Desempenho produtivo do feijoeiro comum influenciado pela associação de fosfatos e inoculação com Bacillus sp.

Abstract

P is one of the nutrients that most limit bean production, especially in soils with low fertility, such as those in the Cerrado. Therefore, studies are needed to identify P supply management that minimize the dependence on soluble phosphates, which, in addition to being

2 costly to obtain, have a low residual effect. This study aims to evaluate the productive performance of common bean in response to isolated or associated application of a natural and soluble source of P, in the presence and absence of inoculation with Bacillus sp. An experiment was conducted under field conditions, in the experimental area of the Federal University of Mato Grosso do Sul, in the municipality of Chapadão do Sul – MS, in Red Latossol. A randomized block design with five replications in a strip scheme was used. The first factor consisted of the presence or absence of solubilizing microorganisms, while the second factor consisted of the different sources of P2O5 applied. The treatments were: T1 (control – without P application), T2 (100 kg P2O5 ha-1 – super simple – (SS), T3 (4 t ha-1 of natural phosphate - FN) and T4 (100 kg P2O5 ha-1 of SS + 4 t ha-1 of FN (total P2O5 = 6.068%). Plant height, height of first pod insertion, relative chlorophyll index, number of pods per plant and number of grains per pod were evaluated. the number of grains of all pods; mass of one hundred grains and grain yield. The association of a soluble source of P with the inoculation of BiomaP promotes a greater number of pods per plant, but without effects on grain yield. of soluble phosphate with natural phosphate sources, enhances the use of natural sources, improving the characteristics related to the productive performance of plants when compared to their isolated uses.