30 results on '"Nunes Nesi, Cristiano"'
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2. Macrospora leaf spot development conditions and resistance/tolerance of Brazilian commercially grown maize genotypes.
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Wordell Filho, João Américo, Dal Bosco Ducatti, Rafael, and Nunes Nesi, Cristiano
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LEAF spots ,LEAF development ,CORN breeding ,NATURAL immunity ,GENOTYPES ,CORN - Abstract
Macrospora leaf spot (MLS), caused by the fungus Stenocarpella macrospora, is one of the most important diseases affecting maize in Brazil. However, there are no MLS-resistant cultivars commercially available. Therefore, this study aimed to investigate the lesion expansion rate of MLS in four maize genotypes, leaf wetness duration (0-, 6-, 12-, 18-, 24-, 30-, 36-, 42-, and 54-hour post-inoculation), disease development severity in three maize genotypes, and resistance/tolerance levels to MLS in 141 maize genotypes commercially grown in Brazil. The estimates were performed using logistic models adjusted to the parameters analyzed, except for resistance/tolerance levels, which were analyzed using proposed severity and resistance scales. The experiment was carried out at the Laboratory of Plant Phytopathology of the Epagri/Cepaf, Santa Catarina State, Brazil, from 2016 to 2020. Disease resistance was significantly different among genotypes and fungal isolates. However, none of the genotypes showed resistance or high tolerance levels to MLS. Leaf wetness duration influenced maximum disease severity, and lesion expansion rate differed significantly among the genotypes tested. All information generated in this study is essential for breeding programs of maize for MLS resistance. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Giberela e Desoxinivalenol: Qual a relação e como fungicidas podem ajudar?
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Wordell Filho, João Américo, Dal Bosco Ducatti, Rafael, and Nunes Nesi, Cristiano
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Fusarium graminearum ,Micotoxinas ,Wheat ,Trigo ,Mycotoxins ,DON - Abstract
Fusarium Head Blight (FHB) disease, caused mainly by Fusarium gramineraum, is one of the most common in wheat. Besides causing yield reductions, it is also associated with the accumulation of mycotoxins in the kernels, especially deoxynivalenol (DON). This work was carried out in two harvest seasons and aimed at using different sowing dates, cultivars and fungicide applications to help in the increase of yield and kernel quality (decrease of DON contamination). The work was developed under a randomized block design. Weak correlations between FHB incidence, incidence of Fusarium in the kernels and DON were observed. Fungicides helped in the increase of yields and in the achievement of better hectoliter weight and weight of a thousand kernels, mainly in 2019 (more humid year). Fungicides are excellent tools to help achieving higher yields, however, its use must be carried out with caution not to favor mycotoxin biosynthesis and accumulation. A Giberela, causada principalmente por Fusarium graminearum, é uma das doenças mais comuns em trigo. Além de causar reduções na produtividade da cultura, também é responsável pelo acúmulo de micotoxinas, especialmente a desoxinivalenol (DON), em grãos de trigo. Esse trabalho foi desenvolvido durante dois anos agrícolas buscando avaliar a utilização de diferentes cultivares, diferentes datas de plantio e diferentes manejos com fungicidas para aumentar a produtividade e a qualidade dos grãos (menor incidência de DON). O trabalho foi conduzido sob esquema de blocos casualizados. Fracas correlações entre a incidência de giberela, incidência de Fusarium nas sementes e DON foram observadas. O uso de fungicidas ajudou a aumentar a produtividade, o peso hectolitro e o peso de mil sementes do trigo, principalmente em 2019 (ano mais úmido). Os fungicidas são excelentes ferramentas para ajudar produtores a alcançar maiores produtividades, entretanto, seu uso deve ser realizado com cautela para não favorecer a biossíntese e acúmulo de micotoxinas em grãos de trigo.
