass dry matter yield was measured at 30, 60, and 90 days after harvesting (DAH) of rice. Crude protein content was analyzed at 90 DAH. Profitability was calculated for each cropping system relative to rice monocropping. Intercropping of rice and U. ruziziensissowed at 45 DAE provided the highest grain yield relative to other assessed intercropping treatments as well as rice monocropping. Concurrent sowing of rice and incorporated U. ruziziensisseeding provided the greatest economic return. This reformed cropping system improved land and pasture output, which can reduce the pressure to convert more land to agricultural use. The use of herbicide‐resistant rice makes intercropping with forage plants feasible for pasture renewal.Intercropping management with imazapyr + imazapic does not affect rice yield.Intercropping rice with Urochloa ruziziensisincreases land use capacity.The intercropping of rice and U. ruziziensisreduces the environmental and social pressure to deforest new areas. The use of herbicide‐resistant rice makes intercropping with forage plants feasible for pasture renewal. Intercropping management with imazapyr + imazapic does not affect rice yield. Intercropping rice with Urochloa ruziziensisincreases land use capacity. The intercropping of rice and U. ruziziensisreduces the environmental and social pressure to deforest new areas.
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- 2024
- Full Text
- View/download PDF
29. Application of herbicides on parental lines (A clearfield and R) of hybrid rice at post-flowering stage for production
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Vaz Mondo, Vitor Henrique and Nascente, Adriano Stephan
- Published
- 2019
30. BACTÉRIAS PROMOTORAS DO CRESCIMENTO RADICULAR EM PLÂNTULAS DE DOIS CULTIVARES DE ARROZ IRRIGADO POR INUNDAÇÃO
- Author
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Israel Mendes Sousa, Adriano Stephan Nascente, and Marta Cristina Corsi de Filippi
- Subjects
bioagentes ,desenvolvimento sustentável ,microrganismos indutores de crescimento ,oryza sativa ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Para o crescimento e desenvolvimento as plantas, na natureza, contam com os benefícios de microrganismos residentes em sua rizosfera. Rizobactérias promotoras de crescimento vegetal (RPCV) são exemplos desses microrganismos que interagem de forma benéfica com espécies vegetais. Portanto, a inoculação de sementes com RPCV pode representar uma alternativa importante e sustentável para melhorar o desenvolvimento inicial e a produção de plantas cultivadas. Objetivou-se com esse estudo determinar o efeito da microbiolização de sementes com RPCV no comprimento radicular de plântulas de arroz irrigado. Em condições controladas, conduziram-se dois experimentos com cultivares de arroz irrigado (BRS Catiana e A 702 CL), em delineamento inteiramente casualizado, com sete tratamentos e 10 repetições. Os tratamentos constituíram-se de seis microrganismos: BRM32109 (Bacillus sp.), BRM32110 (Bacillus sp.), BRM32111 (Pseudomonas sp.), BRM32112 (Pseudomonas fluorescens), BRM32113 (Burkholderia pyrrocinia), BRM32114 (Serratia sp.) e um controle (sem microrganismo). Os dados foram submetidos à análise de variância, as médias entre os tratamentos com RPCV foram comparadas pelo teste LSD (p≤0,05) e, os tratamentos com microrganismos foram comparados individualmente com o controle pelo teste de Dunnett (p≤0,05). Somente a cultivar BRS Catiana apresentou diferença entre os tratamentos. Os maiores comprimentos radiculares foram apresentados pelas sementes tratadas com os isolados BRM32110, BRM32112, BRM32109 e BRM32114. Para ambas cultivares houve significância quando comparado microrganismos e controle. Destaque para as sementes da cultivar BRS Catiana, que quando tratadas com os isolados BRM32110 e BRM32112 apresentaram aumento médio de 25,7% no comprimento radicular, em comparação com o tratamento controle. Para a cultivar A 702 CL, todos os microrganismos proporcionaram incrementos com um valor médio de 31% no comprimento radicular das plântulas de arroz. Com base nos resultados pode-se inferir que as RPCV proporcionam incrementos significativos no comprimento radicular de plântulas de cultivares de arroz irrigado.
