Aplicação de dejetos da suinocultura em latossolo cultivado com sucessão soja-milho

Abstract

The Organic animal waste, commonly called manure, have been a problem from the beginning of the intensive rearing of pigs . The objective of this study was to evaluate the productivity of soybean and corn sprayed with different doses of pig slurry (DLS). The experiment was conducted in the experimental field IFMT - campus São Vicente da Serra. Treatments consisted of eight rates of swine manure for fertilization in the culture of Maize ( T1 - 0 , T2 - 50 , T3 - 100 , T4 - 150 , T5 - 200 T6 - 250 , T7 - T8 300 - 350 m³ ha - 1 ) and eight doses for fertilization of soybean ( T1 - 0 , T2 - 50 , T3 - 100 , T4 - 150 , T5 - 200 T6 - 250 , T7 - 300 m³ ha-1 and T8 - chemical fertilizer ) . Chemical fertilizer was used as single superphosphate (1600 kg ha-1 ) and potassium chloride (91 kg ha ha-1 ). To determine the yield of corn proceeded to harvest two linear feet of four central lines, corresponding to an area of 7.2 m². The phytotechnical characteristics were evaluated in maize hectolitre weight, thousand grain weight and grain yield. For soybean proceeded to harvest two linear feet of six axis, that corresponded to the area of 5.4 m². The phytotechnical characteristics were the thousand grain weight and yield estimate. The swine manure have the potential to complement the chemical fertilizer in the tested cultures. There were no chemical changes in the soil with just one application of swine manure as fertilizer in corn. In the first application , the dose of 350 m³ ha - 1 DLS , was the highest productivity for corn. After two applications, the dose of 233 m³ ha-1 DLS, was the highest productivity for soybean. For the cultivation of soybeans, after two applications of liquid swine manure, chemical fertilizers gave better productivity than the swine manure.