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| SCHOSSLER,THIAGO R.; MARCHÃO,ROBÉLIO L.; SANTOS,ISIS L. DOS; SANTOS,DJAVAN P.; NÓBREGA,JÚLIO CÉSAR A.; SANTOS,GLENIO G.. |
| Abstract Soil quality is essential for maintaining the sustainability of agro-ecosystems and ecosystem services provided by this natural resource. The present study aimed to assess the physical quality of soil through the characterization of the physical properties in grain production systems in the Southwest region of Piauí State, Brazil. The study was carried out in the Cerrado region of Piauí in four cities in areas of expansion of the agricultural frontier of the state: Baixa Grande do Ribeiro, Sebastião Leal, Uruçuí and Bom Jesus. Soil samples were collected in April 2012, in areas of grain production under conventional and no-tillage systems. Adjacent areas with native vegetation were also sampled as reference. Bulk density, effective saturation,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sustainable intensification; No-tillage porosity aggregation Oxisols. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703975 |
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| Ulguim,André da Rosa; Carlos,Filipe Selau; Santos,Rodrigo Areze da Silva; Zanon,Alencar Junior; Werle,Isabel Schlegel; Beck,Mattheus. |
| ABSTRACT: This research aimed to evaluate the phytosociology of weeds in irrigated rice in different soil management systems and crop rotation intensity. Therefore, two field studies were carried out. Study 1 was conducted in an area that has been cultivated since 1994 with three cultivation systems: direct, pre-germinated and conventional ones. Study 2 was carried out in an experimental area in five Integrated Farming Systems, with crop rotation. Phytosociological evaluations were conducted when rice was fully blooming, in the first study, and when grain filling was ending, in the second study. Pre-germinated system of rice cultivation has predominance of aquatic weeds. Conventional system when compared with direct sowing has lower weed densities.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Red rice; Sustainable intensification. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100150 |
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| Carvalho,Paulo César de Faccio; Barro,Raquel Santiago; Barth Neto,Armindo; Nunes,Pedro Arthur de Albuquerque; Moraes,Anibal de; Anghinoni,Ibanor; Bredemeier,Christian; Bayer,Cimélio; Martins,Amanda Posselt; Kunrath,Taise Robinson; Santos,Davi Teixeira dos; Carmona,Felipe de Campos; Barros,Thiago; Souza Filho,William de; Almeida,Gleice Menezes de; Caetano,Luis Augusto Martins; Cecagno,Diego; Arnuti,Fernando; Denardin,Luiz Gustavo de Oliveira; Bonetti,João de Andrade; Toni,Cezar Augusto Gama de; Borin,José Bernardo Moraes. |
| ABSTRACT This paper aims to discuss the impact of the introduction of pastures and grazing animals in agricultural systems. For the purposes of this manuscript, we focus on within-farm integrated crop-livestock systems (ICLS), typical of Southern Brazil. These ICLS are designed to create and enhance the synergisms and emergent properties have arisen from agricultural areas where livestock activities are integrated with crops. We show that the introduction of the crop component will affect less the preceding condition than the introduction of the livestock component. While the introduction of crops in pastoral systems represents increasing diversity of the plant component, the introduction of animals would represent the entry of new flows and interactions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing management; Integrated crop-livestock system; Sustainable intensification. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100300 |
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| Guera,Keli Cristina Silva; Fonseca,Adriel Ferreira da; Harkatin,Silvano. |
| ABSTRACT Conservation agriculture practices, such as integrated crop-livestock system (ICLS), can result in efficiency of phosphorus use and, economic and environmental benefits. The higher nutrient cycling, deposited crop and animal residues in the soil surface can promote the maintenance of soil fertility. Thus, the anticipated of phosphate fertilization may be a viable strategy of fertilization for soybean crop, in this system. The objective of this work was to determine the yield, accumulation of P and phosphorus use efficiency (PUE) on the dry biomass and grains of the soybean crop, in an integrated crop-livestock system (ICLS) due to anticipated fertilization of sources and doses phosphates annually applied in the soil surface. The experiment was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anticipated fertilization; Sustainable intensification; Glycine max (L.) Merr. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300404 |
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