出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The objective of this study was to evaluate the residual effect of adding basaltic rock powder associated or not with chemical fertilization on the chemical attributes of the soil and the productivity of the soybean crop. The experimental design was randomized blocks in a factorial scheme (5x2), testing five doses of rock dust (0; 2.5; 5.0; 7.5 and 10.0 Mg ha-1), with or without fertilization. NPK chemistry in formulation 05-25-06, with four replications. The experiment was carried out under field conditions. The agronomic characteristics of the final height of plants, the height of the insertion of the first vegetable, the diameter of the collection, the weight of 1000 grains, soybean products, and the chemical attributes of the soil were evaluated. Chemical fertilization influenced the levels of nutrients P, K, and Mn in the soil. In the 0-10 cm layer, there was an increase in the levels of P and K. In the 10-20 cm layer; the Mn content was reduced. The residual application of the doses of basalt powder caused the reduction of leaf concentrations of P, Cu, Zn. The complementary chemical fertilization favored the reduction of leaf Mg concentration. Plant height, stem diameter, grain weight, and productivity were higher in treatments that received chemical fertilization. The minor release of nutrients from the basalt powder indicates that such material cannot be used as the primary source of nutrients for plants.
