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	Provedor de dados Agronomy (5) Organic Eprints (5) PFB - Pesquisa Florestal Brasileira (3) Autor Pereira, Marcos Gervasio (13) Loss, Arcângelo (4) Anjos, Lúcia Helena Cunha dos (3) Schultz, Nivaldo (3) Silva, Eliane Maria Ribeiro da (3) Abboud, Antônio Carlos de Souza (2) Camara, Rodrigo (2) Carvalho Júnior, João Andrade (2) Castro, Cristina (2) Devide, Antonio (2) Frade Júnior, Elizio Ferreira (2) Guareschi, Roni Fernandes (2) Machado, Murilo Rezende (2) Ribeiro, Raul de Lucena Duarte (2) Sampaio, Paulo de Tarso Barbosa (2) Santos, José Carlos dos (2) Silva Neto, Eduardo Carvalho da (2) Silva, Sandra Bezerra da (2) Assumpção, Patrick (1) Assumpção, Patrick Ayrivie de (1) Mais... Palavra-chave Amazonian agroecosystem (2) Brasil. (2) Crop combinations and interactions (2) Cycling of nutrients (2) Nutrient cycling (2) Soil fertility (2) Soil management (2) 5.00.00.00-4 ecological groups (1) Atlantic Forest (1) Biodiversity and ecosystem services (1) Ciclagem de nutrientes (1) Ciclagem de nutrientes. (1) Ciências Agrárias - Agronomia - Ciência do Solo soil organic matter (1) Ciências Agrárias Amazon deforestation (1) Decomposition (1) Decomposição (1) Edaphic attributes (1) Environmental reclamation (1) Farming Systems (1) Flemingia macrophylla (1) Mais... Tipo do documento Info:eu-repo/semantics/article (8) Journal paper (3) Conference paper, poster, etc. (2) Ano 2019 (2) 2017 (1) 2016 (1) 2014 (2) 2013 (3) 2011 (1) 2010 (1) 2009 (2) Mais... País Brazil (8) Germany (5) Idioma Inglês (5) Português (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 13 Primeira ... 1 ... Última Quantificação do carbono das substâncias húmicas em diferentes sistemas de uso do solo e épocas de avaliação. Organic Eprints Loss, Arcângelo; Pereira, Marcos Gervasio; Schultz, Nivaldo; Anjos, Lúcia Helena Cunha dos; Silva, Eliane Maria Ribeiro da. A quantificação do carbono nas diferentes frações da matéria orgânica do solo (MOS) torna-se necessária devido ao interesse de se conhecer o potencial de captura e armazenamento do carbono nos diferentes sistemas de uso do solo. O objetivo deste trabalho foi quantificar o carbono das substâncias húmicas em diferentes sistemas de uso do solo e épocas de avaliação e correlacioná-lo com algumas propriedades químicas e físicas do solo. Os sistemas selecionados foram: preparo convencional (PC-milho/feijão), plantio direto (PD-berinjela/milho), consórcio maracujá/Desmodium sp, cultivo com figo e sistema agroflorestal. As amostras de solo foram coletadas em duas profundidades (0-5 e 5-10 cm) e épocas (17/11/2005–verão e 23/6/2006-inverno). Foi determinado o... Tipo: Journal paper Palavras-chave: Soil. Ano: 2010 URL: http://orgprints.org/20440/1/Loss_quantifica%C3%A7%C3%A3o.pdf GESTIÓN AMBIENTAL DE LOS SISTEMAS AGROFORESTALES EN EL VALLE DE PARAÍBA DEL SUR, ESTADO DE SAO PAULO, BRASIL Organic Eprints Devide, Antonio; Castro, Cristina; Assumpção, Patrick Ayrivie de; Rodrigues, Geraldo Stachetti; Rodrigues , Isis; Ribeiro, Raul de Lucena Duarte; Abboud, Antônio Carlos de Souza; Pereira, Marcos Gervasio. En el año de 2011 se analizó el desempeño ambiental de la finca Coruputuba, en Pindamonhangaba, Estado de São Paulo, Brasil. La metodología utilizada fué el sistema APOIA-NovoRural, con 62 indicadores de sustentabilidad en el contexto para el análisis de la implementación de los sistemas agroforestales con Calophyllum braziliense y Acacia mangium. Antes de la implementación de los sistemas agroforestales, la finca estuvo plantada con arroz en lo valle y eucalipto en las terrazas. Con el proyecto se logró sustituir 10 ha en el valle y 4 ha de terraza con Calophyllum, especie que ofrece una madera fina. Otra especie que se introdujo en la terraza fue la acacia (50 ha), sustituta del eucalipto. La finca aporta un valor agregado a la gestión dirigida a... Tipo: Conference paper, poster, etc. Palavras-chave: Production systems Crop combinations and interactions Farm economics Food security; Food quality and human health Social aspects Crop health; Quality; Protection Environmental aspects Farm nutrient management. Ano: 2013 URL: http://orgprints.org/24396/16/24396.pdf Atributos químicos e físicos de um Argissolo Vermelho-Amarelo em sistema integrado de produção agroecológica. Organic Eprints Loss, Arcângelo; Pereira, Marcos