EFFECT OF THE DISPOSITION OF CATTLE REARING RFFLUENTS IN THE SOIL AND PLANT BIOMASS
DOI:
https://doi.org/10.13083/reveng.v25i4.783Keywords:
nutrientes, DQO, massa seca, reúso agrícolaAbstract
The objective of this study was to determine the characteristics of percolate in different soil depths derived from the application of livestock wastewater (LWW), and assess the growth of Brachiaria pasture by analysis of forage plant mass. The pH values of percolate ranged from 5.2 to 7.0, without showing any tendency of increasing or decreasing in function of depth. The result of the chemical oxygen demand (COD) showed the lowest value (120 mg L–1), while the concentrations in other points ranged from 150 to 240 mg L–1 COD. The values of total dry matter (TDM) of the forage varied along the monitoring period and the distance of the LWW launch terrace. The control plot presented average value of 133.1 g TDM and plot 4 an average of 753.29 g, which showed a significant increase in TDM production of the pasture. There was improvement in soil fertility with the increase in pH, P, K, S, Ca, Mg, MO, V, and CEC. The infiltration-percolation system was promising as an alternative to the LWW availability in the soil and increased TDM in pasture cultivated with Brachiaria.Downloads
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