7 results on '"Gondim, Joaquim Emanuel Fernandes"'
Search Results
2. Characterization and Classification of Soils in Agroecosystems in a Moist Enclave in Northeastern Brazil.
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Farias, Phâmella Kalliny Pereira, Portela, Jeane Cruz, Batista, Rafael Oliveira, da Costa, Joseane Dunga, Gondim, Joaquim Emanuel Fernandes, de Matos, Geisiane Xavier, Mota, Paulo Jardel, Silva, Eulene Francisco da, Oliveira, Francisco de Assis de, Pereira, Joaquim Odilon, Bandeira, Diego José da Costa, do Nascimento, Claudeone Manoel, de Souza, Rauny Oliveira, Dantas, Matias de Souza, Dantas Moniz, Tiago da Costa, and Araujo, Antonio Genilson Rodrigues
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SOIL classification ,SOIL profiles ,AGRICULTURAL ecology ,FLUVISOLS ,CAMBISOLS - Abstract
Modern times have required studies that take into account the main soil features, aligning the use of land with the protection of more sensitive environments. From this perspective, this study aimed to perform a morphological description and determine the physical and chemical attributes for soil classification in the community of Poção, located in the municipality of Martins/RN, by highlighting the more sensitive attributes in the differentiation of environments through multivariate analysis. Nine soil profiles were identified to perform the morphological description and collect samples for physical and chemical analyses. The study updates the soil classes found in the study area: Acrisols, Planosols, and Cambisols, with the relief being the main factor responsible for the difference between soil attributes. The influence of organic matter on the soil attributes highlights the importance of its maintenance. Aluminum and the clay fraction are responsible for the distinction of the Acrisol class, whereas silt, potassium sodium, total organic carbon, the electrical conductivity of the saturation extract, and the cation exchange capacity allow the differentiation of Fluvisols. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
3. Clay Fraction Mineralogy and Structural Soil Attributes of Two Soil Classes under the Semi-Arid Climate of Brazil
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Lopes, Thaís Cristina de Souza, primary, Portela, Jeane Cruz, additional, Batista, Rafael Oliveira, additional, Bandeira, Diego José da Costa, additional, Leite, Isaque de Oliveira, additional, Ramalho, Luirla Bento, additional, Gondim, Joaquim Emanuel Fernandes, additional, Costa, Joseane Dunga da, additional, Gurgel, Marcelo Tavares, additional, Souza, Carolina Malala Martins, additional, Silva, Eulene Francisco da, additional, Souza, Edivan Rodrigues de, additional, Oliveira, Fábio Henrique Tavares de, additional, Miranda, Neyton de Oliveira, additional, and Sá, Francisco Vanies da Silva, additional
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- 2022
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4. Physical, chemical and structural attributes of soil in agroecosystems in the Brazilian Semiarid region
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Mendes, Kellyane da Rocha, primary, Portela, Jeane Cruz, additional, Gondim, Joaquim Emanuel Fernandes, additional, Ribeiro, Matheus Alves, additional, Medeiros, José Francismar de, additional, and Queiroz, Gabriela Carvalho Maia de, additional
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- 2022
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5. Qualidade do solo em agroecossistemas da região semiárida do Estado do Rio Grande do Norte
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Gondim, Joaquim Emanuel Fernandes and Santos, Djail
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Classes de solos ,CIENCIAS AGRARIAS::AGRONOMIA [CNPQ] ,Semiárido ,Atributos de solos ,Macrofauna do Solo - Abstract
Researches aimed to soil quality assessment and the community of macroarthropods in agroecosystems in the Apodi Plateau RN are incipient. Therefore, the present study aimed to evaluate the soil quality and the community of macroarthropods in agroecosystems of the Moacir Lucena settlement, Apodi Plateau RN. Soil profile openings were carried out in the environments of Native Vegetation (Ferralsol), Agroecological (Acrisol), Short Cycle Cultivation (Cambissol) and Fruticulture (Ferralsol), where samples with deformed structure and not deformed in its horizons were collected. Interpolations were performed in the layers 0,00-0,05 0,05-0,15 and 0,15-0,25 m for physical analysis (soil granulometric, soil density, WAD, GMD and water retention) (pH, EC, TOC, macronutrients, BS, CEC, V, PTS and m) and biological (provid traps in each environment in the dry and rainy periods to monitor the macroarthropods community of soil). Multivariate statistics was performed for data analysis. Soil