- Published
- 2019
31. CARACTERÍSTICAS FISIO-AGRONÔMICAS DO FEIJOEIRO SUPERPRECOCE AFETADO POR BIOESTIMULANTES
- Author
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Laylla Luanna De Mello Frasca, Adriano Stephan Nascente, Anna Cristina Lanna, and Maria da Conceição Santana Carvalho
- Subjects
Agriculture ,Agriculture (General) ,S1-972 - Abstract
O feijão-comum apresenta grande importância econômica e social para a população brasileira. Dentre as tecnologias contributivas para alta produtividade das culturas estão os bioestimulantes. Objetivou-se determinar o efeito de bioestimulantes, aplicados via semente e/ou folha, sobre o crescimento e desenvolvimento de plantas de feijoeirode ciclo superprecoce, cultivar FC-104, quanto aos indicadores de qualidade fisiológica (trocas gasosas, conteúdo de nutrientes em folhas e grãos, biomassa da matéria seca de parte aérea) e agronômica (produtividade e componentes de produção). O experimento foi conduzido no período de inverno (junho-agosto 2017) na região dos Cerrados. O delineamento experimental utilizado foi de blocos casualizados, com 13 tratamentos e 4 repetições. Os tratamentos foram constituídos pelos promotores de crescimento (I) Reguladores de crescimento; (II) Complexo de micronutrientes, (III) Leonardita; (IV) Micro + ácidos fúlvicos, (V) Micro + aminoácidos; (VI) Micro + Ascophyllus; (VII) Micro + Eklonya; (VIII) N + Zn; (IX) N + K + aminoácidos; (X) Trichoderma , (XI) T. asperellum + Bacillus methylotrophicus, (XII) Turfa e (XIII) Controle. Nos tratamentos IV e XI, plantas de feijoeiro comum apresentaram valores de condutância estomática, biomassa da matéria seca de parte aérea e número de vagens por planta, significativamente, superiores em relação ao controle (sem bioestimulante). No entanto, não houve aumento significativo no rendimento de grãos do feijoeiro comum tratado com bioestimulantes.
- Published
- 2019
32. Trichoderma asperellum AND RHIZOBACTERIA AS AFFECTING BIOMASS ACCUMULATION AND GAS EXCHANGE OF LOWLAND RICE
- Author
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Israel Mendes Sousa, Adriano Stephan Nascente, Marta Cristina Corsi de Filippi, and Anna Cristina Lanna
- Subjects
microorganisms associated with rice ,Oryza sativa ,plant growth promoting rhizobacteria ,sustainable development. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
Rice is a staple food for almost four billion people worldwide. Rice plants treated with multifunctional microorganisms may be a strategic way for sustainable improvement of crop grain yield. This work had the objective to study the effect of types and ways of microorganisms application in tropical lowland rice production, evaluated by biomass production and gas exchange. The greenhouse trial was in a completely randomized design, in factorial scheme 7 x 3 + 1, with four replication. Treatments were the combination of seven microorganisms: Bacillus sp. (BRM32109 e BRM32110); Pseudomonas fluorescens (BRM32111); Pseudomonas sp. (BRM32112); Burkholderia pyrrocinia (BRM32113); Serratia sp. (BRM32114) and Trichoderma asperellum pool (UFRA.T06 + UFRA.T09 + UFRA.T12 + UFRA.T52), with three application ways (1. microbiolized seed; 2. microbiolized seed + soil drenched with microorganism at eight and 15 days after sowing (DAS) and 3. microbiolized seed + microorganism spray plant at eight and 15 DAS). Microbiolized seed was the best microorganism way, which allowed highest instantaneous carboxylation efficiency and, biomass production in lowland rice. Rhizobcteria BRM32114, followed by BRM32111, BRM32112 and fungi T. asperellum allowed, an average, improvement of 17% in instantaneous carboxylation efficiency and 20% in dry shoot biomass production of lowland rice compared to the control plants.
