Publicação: Condutividade hidráulica e resistência à penetraçao do solo influenciada por diferentes sistemas de manejo
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Data
2006-12-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
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Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Soil management measures that increase the efficiency of organic matter cycling and maintain favorable soil structure are needed for improving soil quality. On the other hand, soil structure degradation due to inadequate soil management systems is widespread. Among the indicators of soil physical quality, saturated hydraulic conductivity and penetration resistance are thought to be sensitive to soil management system. The aim of this work was to study the influence of soil tillage system and organic fertilization on selected soil physical properties after the first year of treatment. The field work was conducted in Selviria, MS, Brazil on an Oxisol. The experimental design was randomized complete blocks with split-plots, with 12 treatments and 4 repetitions. Tillage treatments included conventional ploughing (CT) and direct drilling (DD). Fertilizer treatments were: 1) manure, 2) manure plus mineral, 3) traditional mineral 4) plant residues of Crotalaria juncea, 5) plant residues of Pennisetum americanum and 6) control plot. The plots were cropped to bean in winter and to cotton in summer, and both cultures were irrigated. After one year no significant differences between treatments in mechanical resistance and porosity were found. However, saturated hydraulic conductivity and infiltration were higher in the conventional tillage treatment at the 0.00-0.10 m depth. Moreover, an improvement in soil physical condition by organic fertilizers was shown.
Descrição
Palavras-chave
Conventional tillage, Cover crops, Hydraulic conductivity, No-tillage, Organic manure, Penetration resistance, fertilizer application, infiltration, manure, soil management, soil organic matter, soil structure, zero tillage, Brazil, South America, Crotalaria juncea, Gossypium hirsutum, Pennisetum glaucum
Idioma
Espanhol
Como citar
Cadernos do Laboratorio Xeoloxico de Laxe, n. 31, p. 29-42, 2006.