Gervasio; Schultz, Nivaldo; Anjos, Lúcia Helena Cunha dos; Silva, Eliane Maria Ribeiro da. O objetivo deste trabalho foi avaliar a influência de sistemas de manejo agroecológico sobre os atributos físicos e químicos de um Argissolo Vermelho-Amarelo. Foram selecionadas as seguintes áreas:preparo convencional (milho/feijão); plantio direto (berinjela/milho); consórcio maracujá/Desmodium sp.;área cultivada com figo; e sistema agroflorestal (SAF). Amostras indeformadas de solo foram coletadas sem duas profundidades (0–5 e 5–10 cm) e em duas épocas (verão/2005 e inverno/2006). As propriedades edáficas analisadas foram: densidade do solo (Ds); volume total de poros; diâmetro médio ponderado (DMP)e diâmetro médio geométrico (DMG) de agregados; pH, Al, Ca+Mg, K,H+Al, P e carbono orgânico total(COT). Os maiores valores de Ds, P e K foram verificados na... Tipo: Journal paper Palavras-chave: Soil quality. Ano: 2009 URL: http://orgprints.org/20267/1/Loss_atributos.pdf Distribuição dos agregados e carbono orgânico influenciados por manejos agroecológicos. Organic Eprints Loss, Arcângelo; Pereira, Marcos Gervasio; Schultz, Nivaldo; Ferreira, Edilene Pereira; Silva, Eliane Maria Ribeiro da; Beutler, Sidinei Julio. O objetivo deste estudo foi verificar a influência do manejo agroecológico na distribuição dos agregados estáveis em água e no teor de carbono orgânico dos agregados em diferentes coberturas vegetais. Foram selecionadas cinco áreas, a saber: sistema agroflorestal; cultivo de figo (Ficus carica L.); consórcio maracujá (Passiflora edulis S.)–Desmodium sp.; cultivo de feijão (Phaseolus vulgaris L.), em manejo convencional, e cultivo de milho (Zea mays L.), em plantio direto. Em cada área, foram coletadas amostras de terra indeformadas, nas profundidades de 0 - 5 e 5 - 10 cm, e avaliada a estabilidade dos agregados e o teor de carbono orgânico nos agregados (COAGR). A maior massa de agregados encontra-se na classe de 2,00 mm, em ambas as profundidades, com... Tipo: Journal paper Palavras-chave: Crop combinations and interactions; Farming Systems. Ano: 2009 URL: http://orgprints.org/22003/1/Loss_Distribui%C3%A7%C3%A3o.pdf Sistema agroforestal de yuca y guanandi (Calophyllum braziliense) en el Valle de Paraíba, Estado de São Paulo, Brasil Organic Eprints Devide, Antonio; Castro, Cristina; Ribeiro, Raul de Lucena Duarte; Abboud, Antônio Carlos de Souza; Pereira, Marcos Gervasio; Assumpção, Patrick. La eliminación de vegetación ribereña y un uso intenso de terrazas en el Valle del Río Paraíba do Sul, Estado de São Paulo, Brasil, han causado la degradación de la tierra y la lixiviación de nutrientes y sedimentos por la lluvia. En el año 2008, se introdujo el guanandi – Calophyllum braziliense (3x2m); árbol nativo resistente a inundaciones y productor de madera fina; después del corte de eucaliptos en las terrazas. En 2011 ha comenzado a conversión de agroforestería con un experimento en bloques al azar con 8 repeticiones de cada tratamiento: guanandi, guanandi + yuca (Manihot esculenta) y yuca en sistema agroforestal + guanandi (SAF). La yuca fue plantado entre las líneas de guanandi en filas dobles (0,8 x 0,8 m) y yucas en SAFs fue introducida: Musa... Tipo: Conference paper, poster, etc. Palavras-chave: Production systems; Crop combinations and interactions; Biodiversity and ecosystem services; Root crops. Ano: 2013 URL: http://orgprints.org/24398/15/24398.pdf Carbon, light organic matter and oxidizable organic fractions in alley cropping system PFB - Pesquisa Florestal Brasileira Guareschi, Roni Fernandes; Pereira, Marcos Gervasio. The objective of this study was to evaluate the levels of total organic carbon (TOC) of the soil, light organic matter (LOM) in water and oxidizable fractions of organic carbon in a cultivated area of maize in the alleys Flemingia macrophylla under different managements of their shoot. The study area is located in “Agroecological Fazendinha in Seropédica city, Rio de Janeiro, Brazil. The experimental design was randomized blocks with three treatments and eight replications, consisting of the following treatments: control (corn cultivation with no alleys); cultivation of maize in alley cropping with pruning to 0,6 m high and growing maize in alley cropping system without pruning. In each area composite samples were collected at 0-5 cm. The presence of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Labile