CALCÁRIO CONVENCIONAL E NANOPARTICULADO PARA CORREÇÃO DE SOLO E PRODUTIVIDADE E QUALIDADE DE MILHO PARA SILAGEM EM DIFERENTES CULTIVOS COM SOJA EM SUCESSÃO

Abstract

The objective of this study was to evaluate the chemical/nutritional properties of soils cultivated with single corn and corn intercropped with Panicum maximum BRS Zuri, in addition to the productivity and silage quality under different combinations of conventional and nanoparticle limestone, with soybeans in succession. Two simultaneous experiments were conducted, one growing single corn and the other corn intercropped with the forage BRS Zuri. In both experiments, the treatments were: T1: No correction, T2: 100% conventional corrector, T3: 100% nanoparticulate corrector, T4: 50% conventional and 50% nanoparticle, T5: 75% conventional and 25% nanoparticle and T6: 75 % nanoparticulate and 25% conventional. The productivity and quality of silage in single and intercropped corn, grass productivity and monitoring of soil fertility were evaluated, through analyzes carried out at 45 days and 90 after application, at the corn harvest and between harvests for planting the soybeans and soybean harvest. For soybeans, productivity, number of pods per plant, number of grains per pod and weight of 1,000 grains were evaluated. The results obtained demonstrate a greater corrective effect on potential acidity, active acidity, Al content and Al saturation for soils corrected with the combination of correctives (T4, T5 and T6), being equivalent to (T2). These same treatments provided an increase in pH and Base Saturation, Ca and Mg content, and Ca and Mg availability. The amendments had a more intense effect on the surface layers of the soil (0-20 cm). Cultures are directly influenced using concealer, and the type of concealer used. The combinations of nanoparticle amendments with conventional amendment and the exclusive dose of conventional amendment deliver the best results in productivity and soil fertility. The need to replace nutrients after crop extraction is evident.