quality indexes were generated for the 0,00-0,25 m layer, using a methodology proposed by Karlen and Stott (1994). The physical attributes of coarse sand, fine sand and total sand were more sensitive in the distinction between the environments of Native Vegetation and Fruticulture (Ferralsol) as well as the chemical attributes such as total organic carbon, potential acidity and aluminum. The differentiation of the Agroecological Environment (Acrisol) was given in function of the variables clay and total porosity, besides the greater water retention in the layer of 0,15-0,25 m, and also regarding the chemical attributes of sodium and exchangeable sodium percentage. The Short Cycle Cultivation environment (Cambissol) was discriminated by the average diameter and higher water retention for the three depths. Regarding the chemical attributes, stood out the calcium, magnesium, sum of base content, cation exchange capacity and hydrogen ion potential. For the soil quality, the Short Cycle and Agroecological Cultivation Environments presented the best indexes. The structure of the edaphic macroarthropod community in the Apodi Plateau RN region was influenced by seasonal variations, agricultural uses and physical and chemical attributes of the soil. In general, greater frequency of occurrence, dry biomass, richness and ecological indexes at the level of order are maintained in the Native and Agroecological Vegetation environments in the rainy season in detriment of to the other environments. The physical attributes related to soil structure (MWD and Tp) and the chemical attributes pH, Ca, Mg and CEC influenced the occurrence of the functional group litter transformes (Coleoptera) in the Short Cycle Cultivation Environment (SCC - Cambissol). The predatory functional group (Araneae) was influenced by the total organic carbon and soil density in the Fruticulture Environment (EF - Ferralsol). Pesquisas voltadas a verificar a qualidade do solo e a comunidade de macroartrópodes em agroecossistemas na Chapada do Apodi–RN são incipientes. Face ao exposto, o presente estudo objetivou avaliar a qualidade do solo bem como a comunidade de macroartrópodes em agroecossistemas no Assentamento Moacir Lucena, Chapada do Apodi-RN. Foram realizadas aberturas de perfis de solo em quatro ambientes Vegetação Nativa (Latossolo Amarelo), Agroecológico (Argissolo Amarelo), Cultivo de Ciclo Curto (Cambissolo Háplico) e Fruticultura (Latossolo Amarelo) e coletadas amostras com estrutura deformada e não deformada em seus horizontes. Posteriormente, foram realizadas interpolações para as camadas 0,00-0,05; 0,05-0,15 e 0,15-0,25 m para análises física (granulometria, densidade do solo, DMP, DMG e retenção de água no solo) química (pH, CE, COT, macronutrientes, SB, CTC, V, PST e m) e biológica (armadilhas provid em cada ambiente nos períodos seco e chuvoso para monitorar a comunidade de macroartrópodes do solo). Foi aplicada estatística multivariada para análise dos dados. Os índices de qualidade do solo foram gerados para a camada 0,00-0,25 m, por meio de metodologia proposta por Karlen e Stott (1994). Os atributos físicos areia grossa, areia fina e areia total foram mais sensíveis na distinção dos ambientes de Vegetação Nativa e Fruticultura (Latossolos) bem como os atributos químicos carbono orgânico total, acidez potencial e alumínio. A diferenciação do Ambiente Agroecológico (Argissolo Amarelo) deu-se em função das variáveis argila e porosidade total, além da maior retenção de água na camada 0,15-0,25 m, bem como os atributos químicos sódio e porcentagem de sódio trocável. O Ambiente de Cultivo de Ciclo Curto (Cambissolo Háplico) foi discriminado pelo diâmetro médio ponderado e maiores retenções de água para as três profundidades, quanto aos atributos químicos destacaram-se cálcio, magnésio, soma de bases, capacidade de troca catiônica e potencial hidrogeniônico. Em relação a qualidade do solo os Ambientes de Cultivo de Ciclo Curto e Agroecológico apresentaram os melhores índices. A estrutura da comunidade edáfica de macroartrópodes na região da Chapada do Apodi-RN foi influenciada pelas variações sazonais, usos agrícolas e atributos físicos e químicos dos solos. De maneira geral, maior frequência de ocorrência, biomassa seca, riqueza e índices ecológicos a nível de ordem são mantidos nos ambientes Vegetação Nativa e Agroecológico no período chuvoso em detrimento a demais ambientes. Os atributos físicos ligados a estrutura do solo (DMP e Pt) bem como os atributos químicos pH, Ca, Mg e CTC influenciaram a ocorrência do grupo funcional transformadores de serrapilheira (Coleoptera) no Ambiente Cultivo de Ciclo Curto (AC - Cambissolo Háplico). O grupo funcional predador (Araneae) foi influenciado pelo carbono orgânico total e densidade do solo no Ambiente de Fruticultura (AF - Latossolo Amarelo).
