Mitigação do déficit hídrico em plantas de soja tratadas com o Bioprotetor H2 Protector

Abstract

Research efforts are underway to find suitable approaches to integrate water deficit tolerance strategies in plants, which would eventually help them to suppress the negative effects caused by water shortages. In this way, the use of biostimulant and/or bioprotective products can represent an important tool in mitigating the water deficit and increasing the productivity of the soybean crop. Based on this assumption, the present study was carried out with the objective of identifying the effect of the bioprotector H2 Protector in the mitigation of water deficit in soybean plants. For this investigation, an experiment was conducted between November 2021 and January 2022 in a greenhouse, located at the State University of Goiás, Ipameri unit. A completely randomized design was used in a 2 x 5 factorial scheme with three replications, in which the first factor refers to the presence or absence of the commercial product H2 Protector and the second factor refers to the water levels applied to the plants (25%, 50%, 75%, 100% and 125% of the daily evapotranspiration). At 60 and 90 days after emergence, the morphological variables and agronomic components of the crop were analyzed. The product H2 Protector showed significant interaction only for the variables plant height and transpiration rate, in relation to water deficit. The application of the fertilizer H2 Protector, in its entirety, did not attenuate the damage caused by the water deficit. However, the application of H2 Protector may favor the vegetative stage of soybean. Soybean susceptibility to water deficit was evident, mainly plant development and crop production aspects, which were considerably affected by water regimes.