Minimum tillage is the recommended system for Brachiaria brizantha introduction in Oxisol in the Amazon

• Autor(a) principal: Rodrigues, Marcos
• Data de Publicação: 2018
• Outros Autores: Rabêlo, Flávio Henrique Silveira, de Castro, Heber Augusto, Roboredo, Delmonte, de Carvalho, Marco Antonio Camillo, Roque, Cassiano Garcia
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/2808
• topic: Brachiaria brizantha; Compaction; Soil density; Impact penetrometer; Soil moisture; Brachiaria brizantha; Compactação; Densidade do solo; Penetrômetro de impacto; Umidade do solo

Soils with low levels of organic matter and high compaction limit agricultural productivity and may compromise the sustainability of ecosystems (e.g., Amazonian). Only few studies show the effect of land use and soil management systems in the Amazon region, which hinders the understanding of this effect on this ecosystem. Therefore, the objective was to evaluate the effect of land use and soil management systems on physical attributes and on the carbon stock of an Oxisol in the Amazon. Evaluations were performed at 0-10, 10-20, 20-30 and 30-40 cm of soil subjected to the use and management systems: minimum tillage, conventional tillage, native pasture and native forest. The highest densities were observed in the soil area of Brachiaria brizantha implanted after conventional tillage and native pasture area. The highest levels of total organic carbon and the largest stocks of carbon in the soil were found in forest area, and B. brizantha was established after minimum tillage, at 0-10 cm depth. Therefore, the minimum tillage is the most indicated land use and soil management system to introduce B. brizantha in the Amazon.