USO DE FERTILIZANTES ORGANOMINERAIS ASSOCIADOS À PLANTAS DE COBERTURA NA CULTURA DO MILHO

Abstract

Phosphorus is essential for plant metabolism, participating in energy transfer, photosynthesis, and rooting. In the Cerrado, its availability is limited by fixation in iron and aluminum oxides. The objective of this research was to evaluate the effects of using organomineral phosphate fertilizers associated with cover crop management in corn, aiming to increase grain yield and the sustainability of the agricultural system. The experiment was set up in a randomized complete block design with four replications. The treatments were arranged in split-plots, with the plots consisting of the intercropped cover crops; 1. MS: single corn; 2. MUR: Corn + Urochloa ruziziensis; 3. MC: Corn + Crotalaria spectabilis; 4. MUC: Corn + Urochloa ruziziensis + Crotalaria spectabilis; the subplot consisted of organomineral fertilizers. The use of the organomineral fertilizer ORG2 resulted in higher grain productivity in the corn+crotalaria spectabilis intercropping system.