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Type: Artigo de periódico
Title: Chemical attributes and carbon stocks in an Oxisol under no-tillage in savannah of Piaui state
Author: Leite, LFC
Galvao, SRS
Neto, MRH
Araujo, FS
Iwata, BF
Abstract: No-tillage adoption has been considered a viable alternative for sustainable soil use. This work aimed to evaluate the influence of no-tillage system with different times of adoption and conventional tillage on chemical attributes and carbon stocks in an Oxisol of the savannah of Piaui in Northeastern Brazil. Soil samples in the 0-5, 5-10, 10-20 and 20-40 cm layers were collected in conventional tillage (CT) no-tillage (NT) with 2 (NT2), 4 (NT4) and 6 (NT6) years of adoption and native forest (NF). The following chemical properties were evaluated: pH, extractable P, exchangeable cations, Al, potential acidity (H + Al), total organic carbon (TOC) and microbial biomass carbon (C-mic). NT adoption increased pH, extractable P and exchangeable cations contents. Compared to conventional tillage, TOC and C mic stocks increased 34 and 99% (NT2), 47 and 92% (NT4) and 61 and 108% (NT6), respectively, in the superficial layer (0-20 cm). No-tillage adoption improves chemical attributes and increases total organic carbon and microbial carbon and its continuous use contributes to soil quality in savannah soils of Piaui state.
Subject: soil tillage system
soil fertility
microbial biomass carbon
Glycine max L.
Country: Brasil
Editor: Univ Fed Paraiba Ccsa
Citation: Revista Brasileira De Engenharia Agricola E Ambiental. Univ Fed Paraiba Ccsa, v. 14, n. 12, n. 1273, n. 1280, 2010.
Rights: aberto
Identifier DOI: 10.1590/S1415-43662010001200004
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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