RENDIMENTO E VIABILIDADE DE SOJA EM DIFERENTES DOSES DE FÓSFORO ASSOCIADO A MICRORGANISMOS SOLUBILIZADORES DE FÓSFORO

Abstract

Phosphorus (P) is an essential nutrient for plants, being one of the main elements for food production, however, part of the total added to the soil becomes unavailable to plants. The addition of phosphate-solubilizing bacteria has been identified as a viable way to increase the availability of P adsorbed in the soil to plants and promote plant growth. The objective of the experiment was to evaluate the responses of soybeans subjected to different dosages of phosphorus, associated or not, with the BioNitroPhos® solubilizer. A randomized block design was used, with 4 replications. Tested 8 treatments, with T1 being the control without phosphorus application, T2 with 60 kg ha-1 of P2O5, T3 with 120 kg ha-1 of P2O5, T4 with 180 kg ha-1 of P2O5, T5 with 60 kg ha-1 of P2O5 + BioNitroPhos®, T6 with 120 kg ha-1 of P2O5 + BioNitroPhos®, T7 with 180 kg ha-1 of P2O5 + BioNitroPhos® and T8 BioNitroPhos®. The soybean crop responds in terms of grain yield to phosphate fertilizer and the use of phosphorus-solubilizing bacteria. The 180 kg ha-1 of P2O5 + BioNitroPhos® promoted greater economic return.