Phosphate fertilization in sequeiro rice cropping

Abstract

Rice farming has great importance in Brazil and around the world as the grain is a vital source of carbohydrates, proteins, vitamins and minerals. With an increasing productive demand, there is need to search for sustainable and more efficient means of production. A promising alternative is fertilization with organomineral fertilizers, however, its application and efficiency is little explored by the literature. The objective of the study was to evaluate the effect of varying doses of phosphorus (P) from organomineral fertilizer on the productivity and nutritional status of rice plants. The design was completely randomized with 3 replications. The rice plants were treated with doses of 0, 75, 150 and 225 kg/ha of P2O5 from organic-mineral fertilizer and doses of 75 and 150 kg/ha of P2O5 from high solubility mineral fertilizer. The macro and micronutrient contents of fresh grain mass, total dry grain mass, dry grain mass and mass of 100 grains of rice were evaluated. The organomineral phosphate fertilizer showed similar behaviour to the high-solubility mineral fertilizer.