Fungos micorrízicos arbusculares mitigando o estresse de fósforo na produtividade do feijoeiro comum

Abstract

Phosphate fertilization in tropical soil is one of the challenges in the nutritional management of beans. This challenge is related to the variation in the price paid for phosphate fertilizer, which is linked to fluctuations in the selling price of beans. Therefore, it is important to create an alternative to improve efficiency in the use of phosphorus. The research hypothesis is that the inoculation of arbuscular mycorrhizal fungi promotes phosphorus absorption in the bean plant. The objective of this proposal is to investigate the mitigation of P-stress in the presence of AMF and its effects on bean productivity. The experiment was implemented in a randomized block design, in a 2x2 factorial scheme with four replications: the first-factor P-stress (-P= 150 mg kg P and +P= 300 mg kg P) x second-factor arbuscular mycorrhizal fungi (AMF) (+AMF = presence and -AMF = absence). During the research, pigment content, flowering, and productivity were evaluated. It is concluded from the research that regardless of P-stress and P-control, inoculation with arbuscular mycorrhizal fungi increased the dry mass of leaves, branches, and P content in the soil and plant, flowers, pods, and bean productivity. Keywords: Food security; fertilizers and arbuscular