Soil fertility and productivity of Mombaça grass with the use of solid residues of meat industry

Abstract

It was aimed to evaluate the effect of residual solids in meat industry (RSF) on the production of Panicun Maximus cv. Mombaça and also assess the physical and chemical properties of soil subjected to each level of fertilization. The treatments consisted of increasing doses of waste meat industry: 0, 60, 120 and 180t/ha and analysis of depths (0-10, 10-20 and 20-30cm). The characteristics evaluated were total dry matter (DM), plant height, number of tillers (NP), leaf, stem and dead material. The soils were analyzed at three depths: 0 to 10, 10 to 20, 20 to 30 cm, considering: size, Al, Ca and Mg; potential acidity (Al + H), K, P, pH and calculating the sum of exchangeable bases (SB), cation exchange capacity at pH 7 (CTC) and saturation of bases (base saturation) (V%) and Al (m%). The levels of N, P and K were determined in tissues of forage. From the seven attributes of fertility tested, five showed significant differences for RSF. In relation to production, there was significant response in the application of waste, increasing the values of dry weight, number of tillers and plant height, howing a significant effect in this attribute when considering the increasing doses of the waste, resulting in production of 9.3kg/ha DM of waste applied. The paper concluded that the addition of organic material directly influences the availability of nutrients in surface layers of soil and, consequently, the agronomic characteristics of Mombaça grass.