Resumen

SILVA, Pedro Luan Ferreira da et al. Integrated crop-livestock systems: effects on the physical quality of analbaqualfs in the brazilian semiarid. Cienc. suelo [online]. 2021, vol.39, n.2, pp.106-121. ISSN 1850-2067.

The soils of the Brazilian semi-arid are under a constant process of degradation and sustainable agricultural production strategies must be adopted in order to alleviate this problem. Therefore, the objective of this work was to evaluate the physical-water behavior of an Albaqualfs four years after the implantation of crop-livestock-forest integration systems in the Brazilian semiarid. The experiment was installed in the county of Alagoinha, PB, in an Albaqualfs with a sandy-loam texture. Five integration systems in randomized block design (DBC) with four replications were evaluated: i) Purple Ipe (Tabebuia impetiginosa) + Brachiaria decumbens (iPF1); ii) Gliricidia (Gliricidia sepium) + Urochloa decumbens (iPF2); iii) Sabiá (Mimosa caesalpiniifolia) + Urochloa decumbens (iPF3); iv) Maize (Zea mays) + Urochloa decumbens (iLP); v) Urochloa decumbens (pasture). The data submitted to analysis of variance and Tukey's test (p<0.05) demonstrated that the crop-livestock-forest integrated system, after the period of four years, has not yet promoted significant physical improvement of the attributes of the Albaqualfs under study, however, an attribute such as the S index, presented satisfactory values. Regarding the condition prior to the implantation of the systems, there is a positive change in the structure, reflecting in the reduction of the bulk density of the soil and an increase in the total porosity.

Palabras clave : Water retention curve; available water; S index; soil physical quality.

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