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Sugarcane Root Development and Yield under Different Soil Tillage Practices

Emmerson Rodrigues de Moraes, José Geraldo Mageste, Regina Maria Quintão Lana, José Luiz Rodrigues Torres, Luis Augusto da Silva Domingues, Ernane Miranda Lemes, [...]


ABSTRACT New strategies for sugarcane production have been very important since the incorporation of ethanol in the Brazilian energy mix in the early 1970s. Prior to planting sugarcane, the soil is prepared, and this process can affect root development and, consequently, sugarcane production. This study was conducted in an area of sugarcane crop renewal in the Cerrado biome (Brazilian tropical savanna), with the objective of identifying which tillage system generates the better root development and improved yield in sugarcane. The […]

Performance of Flooded Rice Grown in Succession to Winter Cover Crops

Silmara da Luz Correia, Paulo Regis Ferreira da Silva, Madalena Boeni, Christian Bredemeier, Ibanor Anghinoni, Guilherme Batista Menegati, [...]


ABSTRACT: Mean grain yield of flooded rice in southern Brazil has increased in recent years due to the use of high-yield cultivars and improvement of crop management practices. Nevertheless, stagnation in grain yields has been observed in some rice-producing regions. Adoption of conservation tillage systems based on cover crops may be a strategy to increase rice grain yield potential. The objective of the present study was to evaluate the effect of winter cover crops on initial establishment, development, and grain […]

Land Use and Changes in Soil Morphology and Physical-Chemical Properties in Southern Amazon

Vander Freitas Melo, Alessandro Góis Orrutéa, Antônio Carlos Vargas Motta, Samara Alves Testoni


ABSTRACT Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense native forest (NF) was split into four areas of 1.0 ha each. Three areas were slashed and burned and then cultivated for 11 years with coffee (CO), secondary forest […]

Analysis of Potential for Linear Erosion in the Cerrado Biome Using Morphopedology

Deyvid Diego Carvalho Maranhão, Oscar Ivan de Oro Aguado, Marcos Gervasio Pereira, Adelson Paulo Araújo, Selma Simões de Castro, Laerte Guimarães Ferreira


ABSTRACT The Cerrado is a vegetation complex with a wide variety of phytophysiognomies, and sustainable management is essential for maintaining biodiversity. Morphopedology is a tool that can assist in developing plans for control of soil and land use, especially in evaluating the potential of soil erosion processes. This technique allows landscape units considered “homogeneous” to be distinguished, as a result of interaction between physiographic conditions. The aim of this study was to evaluate potential for erosion in São Miguel do […]

Characteristics of Soils in Highland Wetlands as a Subsidy to Identifying and Setting their Limits

Maria Tereza Warmling, Jackson Adriano Albuquerque, Jaime Antonio de Almeida, Maria Izabel Warmling


ABSTRACT Palustrine areas and wetlands in particular are fragile ecosystems, with high biodiversity and high ecological productivity, and they provide benefits to society. The aim of this study was to describe and classify the main soils occurring in the wetlands of the Southern Plateau of Santa Catarina, and propose criteria for identification of hydromorphic environments as an aid in demarcation of their boundaries. Soils of four wetlands, in the municipalities of Bom Jardim da Serra, Bom Retiro, Lages, and Painel […]