EFEITO DE CURTO PRAZO DO CALCÁRIO INCORPORADO OU APLICADO EM SUPERFÍCIE ASSOCIADO A SUPERFOSFATO SIMPLES

Abstract

Improving the soil profile quality as well as its fertility is paramount for increasing crop productivity. The study was developed to evaluate responses in soybean productivity and soil fertility, performing the liming application associated with phosphate fertilization, and using two soil management, with and without incorporation. The experiment was carried out in the city of Jataí - GO. A randomized block design was used, arranged in a 3x2x2 factorial scheme, with 4 replications and 12 treatments, being: two limestone levels (0 and 4 t ha-1), two tillage of the soil (with and without tillage) and two phosphate levels fertilization in the form of Simple Superphosphate (SSP) (0 kg/ha-1 and 115 kg ha-1). The soybean cultivar ST721 IPRO was sown 78 days after the treatment’s application. The soil was sampled and analyzed 49 days after. It was also evaluated the productive parameters of the culture. The liming with phosphate fertilization association, using SSP, did not decrease the P availability in the soil, along with the limestone application also favored increasing in nutrients levels in treatments that did not limestone application has direct action with the P availability.