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- 2022
4. Giberela e Desoxinivalenol: Qual a relação e como fungicidas podem ajudar?
- Author
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Américo Wordell Filho, João, primary, Dal Bosco Ducatti, Rafael, additional, and Nunes Nesi, Cristiano, additional
- Published
- 2022
- Full Text
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5. CONSUMIDORES COMO SUJEITOS PARA A CONTINUIDADE DA FEIRA DA AGRICULTURA FAMILIAR EM XAXIM/SC
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Mânica Radaelli, Idiane, primary, NUNES NESI, CRISTIANO, additional, and Angelita Deggerone, Zenicléia, additional
- Published
- 2022
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6. Flutuação populacional de Parastenopa oglobini (Blanchard) em erva-mate
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Chiaradia, Luís Antonio, Milanez, José Maria, and Nunes Nesi, Cristiano
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Ilex paraguariensis ,mosca minadora-dos-ramos - Abstract
– Larvae of the fly Parastenopa oglobini (Blanchard) (Diptera: Tephritidae) mine the stems of the treesof paraguay tea (Ilex paraguariensis St. Hil., Aqüifoliaceae), and results in swelling, darkening and dropping of theleaves drying of the sprouts and reduction of the orchard productivity. With the objective to assess the populationfluctuation of adults of this insect, a study was conducted in an orchard situated in Chapecó, Santa Catarina, Brazil.The samplings were carried out in the period of July of 2003 to June of 2006 using vacuum equipment (D-Vac).Fly incidence was low in the late Winter and beginning of Spring and higher in the months with high temperatures.Average temperature and wind speed had the greatest influences on the population of this pest. As larvas da mosca Parastenopa oglobini (Blanchard) (Diptera: Tephritidae) broqueiam os ramos das plantas de erva-mate (Ilex paraguariensis St. Hil., Aqüifoliaceae), causando-lhes engrossamento, escurecimento, soltamento das folhas e secagem das brotações, reduzindo a produtividade dos ervais. Com o objetivo de conhecer a flutuação populacional de adultos deste inseto foi conduzido um estudo em um erval situado em Chapecó, SC. As amostragens foram realizadas no período de julho de 2003 a junho de 2006 utilizando um aspirador entomológico. A incidência da mosca foi baixa no final do inverno e no início da primavera e mais alta nos meses de temperatura elevada. A temperatura média e a velocidade do vento exerceram as maiores influências sobre a população desta praga.
- Published
- 2021
7. Sistemas de preparo do solo, doses e fontes de adubo nitrogenado na produtividade de milho
- Author
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Scherer, Eloi Erhard and Nunes Nesi, Cristiano
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suínos ,aves ,nitrogênio ,estercos ,Zea mays L - Abstract
– Manure, if managed and used properly, is a good source of nutrients for crop production. To evaluatethe effects of manure and N fertilizer applied on soil surface on corn grain yields, in no-tillage and conventionaltillage systems, a field trial was carried out on a Red Latosol (Oxisol) in Chapecó, Santa Catarina State, Brazil.The experiment was placed under randomized blocks design with split-plots and four replications.The main plotswere represented by different soil tillage (conventional tillage and no-tillage), and the sub-plots by doses of pigslurry (zero, 60, 120 and 240kg N/ha) and sources of N (ammonium nitrate and poultry house litter), applied atthe dose of 120kg N/ha. Corn grain yield response was observed for all N sources. In all four years, pig slurry Nhad similar efficiency to ammonium nitrate N on corn yield. In conventional tillage system there were nosignificant differences on corn yield among the N sources but in no-tillage system the surface poultry house litterapplication had a lower performance.There were no interaction effects of tillage and N rates (pig slurry) on cornyields. The maximum grain yield was estimated with an annual application of 192kg N/ha of pig slurry. O objetivo deste trabalho foi avaliar a resposta do milho à aplicação de esterco de aves (EA), de suínos (ES) e nitrato de amônio (NA) em dois sistemas de preparo do solo. O trabalho foi desenvolvido em LatossoloVermelho distroférrico típico, no município de Chapecó, SC, no período de 1998 a 2002. O delineamento experimental foi em blocos ao acaso com parcelas subdivididas e quatro repetições. Nas parcelas foram avaliadosos sistemas de preparo do solo plantio direto (SPD) e convencional (SPC) e nas subparcelas, doses de ES para suprir zero, 60, 120 e 240kg/ha de N e EA e NA aplicados na dose para suprir 120kg/ha de N, além de uma testemunha, sem adubo. Houve resposta significativa do milho à adubação nitrogenada. As maiores produtividades foram obtidas com utilização de NA e ES. Em aplicação superficial, sem incorporação, o EA apresentou menor eficiência em comparação ao ES, que teve eficiência similar ao NA, tanto no SPC como no SPD. A máxima eficiência técnicafoi estimada para uma aplicação anual de 192kg/ha de N-ES.
