Abstract

LOPEZ-SANTOS, Armando; GONZALEZ-CERVANTES, Guillermo; CADENA-ZAPATA, Martín  and  GONZALEZ-BARRIOS, José Luis. Effect of tillage on the porosity of clay grassland soil estimated by means of an analysis of digital images. Rev. Chapingo ser. cienc. for. ambient [online]. 2011, vol.17, n.spe, pp.33-43. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2010.08.055.

Primary tillage has been evaluated from different points of view. It is known that tillage provokes changes in soil porosity, and the processes associated with it. However, there are still questions about the size of its impact. Therefore, between 2006 and 2007 this research was carried out, focusing on the measurement and comparison of soil porosity in grassland turned into agricultural land, using an advanced imaging technique in rancho Los Angeles, Saltillo, Coahuila, Mexico (25° 6,650' N, 100° 59,413' O) where the climate is BWhw (x') (e) and soils are clayey (Feozem Luvic, Hl). The effect of tillage using disk plow (LAD) and tillage using multi-plow (LM), were compared with undisturbed soil (NL). Results indicated changes in size and shape of the pores. It was observed that treatment with vertical tillage using multi-plow shows a decrease in porosity in three diameter ranges: T3 (with pores less than 2 mm²), T4 (with pores of 0.1 to 2 mm²) and T6 (with pores smaller than 0.02 mm²).

Keywords : Tillage with disk plow; multi-plow; soil porosity.

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