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| Registros recuperados: 11 | |
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| Silva,Érika Andressa da; Oliveira,Geraldo César de; Silva,Bruno Montoani; Carducci,Carla Eloize; Avanzi,Junior Cesar; Serafim,Milson Evaldo. |
| Studies testing the High Energy Moisture Characteristic (HEMC) technique in tropical soils are still incipient. By this method, the effects of different management systems can be evaluated. This study investigated the aggregation state of an Oxisol under coffee with Brachiaria between crop rows and surface-applied gypsum rates using HEMC. Soil in an experimental area in the Upper São Francisco region, Minas Gerais, was studied at depths of 0.05 and 0.20 m in coffee rows. The treatments consisted of 0, 7, and 28 Mg ha-1 of agricultural gypsum rates distributed on the soil surface of the coffee rows, between which Brachiaria was grown and periodically cut, and compared with a treatment without Brachiaria between coffee rows and no gypsum application. To... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggregation; Coffee production; Management systems; Method. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500028 |
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| Camas Gómez, Robertony. |
| En el trópico subhúmedo de México, la mayor parte de la agricultura se lleva a cabo en pequeñas unidades de producción en laderas abruptas truncadas donde la erosión del suelo es la principal causa de los bajos rendimientos e ingresos económicos. Con el objetivo de encontrar alternativas tecnológicas sostenibles, se evaluaron a nivel de microcuenca los sistemas: maíz en labranza cero con pastoreo (MLCP); maíz en barreras de muro vivo (MBMV) y milpa intercalada con árboles frutales (MIAF), en términos del control de la erosión, productividad, uso del agua y radiación solar, y captura de carbono. En los tres sistemas se determinó la relación entre la posición del suelo en la ladera en función de la pendiente con las condiciones de fertilidad del mismo, lo... |
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Palavras-chave: Sistemas de manejo; Laderas; Erosión; Productividad; Captura de carbono; Management systems; Hillside; Carbon capture; Productivity; Edafología; Doctorado. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/543 |
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| Camas Gómez, Robertony. |
| En el trópico subhúmedo de México, la mayor parte de la agricultura se lleva a cabo en pequeñas unidades de producción en laderas abruptas truncadas donde la erosión del suelo es la principal causa de los bajos rendimientos e ingresos económicos. Con el objetivo de encontrar alternativas tecnológicas sostenibles, se evaluaron a nivel de microcuenca los sistemas: maíz en labranza cero con pastoreo (MLCP); maíz en barreras de muro vivo (MBMV) y milpa intercalada con árboles frutales (MIAF), en términos del control de la erosión, productividad, uso del agua y radiación solar, y captura de carbono. En los tres sistemas se determinó la relación entre la posición del suelo en la ladera en función de la pendiente con las condiciones de fertilidad del mismo, lo... |
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Palavras-chave: Sistemas de manejo; Laderas; Erosión; Productividad; Captura de carbono; Management systems; Hillside; Carbon capture; Productivity; Edafología; Doctorado. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/543 |
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| CHAGAS, J. H.; SOARES SOBRINHO, J.; PIRES, J. L. F.; SÓ E SILVA, M.; ALBRECHT, J. C.; CUNHA, G. R. da; MORESCO, E. R.. |
| As indicações de cultivo e de manejo do trigo de sequeiro, sem irrigação (de segunda safra ou safrinha), apesar dos avanços e dos ajustes das tecnologias nos sistemas agrícolas da região de cerrado do Brasil Central, ainda são baseadas em informações geradas nas décadas de 1970 e de 1980, que constam nos primeiros exemplares de recomendações técnicas da cultura do trigo e que vem sendo adaptadas até hoje, independentemente da cultivar e do sistema de cultivo adotado. Nesse tempo, o cenário agrícola passou por alterações que exigiram ajustes nas tecnologias disponíveis, dentre as quais, a adoção do Sistema Plantio Direto. |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: BRS 404; Trigo de Sequeiro; Variedade; Comportamento de Variedade; Manejo; Sistema de Produção; Wheat; Cultivars; Production technology; Management systems. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1093149 |
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| Campos,Ben-Hur Costa de; Amado,Telmo Jorge Carneiro; Tornquist,Carlos Gustavo; Nicoloso,Rodrigo da Silveira; Fiorin,Jackson Ernani. |
| Soil C-CO2 emissions are sensitive indicators of management system impacts on soil organic matter (SOM). The main soil C-CO2 sources at the soil-plant interface are the decomposition of crop residues, SOM turnover, and respiration of roots and soil biota. The objectives of this study were to evaluate the impacts of tillage and cropping systems on long-term soil C-CO2 emissions and their relationship with carbon (C) mineralization of crop residues. A long-term experiment was conducted in a Red Oxisol in Cruz Alta, RS, Brazil, with subtropical climate Cfa (Köppen classification), mean annual precipitation of 1,774 mm and mean annual temperature of 19.2 ºC. Treatments consisted of two tillage systems: (a) conventional tillage (CT) and (b) no tillage (NT) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Management systems; No tillage; Conventional tillage; Greenhouse gases. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300017 |
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| Silva,Douglas Marcelo Pinheiro da; Campos,Milton César Costa; Franciscon,Uilson; Alho,Leandro Coutinho; Santos,Luis Antônio Coutrim dos; Paula Neto,Pérsio de; Bergamin,Anderson Cristian; Souza,Zigomar Menezes de. |
| ABSTRACT Soils with an A horizon formed by human activity, an anthropogenic A horizon, are found in the Amazon Region. Few studies have examined the spatial distribution of the properties of these soils. We mapped the spatial variability of some soil properties in an area of Archaeological Dark Earth (ADE) in the Brazilian Amazon. A sampling grid was defined over an area of 42 × 88 m under cacao cultivation in which sampling points were established at a spacing of 6 × 8 m, for a total of 88 points. Samples were collected from the 0.00-0.05, 0.05-0.10, 0.10-0.20, and 0.20-0.30 m depth layers. Soil texture, aggregate stability, and organic carbon (OC) analyses were performed on disturbed soil samples. Undisturbed samples were used to determine soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Indian Dark Earth; Management systems; Amazon soils; Anthropogenic soils. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100415 |
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| Registros recuperados: 11 | |
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