- Published
- 2021
8. Leaf consumption and oviposition of Palpita forficifera (Lepidoptera: Crambidae) on different olive cultivars.
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Vargas Castilhos, Rodolfo, Cesar Brugnara, Eduardo, and Nunes Nesi, Cristiano
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DISEASE resistance of plants ,OLIVE ,OLIVE leaves ,CRAMBIDAE ,HOST plants ,CULTIVARS ,PEST control ,OVIPARITY ,LEPIDOPTERA ,INTEGRATED pest control - Abstract
The incidence of the olive caterpillar Palpita forficifera is among the main phytosanitary problems in olive groves in Brazil, and the use of resistant cultivars can be a useful tool to be incorporated into an integrated management strategy of this pest. The objective of this study was to evaluate the consumption and oviposition of P. forficifera on three olive cultivars in laboratory bioassays, in order to identify a potential antixenosis-type resistance. The cultivars evaluated were Arbequina, Arbosana and Koroneiki. Oviposition free choice tests were carried on young trees of the cultivars, with 7 days old adults. For consumption, detached leaves from the different cultivars were used in no choice and free choice tests with 5th instar larvae. The oviposition of P. forficifera was similar in all three cultivars. As for consumption, in no choice test, Arbequina had a higher dry mass consumed, yet, in free choice tests, no significant difference was observed in the fresh and dry mass consumed on the three cultivars. These results suggest that none of the cultivars expressed antixenosis-type resistance. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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9. Sistemas agrícolas e alimentares de famílias rurais: análise da multilocalização familiar na região Oeste de Santa Catarina
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Cazella, Ademir Antonio, primary, Dorigon, Clóvis, additional, Nunes Nesi, Cristiano, additional, and Eloy, Ludivine, additional
- Published
- 2020
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10. Corn seed inoculation with Azospirillum brasilense in different nitrogen fertilization management.
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Vicente Alves, Mauricio, Nunes Nesi, Cristiano, Naibo, Gabriela, Henrique Barreta, Matheus, Lazzari, Marcelo, Fiorese Júnior, Ademir, and Skoronski, Everton
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AZOSPIRILLUM brasilense , *EFFECT of fertilizers on plants , *NITROGEN fixation , *INOCULATION of crops , *CORN seeds - Abstract
Seed inoculation with Azospirillum brasilense might be an interesting alternative to reduce the nitrogen demand applied to plants and to enhance the effect of these fertilizers. This study aimed to evaluate the components of maize crops and its response to inoculation with A. brasilense associated with sowing and top cover nitrogen fertilization. A completely randomized block experimental design was used, and the tests were carried out in two crop years. The treatments in the first crop year were: BF + CF: {nitrogen base fertilization (BF) + cover fertilization (CF)}; BF + BI: {BF + A. brasilense bacterium inoculation (BI)}; BF + BI + CF; BI; BI + CF and NFI: {no fertilization or inoculation}. The same treatments were tested in the second crop year, and the CF was added. The tests were carried out in the field, in the municipality of Abelardo Luz - SC - Brazil. The climate is humid mesothermal with hot summers and cold winters (Cfa). The following parameters were evaluated: plant height, leaf and grain nitrogen, yield, thousand-grains weight, and grain moisture. The inoculation of A. brasilense associated with cover fertilization could be an alternative to reduce the demand for N, including an increase in productivity. The use of A. brasilense without N fertilization provided an increase in crop yield. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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11. Emergency and Growth of Passionfruit Following Different Seeding Dates and Stimulant Use, in Subtropical Autumn and Winter
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Brugnara, Eduardo Cesar, primary, Nunes Nesi, Cristiano, additional, Höfs, Alberto, additional, and Ferreira Verona, Luiz Augusto, additional
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- 2018
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12. Survival of White Spot Syndrome Virus–Infected Litopenaeus vannamei Fed with Ethanol Extract of Uncaria Tomentosa
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Júnior, Osmar Tomazelli, primary, Kuhn, Fernanda, additional, Mendonça Padilha, Paulo José, additional, Mota Vicente, Luiz R., additional, Winckler da Costa, Sergio, additional, Corrêa da Silva, Bruno, additional, Schleder, Delano Dias, additional, Nunes Nesi, Cristiano, additional, Dal Magro, Jacir, additional, and de Lamo‐Castellví, Sílvia, additional
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- 2017
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13. O adubo de cama de aviário na produção e na qualidade de mudas de Eucalyptus dunnii Maiden
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Menegatti, Alexandre, primary, Oliveira Santos Ferraz de Arruda, Guilherme, additional, and Nunes Nesi, Cristiano, additional
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- 2017
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14. Sistemas agrícolas e alimentares de famílias rurais: análise da multilocalização familiar na região Oeste de Santa Catarina.
