Abstract

SILVA, Pedro Luan Ferreira da et al. Different management systems in the physical-hydric quality of a vertisol under the domain of the brazilian semiarid. Cienc. suelo [online]. 2021, vol.39, n.2, pp.146-156. ISSN 1850-2067.

The objective of this work was to verify the effect of different management systems on the physical-hydric quality of a Vertisol located in the climatic domain of the Brazilian Semiarid. The treatments were composed by the following management systems: (S1) Pasture (Cynodon spp.) With 4 years; (S2) Pomegranate (Punicata granatum L.) aged 6; (S3) Forage sorghum (Sorghum bicolor L.) aged 4 years and (S4) native vegetation. The soil water retention curve, soil density, porosity of soil (macro, microporosity and, total porosity), soil aeration capacity and free air porosity. The data were analyzed using multivariate statistics. The results demonstrate that the Vertisol presents high retention and low availability of water to the plants. Better structural quality was observed in the soil under native forest. It is concluded that the management systems composed of pasture and sorghum are promoting negative changes to the soil structure, with a reduction of macroporosity and of the aeration capacity of the soil.

Keywords : Available water; expansive clay; soil quality.

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