- Published
- 2021
33. Physiological and agronomic characteristics of the common bean as affected by multifunctional microorganisms
- Author
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Cássia Cristina Rezende, Laylla Luanna de Mello Frasca, Mariana Aguiar Silva, Rafael Augusto Corrêa Pires, Anna Cristina Lanna, Marta Cristina Corsi de Filippi, and Adriano Stephan Nascente
- Subjects
Coinoculation ,Fungus ,Grain yield ,Phaseolus vulgaris ,Rhizobacteria. ,Agriculture (General) ,S1-972 - Abstract
Multifunctional microorganisms (MMs) can have beneficial effects on plants through direct and indirect mechanisms. This study aimed to determine the effect of MMs on shoot and root biomass production; gas exchange; content of macronutrients in the shoots, roots and grains; yield components; and grain yield of common bean plants. A completely randomized design with twenty-six treatments and three replications was used under controlled conditions. Treatments consisted of the application of MMs and their combinations in pairs, with the nine rhizobacteria isolates BRM 32109, BRM 32110 and 1301 (Bacillus sp.), BRM 32111 and BRM 32112 (Pseudomonas sp.), BRM 32113 (Burkholderia sp.), BRM 32114 (Serratia sp.), 1381 (Azospirillum sp.) and Ab-V5 (Azospirillum brasilense); an edaphic fungal isolate T-26 (Trichoderma koningiopsis); and a control (without MMs). These MMs were applied at three time points: microbiolization of the seeds, watering the soil seven days after sowing (DAS) and spraying the plants with 21 DAS. In comparison to the control plants, the isolates 1301 and T-26, in addition to the combinations Ab-V5 + T-26, BRM 32114 + BRM 32110 and 1381 + T-26, provided better results, with an increase of 36.5% in the grain yield, a higher accumulation of biomass (78.0%) and a higher content of N, P and K (42.6, 67.8 and 25.7%, respectively) in the shoots of common bean plants. Therefore, the results allow us to infer that the use of MMs is a good strategy for increasing common bean grain yields.
- Published
- 2021
- Full Text
- View/download PDF
34. Desempenho de plântulas de arroz de terras altas promovido por microrganismos multifuncionais
- Author
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João Pedro Tavares Fernandes, Adriano Stephan Nascente, Marta Cristina Corsi de Filippi, and Mariana Aguiar Silva
- Subjects
Oryza sativa ,Rizobactérias ,Desenvolvimento radicular ,Sustentabilidade. ,Agriculture (General) ,S1-972 - Abstract
Microrganismos multifuncionais podem contribuir para o desenvolvimento do sistema radicular de plantas afetando positivamente a produtividade de grãos das culturas. Objetivou-se determinar o efeito da inoculação de rizobactérias em sementes no desenvolvimento radicular de plântulas do arroz de terras altas. O experimento foi conduzido no laboratório de microbiologia agrícola da Embrapa Arroz e Feijão, e adotando delineamento experimental inteiramente casualizado, com oito repetições. Os tratamentos consistiram da inoculação em sementes de arroz com as rizobactérias 1. Pseudomonas fluorescens (BRM 32111), 2. Burkholderia pyrrocinia (BRM 32113), 3. Serratia sp. (BRM 32114), 4. Bacillus sp. (1301), 5. Azospirillum brasilense (Ab-V5), 6. Azospirillum sp. (1381), e 7. tratamento controle (sem microrganismo). O tratamento com a utilização do microrganismo Azospirillum sp. (1381) proporcionou maior comprimento radicular, volume de raízes e massa seca total de raízes, sendo respectivamente, 86,34, 111,53 e 29,41%, superior ao tratamento controle e diferiu significativamente. Além disso, os tratamentos Ab-V5 e Bacillus sp. (1301) proporcionaram maior diâmetro radicular nas plantas de arroz, sendo 13,81 e 13,06 % respectivamente superior ao tratamento controle. O uso destes microrganismos multifuncionais foi eficiente em sua capacidade de proporcionar incrementos no desenvolvimento radicular de plântulas de arroz.