- Author
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Antonio Cazella, Ademir, Dorigon, Clóvis, Nunes Nesi, Cristiano, and Eloy, Ludivine
- Abstract
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- 2020
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15. O adubo de cama de aviário na produção e na qualidade de mudas de Eucalyptus dunnii Maiden
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Menegatti, Alexandre, Oliveira Santos Ferraz de Arruda, Guilherme, Nunes Nesi, Cristiano, Menegatti, Alexandre, Oliveira Santos Ferraz de Arruda, Guilherme, and Nunes Nesi, Cristiano
- Abstract
The poultry manure is an abundant organic residue from the poultry farming, from which a fertilizer can be obtained and used in the production of forest species seedlings. The objective of this study was to evaluate the effect of the poultry manure fertilizer on germination, development and quality of Eucalyptus dunnii Maiden seedlings in a greenhouse. The experimental design was completely randomized, with five treatments and four repetitions. The treatments were 0%, 20%, 40%, 60% e 80% of poultry manure fertilizer added on commercial substrate made of peat and charred rice husk. Periodically (30, 60 and 90 days) the germination speed index, the emergence speed index, the stem diameter, height, the relation between height and stem diameter and the survival of seedlings were evaluated. At 90 days were evaluated the Dickson quality index, dry weight of root, dry weight of shoot and dry weight total. The poultry manure fertilizer is a viable product for use in the production of Eucalyptus dunnii seedlings in moderate amounts. The use of 20% of poultry manure fertilizer in the total volume of the substrate favors the development and quality of the seedlings. Quantities greater than 20% tend to be harmful to germination and their survival., A cama de aviário é um resíduo orgânico abundante provindo da criação de aves, do qual se obtêm um adubo que pode ser utilizado na produção de mudas de espécies florestais. O objetivo deste estudo foi avaliar o efeito do adubo de cama de aviário na germinação, desenvolvimento e qualidade de mudas de Eucalyptus dunnii Maiden em casa de vegetação. O delineamento experimental foi inteiramente casualizado, com cinco tratamentos e quatro repetições. Os tratamentos foram 0%, 20%, 40%, 60% e 80% de adubo de cama de aviário, adicionados ao substrato comercial à base de turfa e casca de arroz carbonizada. Foram avaliados periodicamente (30, 60 e 90 dias) o índice de velocidade de germinação, índice de velocidade de emergência, diâmetro de coleto, altura, relação entre altura e diâmetro do coleto e a sobrevivência das mudas. Aos 90 dias avaliaram-se o índice de qualidade de Dicksone os pesos de matéria seca das raízes, da parte aéreae total. O adubo de cama de aviário é um produto viável para produção de mudas de Eucalyptus dunniiem quantidades moderadas. O uso de 20% de adubo de cama de aviário no volume total do substrato favorece o desenvolvimento e a qualidade das mudas. Quantidades superiores a 20% tendem a ser prejudiciais à germinação e à sobrevivência das mesmas.
- Published
- 2017
16. Comportamento químico do solo e satisfação dos produtores rurais após o uso de cinza
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Alves, Mauricio Vicente, Nunes Nesi, Cristiano, Naibo, Gabriela, Gaio Spricigo, Jaqueline, Bender, Andressa Classer, Antunes da Cruz, Débora Cristina, Chagas, Andressa, Curti, Gilberto Luiz, Alves, Mauricio Vicente, Nunes Nesi, Cristiano, Naibo, Gabriela, Gaio Spricigo, Jaqueline, Bender, Andressa Classer, Antunes da Cruz, Débora Cristina, Chagas, Andressa, and Curti, Gilberto Luiz
- Abstract
The high cost and correct disposal of the forest biomass ash lead the pulp companies to break new ground in sustainable ways for using and disposing of the ash. The objective of this study was to evaluate the application of forest biomass ash in rural properties, as well as the satisfaction of agricultural producers regarding the application or none application of ash. The study was carried out in the municipality of Vargem Bonita - SC, in 14 rural properties, where soil samples were taken in areas with and without gray application. In an area of twenty square meters, 10 points were collected, and a representative sample was obtained for the determination of macros and micronutrients, pH, SMP index, organic matter content and some heavy metals. The data were submitted to the Kruskal-Wallis test. When ash was applied to the soil, the pH, SMP index, phosphorus (P), potassium (K) and calcium (Ca) increased, the Mn and Al elements decreased, and the heavy metals did not differ significantly between the areas where ash was or was not applied. The ash in these conditions favored soil quality, and the vast majority of producers were satisfied with its use and would like to use it again., O alto custo e correto descarte da cinza de biomassa florestal leva as empresas de celulose apresentar formas sustentáveis do uso e descarte da cinza. O objetivo deste estudo foi avaliar a aplicação de cinza de biomassa florestal em propriedades rurais, bem como a satisfação dos produtores rurais em relação a aplicação ou não da cinza. O estudo foi realizado no município de Vargem Bonita – SC, em 14 propriedades rurais, onde foram realizadas amostras de solo em áreas com e sem aplicação cinza. Em uma área de vinte metros quadrados foram coletados 10 pontos, sendo que foram obtidos uma amostra representativa, para a determinação dos macros e micros nutrientes, pH, índice SMP, teor de matéria orgânica e alguns metais pesados. Os dados foram submetidos ao Teste de Kruskal-Wallis. Quando aplicado cinzas no solo, o pH, índice SMP, fósforo (P), potássio (K) e cálcio (Ca) apresentaram aumentos, os elementos Mn e Al diminuíram e os metais pesados não diferiram significativamente entre as áreas onde foi aplicado e a que não foi aplicado a cinza. As cinzas nestas condições favoreceram a qualidade do solo e a grande maioria dos produtores ficaram satisfeitos com sua utilização e voltariam a usar em outras ocasiões.
- Published
- 2017
17. Eficiência de fertilizante fosfatado protegido na cultura do milho
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Almeida, Tiago, Pocojeski, Elisandra, Nunes Nesi, Cristiano, Souza da Silva, Leandro, Pereira Machado de Oliveira, Jaqueline, Almeida, Tiago, Pocojeski, Elisandra, Nunes Nesi, Cristiano, Souza da Silva, Leandro, and Pereira Machado de Oliveira, Jaqueline
- Abstract
The objective of the study was to evaluate the efficiency of a protected phosphate fertilizer (Top-Phos®) compared to single superphosphate (SSP) for the corn crop. The experiment was conducted in Galvão-SC, with corn at harvest 2012/2013 in two distinct areas: Experiment 1 - with high levels of available P in which received the following treatments: SSP, protected phosphate fertilizer and the witness; and Experiment 2 - containing medium available phosphorus, in which the area was divided into two tracks, one of which received the application of acidity corrective, and the other track remained with the original pH. Subsequently, each track received the same treatments used for experiment 1. The experiments were conducted in a randomized block design with four replications each. The evaluations were green and dry matter and grain yield. For the experiment 1, there was a significant difference between treatments for the variable dry matter and grain yield with highest production with the application of the protected phosphate fertilizer. In experiment 2, there was no significant difference between the SSP and the protected phosphate to dry matter, in the area with acidity correction and for grain yield in the area without acidity correction. The phosphate fertilizer protected is efficient, especially in the dry matter production and grain yield of maize compared to the SSP in corrected acidity of soils with medium and high levels of this nutrient., O objetivo do trabalho foi avaliar a eficiência do fertilizante fosfatado protegido (Top-Phos®) em relação ao superfosfato simples (SFS) na cultura do milho. O experimento foi desenvolvido em Galvão-SC, com a cultura do milho, na safra 2012/2013, em duas áreas distintas: Experimento 1 - com alto teor de P disponível, a qual recebeu os seguintes tratamentos: SFS, fertilizante fosfatado protegido e controle; e, Experimento 2 - com médio teor de fósforo disponível, cuja área foi subdividida em duas faixas, uma recebeu aplicação de corretivo para elevar o pH e a outra faixa manteve-se o pH original. Posteriormente, cada uma destas recebeu os mesmos tratamentos utilizados para o experimento 1. Os experimentos foram realizados em delineamento de blocos ao acaso, com quatro repetições. As avaliações realizadas foram produção de matéria verde e seca e produtividade de grãos. Para o experimento 1, houve diferença significativa entre os tratamentos para as variáveis massa de matéria seca e produtividade de grãos, com maiores produções com a aplicação do fertilizante fosfatado protegido. No experimento 2, não houve diferença significativa entre o SFS e o fosfato protegido, para massa de matéria seca,na área com correção de acidez e, para a produtividade de grãos, na área sem correção de acidez. O fertilizante fosfatado protegido se mostra eficiente, principalmente na produção de matéria seca e na produtividade de grãos da cultura do milho comparado ao SFS em solos de acidez corrigida e com médio e alto teor desse nutriente.