- Published
- 2018
6. Nutrient losses due to water erosion using simulated rainfall in southern Brazil
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Portela, Jeane Cruz, Cogo, Neroli Pedro, Filho, Jacques Carvalho Ribeiro, Sequinatto, Letícia, Batista, Rafael Oliveira, Souza, Carolina Malala Martins, and Gondim, Joaquim Emanuel Fernandes
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ground cover ,cobertura del suelo ,escorrentía ,erosive process ,cultural sequences ,runoff ,proceso erosivo ,secuencias culturales - Abstract
Erosion is the main form of degradation in the world, consequently of loss of soil, water and nutrients, provoking direct and indirect damages. The objective of this work is to quantify N, P and K losses by water erosion under simulated rainfall conditions by the application of six erosion tests in continuous cultivation of seasonal cycle species, including isolated and intercropped crops. The study was carried out in the field at the Experimental Station of Agronomy in Eldorado do Sul (RS), Brazil, in a typical Dystrophic Red Argisol. For the analysis of nutrient loss, six erosion tests with simulated rainfall were applied to the treatments between the end of October and mid-December, using the rain simulator with swivel arms of Swanson. The losses of N and P were influenced by surface conditions, with the partial removal of crop residues and the non-mobilization of the soil. The exception was K, due to its high solubility in the soil with a low colloidal activity, which was easily lost in the soil water surface runoff, regardless of total soil surface coverage by crop residues. Resumen La erosión es la principal forma de degradación en el mundo, en consecuencia de la pérdida de suelo, agua y nutrientes, provocando daños directos e indirectos. El objetivo de este trabajo es cuantificar las pérdidas de N, P y K por erosión hídrica en condiciones de lluvia simulada mediante la aplicación de seis pruebas de erosión en cultivo continuo de especies de ciclo estacional, incluyendo cultivos aislados y cultivos intercalados. El estudio se llevó a cabo en el campo en la Estación Experimental de Agronomía en Eldorado do Sul (RS), Brasil, en un Argisol Rojo Distrófico típico. Para el análisis de la pérdida de nutrientes, se aplicaron seis ensayos de erosión con lluvia simulada a los tratamientos entre finales de octubre y mediados de diciembre, utilizando el simulador de lluvia con brazos giratorios de Swanson. Las pérdidas de N y P se vieron influenciadas por las condiciones de la superficie, con la eliminación parcial de los residuos del cultivo y la no movilización del suelo. La excepción fue K, debido a su alta solubilidad en el suelo con baja actividad coloidal, que se perdió fácilmente en la escorrentía superficial del agua del suelo, independientemente de la cobertura total de la superficie del suelo por los residuos de los cultivos.
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- 2018
7. Nutrient losses due to water erosion using simulated rainfall in southern Brazil
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Portela, Jeane Cruz, primary, Cogo, Neroli Pedro, additional, Filho, Jacques Carvalho Ribeiro, additional, Sequinatto, Letícia, additional, Batista, Rafael Oliveira, additional, Souza, Carolina Malala Martins, additional, and Gondim, Joaquim Emanuel Fernandes, additional
- Published
- 2018
- Full Text
- View/download PDF
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