- Published
- 2021
- Full Text
- View/download PDF
35. Yield of upland rice as affected by nitrogen application and seed inoculation with diazotrophic bacteria
- Author
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Nascente, Adriano Stephan and da Conceicao Santana Carvalho, Maria
- Published
- 2018
36. N Fertilizer Dose-Dependent Efficiency of Serratia spp. for Improving Growth and Yield of Upland Rice (Oryza sativa L.)
- Author
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Nascente, Adriano Stephan, Lanna, Anna Cristina, de Sousa, Thatyane Pereira, Chaibub, Amanda Abdallah, de Souza, Alan Carlos Alves, and de Filippi, Marta Cristina Corsi
- Published
- 2019
- Full Text
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37. Response of the common bean to liquid fertilizer and Rhizobium tropici inoculation
- Author
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José Geraldo da Silva, Enderson Petrônio de Brito Ferreira, Virgínia Damin, and Adriano Stephan Nascente
- Subjects
Application depth ,Cerrado ,Phaseolus vulgaris ,Rhizobia. ,Agriculture (General) ,S1-972 - Abstract
The common bean production system is majorly based on the use of granular fertilizers to provide nutrients for the crop. Studies on the use of liquid fertilization at an appropriated depth and, seed inoculation with Rhizobium tropici can provide significant increases in the grain yield of the common bean. The objective of this study was to determine the growth and productivity of common bean as affected by N-P formulations, application depths and the inoculation with R. tropici. Field experiments were carried out in 2015 and 2016 cropping years using a complete block design, in a 2x2x2 factorial arrangement, with four replicates. The treatments involved the combination of N-P formulation (granular and liquid), two application depths of the N-P formulation (6 and 12 cm) and with or without rhizobia inoculant. The plant density (PD), number of pods (NP), number of grains (NG), mass of 100 grains (M100) and grain yield (GY) were determined. The granular and liquid N-P formulations provided similar results for PD, NP, NG, and GY of common bean. Similarly, the application depth of the N-P formulations did not affect GY. Inoculation of the seed with R. tropici stimulated NP and NG, increasing GY. Growth and productivity parameters were equally affected by the type of formulation and application depth; however, GY was greater with rhizobial inoculant. Thus, the liquid N-P formulation, applied at 6 cm depth, associated with rhizobial inoculant can improve the crop management providing better control of application uniformity, minimal soil mobilization, less fuel consumption, and increased grain yield.
- Published
- 2020
- Full Text
- View/download PDF
38. Screening of Beneficial Microorganisms to Improve Soybean Growth and Yield
- Author
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Mariana Aguiar Silva, Adriano Stephan Nascente, Marta Cristina Corsi de Filippi, Anna Cristina Lanna, Gisele Barata da Silva, João Pedro Tavares Fernandes, and Marina Teixeira Arriel Elias
- Subjects
glycine max ,bioagent ,growth promotion ,nutrient uptake ,gas exchange ,grain yield ,Biotechnology ,TP248.13-248.65 - Abstract
Abstract The objective of this research was to identify the best microorganisms, alone or in mixture for total biomass gain (root + shoot), positive change in gas exchange, nutrient uptake (root, shoot and grain) and yield and yield components in the soybean crop. Trial under greenhouse conditions had the experimental design in a completely randomized scheme with 26 treatments and four replicates. The treatments consisted of the rhizobacteria BRM 32109, BRM 32110 and 1301 (Bacillus sp.), BRM 32111 and BRM 32112 (Pseudomonas sp.), BRM 32113 (Burkholderia sp.), BRM 32114 (Serratia sp.), Ab-V5 (Azospirillum brasilense) and 1381 (Azospirillum sp.), and the fungus Trichoderma asperellum (a mix of the isolates UFRA.T06, UFRA.T09, UFRA.T12 and UFRA.T52). Besides, the same isolates were combined in pairs, completing 16 combinations. Control treatments received no microorganism. Microorganisms applied isolated or in combination, provided biomass gain, positive gas exchange, increases in nutrients uptake at the shoot and grain, and improved grain yield and its components than control plants. Stood out the combination Ab-V5 + T. asperellum pool, which provided a 25% improvement in grain yield.