- Published
- 2016
18. INFLUÊNCIA DA ADUBAÇÃO NITROGENADA NO TEOR NUTRICIONAL E NA PRODUTIVIDADE DA CANA-DE-AÇÚCAR
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Gatto Foletto, Josecler, primary, Vicente Alves, Mauricio, additional, Nunes Nesi, Cristiano, additional, Maccari, Marcieli, additional, and Skoronski, Everton, additional
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- 2016
- Full Text
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19. EFEITO DO NITROGÊNIO INCORPORADO OU EM SUPERFÍCIE NA PRODUTIVIDADE DE MILHO
- Author
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Peruzzo, Andressa, primary, Lunelli, Leticia, additional, Vicente Alves, Mauricio, additional, and Nunes Nesi, Cristiano, additional
- Published
- 2016
- Full Text
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20. Survival analysis in plant pathology
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Nunes Nesi, Cristiano, Emiko Shimakura, Silvia, Ribeiro Junior, Paulo Justiniano, and May De Mio, Louise Larissa
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Kaplan-Meier ,time-occurrence ,regresión de Cox ,tiempo-ocurrencia ,Cox regression - Abstract
Survival analysis is applied when the time until the occurrence of an event is the object of interest. Such data are routinely collected in plant pathology whereas application of methods of survival analysis is uncommon. Basic concepts in survival analysis for use in plant pathology such as Kaplan-Meier methods, log-rank test and Cox proportional hazards models are introduced and applied estimating the effects of cultivars on the survival times of brown rot symptoms and on the instantaneous risk of expressing symptoms in a hypothetical study. El análisis de supervivencia se aplica cuando el tiempo hasta la ocurrencia de un evento es el objeto de interés. En enfermedades vegetales, tales datos se recogen habitualmente, aunque aplicación no es común. El objetivo de este trabajo fue introducir conceptos básicos de análisis de supervivencia para su uso en patología vegetal. Fueron utilizados métodos de Kaplan-Meier, prueba log-rank y riesgos proporcionales de Cox para estimar el efecto de cultivares en la expresión de los síntomas de la pudrición parda y sobre el riesgo instantáneo de expresar en un estudio hipotético.
- Published
- 2013
21. Damage caused by citrus canker on Valencia sweet orange yield
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Cesar Brugnara, Eduardo, de Faria Theodoro, Gustavo, Nunes Nesi, Cristiano, Ferreira Verona, Luiz Augusto, and Carlos Maringoni, Antonio
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Xanthomonas axonopodis pv. citri ,incidence ,severity ,incidencia ,severidad ,Citrus sinensis - Abstract
The citrus canker, caused by Xanthomonas axonopodis pv. citri, is one of the main citrus diseases and has threatened the world's citriculture. In this study, the damage caused by citrus canker was quantified in a sweet orange culture, cv. Valencia [Citrus sinensis (L.) Osb.], grafted over 15 year-old Rangpur lime (C. limonia Osb.), in the municipality of Guatambu, SC, Brazil, in the crop of 2004/05. Evaluations of the number of fruits per plant (NF), fruit yield per plant (P), citrus canker incidence on the fruit (IFR), and incidence (IL) and severity (SV) of citrus canker on 80 leaves per orange tree were performed in the harvest period, applying diagrammatical scales. Plants had large variation in SV (0.16%-1.09%), IL (12.50%-56.25 %) and IFR (12.30%-56.09%). Linear regressions were significant between IL x SV, NF x SV, P x IFR, and NF x IFR. There was no significant difference (p>0.05) between the mean estimated values of IL in different quadrants of the crowns of the orange trees (N, S, L and O). Each 1% increase in IFR reduced 2.16 kg and 21.3 fruits per tree. El cancro cítrico causado por Xanthomonas axonopodis pv. citri, es una de las principales enfermedades de los cítricos y tiene amenazada la industria de los cítricos en todo el mundo. En este trabajo se cuantificó el daño causado por el cancro cítrico en la producción de naranja dulce cv. Valencia /Citrus sinensis (L.) Osb.] injertada en limón 'Cravo' (C. limonia Osb.), con 15 años de edad, en el municipio de Guatambú, SC, Brasil, en la cosecha 2004/05. En el momento de la cosecha, se evaluó el número de frutos por planta (NF), el rendimiento de frutos por planta (R), la incidencia de cancro en los frutos (IFR) y la incidencia (IFL) y severidad (SV) de cancro en 80 hojas/planta, utilizando escalas diagramáticas. Las plantas presentaron gran variación en SV (de 0,16 a 1,09%), IFL (12,50 a 56,25%) y IFR (12,30 a 56,09%). Fue posible adaptarse regresiones lineales simples entre IFL x SV, NFx SV, R x IFR y entre NFx IFR. No hubo diferencias significativas (p> 0,05) entre los medios de IFL estimados en los diferentes cuadrantes de la copa de las plantas (N, S, E y O). A cada incremento de 1% en IFR se reduce la producción por planta en 2,16 kg y 21,3 frutos.
