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Revista de Ciências Agrárias

Print version ISSN 0871-018X


MESTAS, R. M. et al. Spatial variability of soil physical and hydrological characteristics in re­lation to the productivity of bean (Phaseolus vulgaris L) irrigated under no-tillage system. Rev. de Ciências Agrárias [online]. 2010, vol.33, n.1, pp.307-313. ISSN 0871-018X.

The spatial variability of a soil used for bean production under an irrigated no-tillage system was studied. This study aimed to evaluate the spatial dependence of soil physical and hydrological characteristics in relation to the spatial variability of the irri­gated bean yield. For that reason, 60 sam­pling points were planted and demarcated in a 3 x 3 m grid. Disturbed samples were col­lected for determining soil density. In the field, soil resistance to penetration and satu­rated hydraulic conductivity were deter­mined. The spatial dependence was ana­lyzed by geostatistics using punctual kriging. According to the results, it is possi­ble to observe that the obtained regressions among maps were significant; soil density and resistance to penetration were nega­tively related to the yield, while the saturated hydraulic conductivity was related positively.

Keywords : precision agriculture; Beans; geostatistics; spatial variability.

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