- Published
- 2020
- Full Text
- View/download PDF
39. Cover Crops as Affecting Soil Chemical and Physical Properties and Development of Upland Rice and Soybean Cultivated in Rotation
- Author
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Adriano Stephan Nascente and Luis Fernando Stone
- Subjects
Plant culture ,SB1-1110 - Abstract
Cover crops can provide changes in soil chemical and physical properties, which could allow a sustainable development of soybean and upland rice rotation in Brazilian Cerrado. The objective of this study was to determine the effects of cover crops (cultivated in the offseason) in the soybean-upland rice rotation (cultivated in the summer season) on the soil chemical and physical properties, yield components and grain yield of the cash crops. The experimental design was a randomized block design in factorial scheme 4 × 2 with six replications. Treatments were composed by four cover crops: fallow, millet (Pennisetum glaucum) + Crotalaria ochroleuca, millet + pigeon pea (Cajanus cajans), and millet + pigeon pea + Urochola ruziziensis in the offseason with one or two cycles of cover crops, with rice (Oryza sativa) or soybean (Glycine max) in the summer season. Cover crops alone provided no changes in soil chemical properties. However, the rotation cover crops/cash crops/cover crops/cash crops reduced pH, Al and H + Al and increased Ca, Mg, K and Fe contents in the soil. The cover crops millet + pigeon pea and millet + pigeon pea + U. ruziziensis improved soil physical properties in relation to fallow, especially in the 0–0.10 m soil layer. In spite of the improvement of the soil physical properties after two years of rotation with cover crops and cash crops, the soil physical quality was still below the recommended level, showing values of macroporosity, S index and soil aeration capacity lower than 0.10 m3/m3, 0.035 and 0.34, respectively. Upland rice production was higher under mixtures of cover crops than under fallow, mainly because of soil physical changes done by these mixtures of cover crops. Soybean grain yield was similar under all cover crops tested, but was higher after the rotation cover crops/upland rice/cover crops than after only one cycle of cover crops. Keywords: crop rotation, no-tillage system, sustainable agriculture, tropical agriculture, rice, soybean
- Published
- 2018
- Full Text
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40. Growth and nutrient contents in lowland rice due to phosphorus and potassium fertilization
- Author
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André Fróes de Borja Reis, Adriano Stephan Nascente, Rodrigo Estevam Munhoz de Almeida, and Aloísio Freitas Chagas Júnior
- Subjects
Oryza sativa ,irrigated rice ,tropical soil ,Agriculture (General) ,S1-972 - Abstract
In order to reach an optimum and sustainable production, growers must know the fertilizing potassium (K) and phosphorous (P) application rates. The present study aimed to determine the rice development in response to combined rates of P and K, on Plinthaquults (380-400 g kg-1 of clay), under high and low fertility conditions, in the tropical lowland plain of the Araguaia river, Brazil. Three field experiments were performed, each one consisting of a completely randomized factorial block design, with three replications. Treatments included a combination of six K2O rates (0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 90 kg ha-1, 120 kg ha-1 and 150 kg ha-1) with six P2O5 rates (0 kg ha-1, 30 kg ha-1, 60 kg ha-1, 90 kg ha-1, 120 kg ha-1 and 150 kg ha-1). No interaction effect between P and K rates was observed for the evaluated variables in any fertility level/year. Phosphorous application under low fertility conditions, as well as K under high fertility conditions, affect overall crop nutrition, tillering capacity, yield components and grain yield of lowland rice, though no effects were observed due to the P application in high fertility soils and K in low fertility soils. Under high fertility conditions, the grain yield increment rate due to the K application was 4.04 kg ha-1, whereas in the low fertility areas, such as recently cleared fields, a maximum yield of 7,161 kg ha-1 was achieved by applying 140 kg ha-1 of P.
