Aeration condition of a clayey oxisol under long- term no-tillage Report as inadecuate




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Cássio Antônio Tormena ; Wagner Henrique Moreira ; Bruce C. Ball ; Getulio Coutinho Figueiredo ; Álvaro Pires da Silva ; Neyde Fabíola Balarezo Giarola ;Revista Brasileira de Ciência do Solo 2014, 38 3

Author: Edner Betioli Junior

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Revista Brasileira de Ciência do Solo ISSN: 0100-0683 revista@sbcs.org.br Sociedade Brasileira de Ciência do Solo Brasil Betioli Junior, Edner; Tormena, Cássio Antônio; Moreira, Wagner Henrique; Ball, Bruce C.; Coutinho Figueiredo, Getulio; Pires da Silva, Álvaro; Balarezo Giarola, Neyde Fabíola AERATION CONDITION OF A CLAYEY OXISOL UNDER LONG- TERM NO-TILLAGE Revista Brasileira de Ciência do Solo, vol.
38, núm.
3, 2014, pp.
990-999 Sociedade Brasileira de Ciência do Solo Viçosa, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=180231349025 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative 990 Edner Betioli Junior et al. AERATION CONDITION OF A CLAYEY OXISOL UNDER LONGTERM NO-TILLAGE (1) Edner Betioli Junior(2), Cássio Antônio Tormena(3), Wagner Henrique Moreira(2), Bruce C. Ball (4), Getulio Coutinho Figueiredo(5), Álvaro Pires da Silva (6) & Neyde Fabíola Balarezo Giarola(7) SUMMARY The hypothesis of this study was that the absence of soil tillage in long-term no-tillage (NT) systems can be detrimental to soil aeration.
The objective was to assess the aeration condition of an Oxisol (Rhodic Ferrasol), very clayey texture (750 g kg-1 of clay; 200 g kg-1 of sand), after 30 years of cultivation under NT.
The physical property soil air permeability (Ka) is sensitive to changes in the soil pore system.
Aside from Ka, the air-filled porosity (Ɛ a) and indices of pore continuity (K1 and N), derived from the relationship between Ka and Ɛ a, were used as indices of soil aeration.
From the soil layers 0.0-0.1 and 0.1-0.2 m, 240 undisturbed samples were collected along a transect perpendicular to the crop rows, at three sampling positions: corn plant row (CR); center of the interrow (INT); and the equidistant p...





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