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MORPHOLOGICAL AND MICROMORPHOLOGICAL CHANGES IN THE STRUCTURE OF A RHODIC HAPLUDOX AS A RESULT OF AGRICULTURAL MANAGEMENT Rev. Bras. Ciênc. Solo
Silva,Laura Fernanda Simões da; Marinho,Mara de Andrade; Matsura,Edson Eiji; Cooper,Miguel; Ralisch,Ricardo.
In evaluation of soil quality for agricultural use, soil structure is one of the most important properties, which is influenced not only by climate, biological activity, and management practices but also by mechanical and physico-chemical forces acting in the soil. The purpose of this study was to evaluate the influence of conventional agricultural management on the structure and microstructure of a Latossolo Vermelho distroférrico típico (Rhodic Hapludox) in an experimental area planted to maize. Soil morphology was described using the crop profile method by identifying the distinct structural volumes called Morphologically Homogeneous Units (MHUs). For comparison, we also described a profile in an adjacent area without agricultural use and under natural...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop profile method; Soil structure; Image analysis; Conventional system.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100205
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Energy performance of sugarcane potential ethanol production under different management systems CIGR Journal
Wei, Marcelo Chan Fu; Romanelli, Thiago Libório; Molin, José Paulo.
Crop rotation with leguminous species in sugarcane cultivation is increasing in the southeastern regions of Brazil. Studies on sugarcane ethanol production rely basically at the economic and sustainable points of view overlooking the energy analysis. This study aimed to evaluate the sugarcane ethanol yield under no-tillage and conventional systems with different green manure treatments using a published dataset at the energy point of view. Analysis of energy efficiency was carried out using the indicators: energy balance (EB), energy return over investment (EROI) and Energy Intensity (EI). Energy balance ranged from 129.78 GJ ha-1 to 216.92 GJ ha-1, with no-tillage system presenting the highest values of EB. EROI presented the highest values (334.19,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conventional system; Energy balance; Energy return over investment; Ethanol; No-tillage system.
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5973
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