- Published
- 2018
- Full Text
- View/download PDF
41. Produtividade do feijão-comum afetado por população de plantas
- Author
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Vitor Henrique Vaz Mondo and Adriano Stephan Nascente
- Subjects
BRS Estilo, densidade de semeadura, feijoeiro-comum, Phaseolus vulgaris. ,Agriculture - Abstract
A população de plantas afeta diretamente a incidência de doenças e plantas daninhas, colheita, acamamento, aproveitamento de água e fertilizantes e gastos com sementes da maioria das culturas agrícolas. Além disso, é importante se determinar a população ideal de plantas por área das novas cultivares de feijão-comum visando obter o máximo potencial produtivo de cada material genético. O objetivo desse trabalho foi de determinar os efeitos de população de plantas nos componentes de produção e produtividade de grãos da cultivar de feijão-comum BRS Estilo. O delineamento experimental foi em blocos ao acaso com cinco tratamentos e seis repetições. Os tratamentos foram compostos pelo número de sementes por metro de BRS Estilo (4, 8, 12, 16 e 20 sementes m-1). O aumento da população de plantas proporcionou redução na massa de matéria seca, número de vagens por planta, número de grãos por vagem, massa de 100 grãos e produtividade de grãos do feijão-comum cultivar BRS Estilo.
- Published
- 2018
- Full Text
- View/download PDF
42. VOLATILIZAÇÃO DA AMÔNIA DA UREIA ESTABILIZADA COM NBPT NA ADUBAÇÃO EM COBERTURA DA Urochloa ruziziensis
- Author
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João Eudes Santana Lima, Adriano Stephan Nascente, Pedro Marques da Silveira, and Wilson Mozena Leandro
- Subjects
cerrado ,forragem ,adubação nitrogenada ,perdas de nitrogênio ,inibidor de urease. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
A ureia é o principal adubo nitrogenado utilizado em pastagens. Nesse fertilizante, uma das principais perdas de nitrogênio (N) está relacionada com a volatilização da amônia. O uso de produtos que proporcionam redução das perdas de N da ureia pode contribuir para aumentar a eficiência de uso desse nutriente em pastagens. Assim, objetivou-se determinar o efeito de fontes e doses de N aplicado parcelado em cobertura na Urochloa ruziziensis, nas perdas de N pela volatilização de amônia (N-NH3). O experimento foi conduzido em Santo Antônio de Goiás, GO, em Latossolo Vermelho Distrófico. Utilizou o delineamento experimental de blocos ao acaso, com quatro repetições em arranjo fatorial 2 x 5 x 5. Os tratamentos foram compostos pelas fontes de N: ureia comum e ureia com inibidor de urease, doses de N: 0, 50, 100, 200 e 300 kg ha-1 (parceladas em 5 aplicações) e cinco períodos de crescimento da forrageira: 14/11 a 13/12 (1º período), 14/12 a 12/01 (2º período), 13/01 a 11/02 (3º período), 24/03 a 22/04 (4º período), e 10/07 a 08/08 (5º período). O uso de ureia com inibidor de urease proporcionou reduções nas perdas de amônia por volatilização em relação à ureia comum. O aumento das doses de N proporcionou aumento da volatilização de N-NH3. Ocorreram maiores perdas de N pela volatilização da amônia nos períodos mais secos do ano.
