FERTILIZATION WITH SWINE WASTE MANURE : THE INFLUENCE OF CHEMICAL CHARACTERISTICS IN Brachiaria decumbens AND CHANGES IN THE SOIL

摘要

The objective of this study was to evaluate the qualitative characteristics of Brachiaria decumbens pastures fertilized with swine manure, as well as evaluating the changes that the utilization of manure causes in some soil chemical properties. The design was randomized blocks with six treatments: T1: absence of mineral and organic fertilizer (control), T2: with mineral fertilizer only, T3, T4 and T5 with different doses of swine slurry (respectively equivalent to 60, 120 and 180 m(3) ha(-1)), T6 organic and mineral mixed treatment (120 m(3) per hectare) of swine slurry added with mineral fertilizer). It was observed that there was an increase in productivity dry matter (DM). The use of swine manure resulted in significant increase in crude protein values of Brachiaria decumbens plants, do not having the same efficiency for Neutral detergent Fiber (NDF), Acid detergent Fiber (ADF) and lignin. The application of manure increased the content of N, P, Ca, Mg in Brachiaria decumbens plants. No changes were observed when comparing the values of pH and soil organic matter. Liquid swine manure can be used to provide macronutrients for the fodder, since with controlled application.