carbon; Pruning system; Flemingia macrophylla Carbono lábil; Sistema de poda; Flemingia macrophylla. Ano: 2013 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/450 Deciduous material contribution and soil nutrients in eucalyptus plantations and secondary forest PFB - Pesquisa Florestal Brasileira Diniz, Anderson Ribeiro; Pereira, Marcos Gervasio; Loss, Arcângelo. In this study we evaluated the uptake, decomposition and nutrient release of the deciduous material in summer in areas of secondary forest and eucalyptus plantations in Redenção da Serra, SP. Were installed ten collectors in each area to evaluate the contribution of deciduous material (litter). It was collected every 15 days from December 2003 for 75 days. Part of the litter was placed in decomposition bags and distributed in surface areas, being collected every 15 days for evaluation. The area under eucalyptus showed greater intake of dry matter, lower decomposition constant and longer half life. There was a higher proportion of the fraction in the forest leaves and branches on the fraction area of eucalyptus. At time zero, the area of secondary forest... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic Forest; Decomposition; Nutrient cycling. Floresta Atlântica; Decomposição; Ciclagem de nutrientes.. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/147 Litter production of eucalypt plantations according to site quality PFB - Pesquisa Florestal Brasileira Corrêa Neto, Thais de Andrade; Anjos, Lúcia Helena Cunha dos; Pereira, Marcos Gervasio; Jaccoud, Carlos Fellipe de Siqueira. This study aimed to evaluate deposition and decomposition of litter and nutrient input in an area of eucalyptus plantation in top-sequence. It was verified significant contribution of the stratum leaves, what could be attributed to the age of the plantation. Regarding the rate of decomposition it was observed a decrease in the spring season at all sites. It was observed differences among sites related to top-sequence There was addition of nutrients as P, N and K, with a tendency for larger values of P in the top of the slope. The studied parameters reflect the different characteristics of the studied environmental growth conditions and their growth limitation and it suggest differences in the management of the areas. Tipo: Info:eu-repo/semantics/article Palavras-chave: Litter production; Nutrient cycling; Organic matter Ciclagem de nutrientes Produção de serapilheira; Ciclagem de nutrientes; Matéria orgânica. Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/484 Temporal evaluation of soil chemical attributes after slash-and-burn agriculture in the Western Brazilian Amazon Agronomy Silva Neto, Eduardo Carvalho da; Pereira, Marcos Gervasio; Frade Júnior, Elizio Ferreira; Silva, Sandra Bezerra da; Carvalho Júnior, João Andrade; Santos, José Carlos dos. In Amazonia, the main causes of deforestation are systems based on slash-and-burn agriculture. The objective of this work was to evaluate temporal changes in the soil chemical attributes after the vegetation has been slashed and burned in an area of native forest in the Western Amazon. For this study, four hectares of forest in Cruzeiro do Sul, State of Acre, Brazil, was slashed and burned. The soil in the study area was classified as Ultisol (Argissolo Amarelo Distrófico típico). Soil samples were collected over the course of one year, the first one being collected 16 hours after the burn and the others at 30, 60, 90, 150, 210, 270, and 360 days after the burn. The soil surface layers were more sensitive to fire action. Ashes from vegetation burn... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian agroecosystem; Soil fertility; Cycling of nutrients; Soil management; Brasil.. Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42609 Nutrient retranslocation in forest species in the Brazilian Amazon Agronomy Machado, Murilo Rezende; Sampaio, Paulo de Tarso Barbosa; Ferraz, João; Camara, Rodrigo; Pereira, Marcos Gervasio. Internal retranslocation is an important mechanism for nutrient conservation in plants, which depends on different factors. However, there are little data about this subject, especially on tropical forest species. This study aimed to evaluate the macronutrient retranslocation dynamic and the influence of ecological (P: pioneer x NP: non-pioneer) and phenological (ND: non-deciduous x D: semideciduous / deciduous) characteristics on the macronutrient content of leaves of five tree species on monospecific plantations in the Brazilian Amazon: Acacia mangium Willd., Parkia decussata Ducke, Dipteryx odorata (Aublet) Willd., Jacaranda copaia (Aubl.) D. Don and Swietenia macrophylla King. Photosynthetically active green leaves and senescent leaves (leaf litter)... Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.00.00.00-4 ecological groups; Litterfall; Nutrient cycling; Phenological groups; Plant nutrition Fertilidade do Solo e Adubação. Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/26805 Land cover changes affect soil chemical attributes in the Brazilian Amazon Agronomy Machado, Murilo Rezende; Camara, Rodrigo; Sampaio, Paulo de Tarso Barbosa; Pereira, Marcos Gervasio; Ferraz, João Baptista Silva. Forest plantations may minimize the effects of deforestation in the Amazon. However, there are differences among species in terms of their influences on soil recovery. The effects of monospecific plantations of Acacia mangium, Dipteryx odorata, Jacaranda copaia, Parkia decussata,and Swietenia macrophylla, and areas of pasture and native forest on the chemical soil attributes of the Brazilian Amazon were evaluated. One bulked soil sample was collected per plot (0.00-0.05, 0.05-0.10, and 0.10-0.30 m; three plots of 128 m2) in each area. No significant differences in most of the soil attributes were observed among the forest plantations. However, soil K+ and P were higher in the Swietenia macrophylla plantations, while higher values of Ca2+, sum of bases, and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências Agrárias Amazon deforestation; Edaphic attributes; Environmental reclamation; Forest plantations; Manejo e Conservação do Solo. Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32689 Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome Agronomy Pereira, Marcos Gervasio; Guareschi, Roni Fernandes; Perin, Adriano. The objective of this study was to evaluate the forms of iron extracted as sodium dithionite-citrate-bicarbonate (Fed), acid ammonium oxalate (Feo) and sodium pyrophosphate (Fep) and the relationship between these variables and the total organic carbon content and maximum adsorption capacity of P (MACP). The areas selected for this study had been using a no-tillage system (NTS) for varying periods of time: 3 years (NTS3), 15 years (NTS15) and 20 years (NTS20). These areas were compared with an area of native ‘Cerrado’ (CE) and a pasture area planted with Brachiaria decumbens (PA). The soil of the areas studied was classified as dystrophic oxisol. In each area, samples were collected at 0–5 cm and 5–10 cm. A correlation was observed between the C content... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências Agrárias - Agronomia - Ciência do Solo soil organic matter; Pasture; Iron oxides; Oxisol Fertilidade do Solo soil organic matter; Pasture; Iron oxides; Oxisol. Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17686 Temporal evaluation of soil chemical attributes after slash-and-burn agriculture in the Western Brazilian Amazon Agronomy Silva Neto, Eduardo Carvalho da; Pereira, Marcos Gervasio; Frade Júnior, Elizio Ferreira; Silva, Sandra Bezerra da; Carvalho Júnior, João Andrade; Santos, José Carlos dos. In Amazonia, the main causes of deforestation are systems based on slash-and-burn agriculture. The objective of this work was to evaluate temporal changes in the soil chemical attributes after the vegetation has been slashed and burned in an area of native forest in the Western Amazon. For this study, four hectares of forest in Cruzeiro do Sul, State of Acre, Brazil, was slashed and burned. The soil in the study area was classified as Ultisol (Argissolo Amarelo Distrófico típico). Soil samples were collected over the course of one year, the first one being collected 16 hours after the burn and the others at 30, 60, 90, 150, 210, 270, and 360 days after the burn. The soil surface layers were more sensitive to fire action. Ashes from vegetation burn... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonian agroecosystem; Soil fertility; Cycling of nutrients; Soil management; Brasil.. Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42609 Registros recuperados: 13 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco