Atributos químicos de um Neossolo Quartzarênico sob capimmarandu adubado com resíduo líquido de frigorífico

Abstract

ResumoEste experimento foi realizado com o objetivo de avaliar o efeito da aplicação de resíduo líquido de frigorífico (RLF) sobre as características químicas de um Neossolo Quartzarênico Órtico típico sob pastagem de capim-Marandu. Foram aplicadas quatro doses de RLF (0; 37,5; 75; 112,5 m³ ha AbstractThis study was conducted to evaluate the effect of liquid waste of bovine slaughter (RLF) on the chemical characteristics of a Entisol under pasture grass Marandu. We applied four levels of RLF (0, 37.5, 75, 112.5 m³ ha ). We calculated the saturation of exchangeable bases (V%) and aluminum (m%). The applications of RLF in doses of 75 and 112.5 m³ ha -1 reduced the pH and level of Al 3+. We observed increased of the value the V% at 0-10 cm and CTC effective in 10-20 cm. The organic matter content had no significant increases for the implementation of RLF. The Mg 2+ increased in the 30-40 cm layer at 112.5 m³ ha -1. The results suggest that application of 37.5 m³ ha -1 increases the pH and Ca 2+ and K + at a depth of 0-10 cm and the value of CTC pH7,0 to 30 cm. The pH, total bases, CTC, CTC pH 7,0 , saturation on base, K + , Ca 2+ , Mg2+ were influenced by the depth with higher values in the 0-10 cm depth compared with other in all the treatments.