Resumo

DOMINGUEZ-VENTO, Calixto et al. Influence of Conservation Agriculture on Physical-Chemical Properties of Soil under Irrigated Rice Cultivation. Rev Cie Téc Agr [online]. 2020, vol.29, n.3, pp.75-83.  Epub 01-Set-2020. ISSN 2071-0054.

Empirical and scientific evidence from different parts of the world has determined that the concepts and principles of Conservation Agriculture (CA) are universally valid. However, in irrigated rice cultivation, there are still few studies carried out and there is significant variability in the information on its effect on the soil and the agricultural yield of the crop, depending on the type of soil. The objective of this work was to evaluate the effect of CA on some physical and chemical properties of a Gleysol Ferruginous nodular soil dedicated to the cultivation of irrigated rice. The research was conducted in an area of ​​2.63 ha in which the three basic principles of the CA were implemented. The results show that, after four cycles of planting under the CA, an increase in organic matter from 2,41 to 3,66 % occurs with respect to the base line. In addition, the total porosity was increased in 9,51 %, the apparent density decreased to 4,0 g.cm-3 and the penetration resistance was reduced from 4,29 to 3,01 MPa, showing the favorable effect of CA on the soil.

Palavras-chave : zero tillage; organic matter; soil bulk density.

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