- Published
- 2018
43. YIELD, BIOMASS PRODUCTION AND NUTRIENTS ACCUMULATION OF SUPER EARLY GENOTYPE OF COMMON BEAN
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Adriano Stephan Nascente and Maria da Conceição Santana Carvalho
- Subjects
phaseolus vulgaris ,growth analysis ,nutrient content ,nutrient uptake ,brazilian cerrado ,sustainable agriculture. ,Agriculture ,Agriculture (General) ,S1-972 - Abstract
This work aimed to study the biomass production and nutrient uptake during plant development and nutrients exported by the grains of a super early genotype (SEG) of common bean. The irrigated field experiment was done during the 2016 growing season (winter season), under no-tillage system conditions, in the Cerrado region. Experimental design was in complete randomized block in split plots scheme, with four replications. Main plots comprised SEG of common bean (Colibri – check cultivar and CNFC 15874) and subplots were nine times of plant collection (14, 21, 28, 35, 42, 49, 56, 63 and 70 days after plant sowing, DAS) with separation in leaves, stem and pods. Absorption of nutrients by the shoots of SEG CNFC 15874 follows the decreasing order N> K> Ca> Mg> P> S> Fe> Zn >Mn >Cu. The maximum accumulation of nutrients in the leaves and stem of the SEG was at 42 DAS (full flowering stage) and in the pods between 63 to 70 DAS (physiological maturation). Nitrogen, K, P, Ca, S, Fe, Zn, Mn and Cu was the order of accumulated nutrients in grains of super early genotypes. Nitrogen, P and Cu was the nutrients with higher amount in the grains of SEG. IPR Colibri had higher number of pods, mass of grains, total and pods biomass production, nutrients accumulation and grain yield than CNFC 15874. Nutrients should be available to SEG of common bean between 14-21 DAS (third trifoliolate leaf).
- Published
- 2018
44. Compactação sobre o sulco de plantio e tratamento de sementes na produtividade do arroz de terras altas
- Author
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Veneraldo Pinheiro, Adriano Stephan Nascente, and Luis Fernando Stone
- Subjects
Oryza sativa, plantio direto, palhada de braquiária, pressão de compactação. ,Agriculture - Abstract
Este trabalho objetivou determinar o efeito da compactação sobre o sulco de plantio e do tratamento de sementes na produtividade do arroz de terras altas cultivado sob sistema plantio direto (SPD). Foram conduzidos quatro experimentos, o primeiro e o terceiro em área de pastagem de Urochloa brizantha, o segundo em área de soja e o quarto em área de pastagem de Urochloa decumbens. No primeiro e no segundo foram comparadas três pressões de compactação sobre o sulco de plantio, no delineamento de blocos ao acaso, com seis repetições. No terceiro e no quarto foram comparados três pressões de compactação sobre o sulco de plantio e dois tratamentos de sementes, em blocos ao acaso, esquema fatorial, comseis repetições no terceiro e 12 no quarto experimento. No primeiro experimento, as pressões de compactação foram 25 kPa, 42 kPa e 228 kPa e, nos outros três, a pressão de 228 kPa foi substituída pela de 340 kPa. Os tratamentos de sementes foram: T0 - sem tratamento e T1 - fipronil + piraclostrobina + tiofanato metílico. A compactação sobre o sulco de plantio aumentou de forma linear a produtividade do arroz. O tratamento de sementes resultou em maiores produtividades do arroz cultivado no SPD sobre palhada de braquiária.
- Published
- 2018
- Full Text
- View/download PDF
45. Beneficial microorganisms as affecting root development of upland rice
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Adriano, Stephan Nascente, primary, Ishola, Zainab Temitope, additional, Marta, Cristina Corsi de Filippi, additional, and Dennis, Ricardo Cabral Cruz, additional
- Published
- 2023
- Full Text
- View/download PDF
46. BIOAGENTS AND MIX OF COVER PLANTS AFFECTING SOYBEAN
- Author
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Frasca, Laylla Luanna de Mello, primary, Rezende, Cássia Cristina, additional, Silva, Mariana Aguiar, additional, Lanna, Anna Cristina, additional, Filippi, Marta Cristina Corsi, additional, and Nascente, Adriano Stephan, additional
- Published
- 2023
- Full Text
- View/download PDF
47. Upland rice grain yield and plant improvement by single and combined beneficial microorganisms
- Author
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Nascente, Adriano Stephan, primary, Temitope, Ishola Zainab, additional, Filippi, Marta Cristina Corsi, additional, and Cruz, Dennis Ricardo Cabral, additional