- Published
- 2012
22. Efeito do nitrogênio incorporado ou em superfície na produtividade de milho
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Peruzzo, Andressa, Lunelli, Leticia, Alves, Mauricio Vicente, Nunes Nesi, Cristiano, Peruzzo, Andressa, Lunelli, Leticia, Alves, Mauricio Vicente, and Nunes Nesi, Cristiano
- Abstract
The aim of this work was to evaluate the effect of increasing doses of nitrogen (N) incorporated to the soil or applied on surface over, the yield components of corn. The study was conducted in the municipality of São Domingos. The experiment was conducted in a randomized complete design with four replications in a split plot. The plot was adopted N application mode (built-in or on the soil surface), always beside the seedig line. Four doses of N applied were evaluated in the form of urea in the V4 stage of the crop, as follows: control, without N application; 66 kg ha-1 of N; 132 kg ha-1 of N and 198 kg ha-1 of N. The hybrid used for the experiment was the DKB 240 VT PRO2. The number of rows per ear increased linearly to incorporated and unincorporated nitrogen. The other variables showed a quadratic response when the nitrogen was incorporated into the soil and linear response when the N was not incorporated except for the thousand grain weight. The maximum grain yield was obtained with 127.3 kg ha-1 of N incorporated into the soil and increase of 11.5 kg ha-1 of corn for each kg ha-1 of N applied to the surface., O objetivo deste trabalho foi avaliar o efeito de doses de nitrogênio (N) incorporado ao solo ou aplicado em superfície, nos componentes do rendimento da cultura do milho. O estudo foi desenvolvido no município de São Domingos, SC, sob um delineamento experimental inteiramente ao acaso com quatro repetições e parcelas subdivididas. Na parcela principal, foi adotado o modo de aplicação de N (incorporado ou em superfície do solo), sempre ao lado da linha de plantio. Na subparcela foram avaliadas quatro doses de N aplicado na forma de ureia no estádio V4 da cultura, sendo: testemunha, sem aplicação de N, e 66, 132 e e 198 kg ha-1 de N. O híbrido utilizado foi o DKB 240 VT PRO2. O número de fileiras por espiga aumentou de forma linear para nitrogênio incorporado e não incorporado. As demais variáveis apresentaram resposta quadrática quando o nitrogênio foi incorporado ao solo e resposta linear quando o N não foi incorporado, exceto para a massa de mil grãos. O máximo rendimento de grãos foi obtido com 127,3 kg ha-1 de N incorporado ao solo e incremento de 11,5 kg ha-1 de milho para cada kg ha-1 de N aplicado em superfície
- Published
- 2015
23. Survival of White Spot Syndrome Virus–Infected Litopenaeus vannamei Fed with Ethanol Extract of Uncaria Tomentosa.
- Author
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Júnior, Osmar Tomazelli, Kuhn, Fernanda, Mendonça Padilha, Paulo José, Mota Vicente, Luiz R., Winckler da Costa, Sergio, Corrêa da Silva, Bruno, Schleder, Delano Dias, Nunes Nesi, Cristiano, Dal Magro, Jacir, and de Lamo‐Castellví, Sílvia
- Subjects
WHITE spot syndrome virus ,WHITELEG shrimp ,ETHANOL ,UNCARIA tomentosa ,IMMUNOLOGICAL adjuvants - Abstract
Abstract: With the present project, the phytochemical composition of Uncaria tomentosa cultivated in Chapecó (Brazil) was analyzed and then the potential of using this local plant extract to protect by oral feeding virus‐infected Litopenaeus vannamei shrimp was also investigated. For this study, five treatments were tested: uninfected shrimp fed with pelleted feed (T
C ), WSSV‐infected shrimp fed with pelleted feed (T1 ), infected shrimp fed with pelleted feed with 1% ethanol extract of U. tomentosa (EEUT) (T2 ), infected shrimp fed with pelleted feed with 2% EEUT (T3 ), and infected shrimp fed pelleted feed with 4% EEUT (T4 ). The chemical analysis of EEUT showed the presence of alkaloids, flavonoids, sterols, terpenes, coumarins, and tannins and also a high in vitro free radical‐scavenging activity as well as high total phenolic content. Shrimp fed with 2 and 4% EEUT (T3 and T4 ) showed a survival probability significantly higher than T1 and T2 treatments and no clinical symptoms of WSSV infection. Immunological assay also showed a positive phenoloxidase activity effect on shrimp fed with EEUT. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
24. Efeito de um suplemento mineral traço e vitaminas A e E injetáveis sobre a produção e composição de leite em vacas Holandesas.