- Published
- 2023
- Full Text
- View/download PDF
48. Épocas de semeadura afetando índices morfofisiológicos de cultivares de arroz de terras altas
- Author
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José Antônio de Paula Oliveira, Adriano Stephan Nascente, and Luis Fernando Stone
- Subjects
Oryza sativa ,Ecofisiologia ,Graus-dia ,Estádio de desenvolvimento ,Agriculture ,Agriculture (General) ,S1-972 ,Environmental sciences ,GE1-350 - Abstract
A manifestação do potencial produtivo das culturas depende de fatores genéticos e de condições favoráveis de ambiente e de manejo. Objetivou-se determinar os efeitos das épocas de semeadura na eficiência do uso da radiação solar, nos índices morfofisiológicos e na produtividade de grãos de cultivares contrastantes de arroz de terras altas. O experimento de campo foi conduzido na região central do Brasil em solo sob Cerrado. O delineamento experimental foi em blocos ao acaso no esquema fatorial 3 x 5, com oito repetições. Os tratamentos foram compostos pela combinação de três cultivares (BRS Primavera, BRSMG Curinga e Douradão) com cinco datas de semeadura (11/09/2012, 22/10/2012, 28/11/2012, 21/12/2012 e 27/2/2013). Todas as cultivares requereram menos graus-dia acumulados para atingir a fase reprodutiva quanto mais tardia foi a data de semeadura. Os menores acúmulos de biomassa e índices de área foliar das três cultivares ocorreram na data de semeadura mais precoce, o que pode ter sido resultado de menor eficiência do uso da radiação (EUR) nesse período. A partição de assimilados para as folhas e colmos foi semelhante entre as cultivares, contudo a taxa de assimilação/translocação de carboidratos para as panículas foi maior para as cultivares BRSMG Curinga e Douradão. As cultivares diferiram quanto ao número total de grãos por área, tendo a cultivar Douradão apresentado o maior número e a BRS Primavera o menor. As maiores produtividades foram obtidas nas datas de semeadura que abrangeram o período tradicional de semeadura do arroz de terras altas, outubro a dezembro.
- Published
- 2017
- Full Text
- View/download PDF
49. Doses e épocas de aplicação foliar de N afetando a produtividade de grãos do feijoeiro comum
- Author
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Adriano Stephan Nascente, Vitor Henrique Vaz Mondo, Augusto César Oliveira Gonzaga, Maria da Conceição Santana Carvalho, and Mábio Crhisley Lacerda
- Subjects
Phaseolus vulgaris, adubação foliar, Cerrado, sistema plantio direto. ,Agriculture - Abstract
A aplicação foliar do nitrogênio na cultura do feijoeiro comum vem se tornando prática comum dentre os produtores rurais mais tecnificados. Entretanto essa aplicação nem sempre conduz a um diferencial de produtividade na cultura. Assim, o objetivo do trabalho foi de determinar o efeito de doses e épocas de aplicação de nitrogênio via foliar na produtividade de grãos de duas cultivares de feijoeiro comum. O experimento de campo foi conduzido na safra agrícola 2013 no município de Santo Antônio de Goiás em solo sob Cerrado no período de inverno (maio-agosto). O delineamento experimental foi em blocos ao acaso no esquema fatorial 5 x 4, com quatro repetições. Os tratamentos constaram da combinação de cinco doses de nitrogênio (0; 0,4; 0,8; 0,12 e 0,16 kg de ureia ha-1) aplicados via foliar com quatro estádios de desenvolvimento fenológico da cultura (R5, R6, R7 e R8). As cultivares estudadas forma BRS Ametista e BRS Notável. A aplicação de doses crescentes de nitrogênio aplicados via foliar não afetou os componentes de produção, produtividade e teor de nutrientes nos grãos das cultivares de feijoeiro comum BRS Ametista e BRS Notável. A época de aplicação do nitrogênio via foliar não proporcionou alterações significativas nos componentes de produção, produtividade e teor de nutrientes nos grãos do feijoeiro comum BRS Ametista e BRS Notável.
- Published
- 2017
- Full Text
- View/download PDF
50. Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname
- Author
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Adriano Stephan NASCENTE and Ruby KROMOCARDI
- Subjects
Oryza sativa L. ,rice varieties ,nitrogen ,phosphorus ,potassium ,Science (General) ,Q1-390 - Abstract
ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.
- Published
- 2017
- Full Text
- View/download PDF
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