- Author
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Giacomini Collet, Silvana, Alan Demeda, Mateus, Vinícius Taffare, Gustavo, Taffarel, Letícia, Kolling Girardini, Lilian, Nunes Nesi, Cristiano, Celso Hoff, Marlon, and do Rego Leal, Marta Lizandra
- Abstract
Copyright of Revista de Ciencias Agroveterinarias is the property of Revista de Ciencias Agroveterinarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
25. Survival analysis in plant pathology
- Author
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Nunes Nesi, Cristiano, primary, Emiko Shimakura, Silvia, additional, Ribeiro Junior, Paulo Justiniano, additional, and May De Mio, Louise Larissa, additional
- Published
- 2013
- Full Text
- View/download PDF
26. Produtividade, incidência de podridões de colmo e qualidade de grãos de milho cultivados sob diferentes arranjos espaciais e densidades de plantas.
- Author
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Spagnollo, Evandro, Wordell Filho, João Américo, and Nunes Nesi, Cristiano
- Abstract
Copyright of Revista de Ciencias Agroveterinarias is the property of Revista de Ciencias Agroveterinarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2016
- Full Text
- View/download PDF
27. Damage caused by citrus canker on Valencia sweet orange yield
- Author
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Cesar Brugnara, Eduardo, primary, de Faria Theodoro, Gustavo, additional, Nunes Nesi, Cristiano, additional, Ferreira Verona, Luiz Augusto, additional, and Carlos Maringoni, Antonio, additional
- Published
- 2012
- Full Text
- View/download PDF
28. Superação de dormência em sementes de Jatobá avaliadas por análise de sobrevivência.
- Author
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Nunes Nesi, Cristiano, Oliveira Santos Ferraz de Arruda, Guilherme, and Menegatti, Alexandre
- Abstract
This work evaluated methods of overcoming dormancy in Jatoba seeds (Hymenaea courbaril L.) by utilizing survival analysis. 75 seeds per treatment were evaluated: without treatment (T1), immersion in water at outdoor temperature for 120 h (T2) and 72 h (T3), immersion in water at 90 ºC and rest in the same water for 24 h (T4), mechanical scarification (T5) and mechanical scarification and soaking it in water for 24 h (T6). The seeds germinated per treatment were registered daily. The Kaplan-Meier method was utilized to estimate the curves of survival and median periods for the germination, the log-rank test and the Cox semiparametric model to estimate the effect of the treatments. The median periods of germination were 56 days (T4) and 33 days (T6). The seeds submitted to T4, T5 and T6 have respectively 22.5, 4.7 and 3.7 times higher capacity to germinate (shorter period for germination) than those seeds that were not submitted to overcoming dormancy. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
29. Susceptibility levels and grouping of peach cultivars in relation to peach rust under field conditions.
- Author
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Alves, Giselda, Spolti, Piérri, Nunes Nesi, Cristiano, Medeiros Del Ponte, Emerson, and De Mio, Louise Larissa May
- Subjects
PEACH varieties ,PLANT growth ,DEFOLIATION ,EXPERIMENTAL agriculture ,PRINCIPAL components analysis - Abstract
Copyright of Acta Scientiarum: Agronomy is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
30. Avaliação de extrato de algas no progresso temporal da mancha de mycosphaerella em cultivares de morangueiro.
- Author
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Nunes Nesi, Cristiano, de Azevedo Kuhn, Taciana Melissa, Silva Araujo, Emily, Mógor, Átila Francisco, and De Mio, Louise Larissa May
- Subjects
LEAF spots ,LEAF diseases & pests ,MYCOSPHAERELLA leaf blotch disease ,STRAWBERRY diseases & pests ,MARINE algae - Abstract
Copyright of Revista Ceres is the property of Revista Ceres and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
- Full Text
- View/download PDF
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