Importance of bioprotector in growth and yield of soybean plants

Bioprotectors are resistance inducers recently launched on the market for several plant species and may represent an important tool for increasing the productivity of the soybean crop. The present study aimed to identify the effects of H2 Protector in growth and yield of soybean plants. The experiment was carried out in an agricultural production area at Ipameri city with NS 7505 IPRO soybean cultivar in 115 days cycle. The experiment was set up following the randomized block design, three replications and 9m2 plot. To perform the treatments, it was used the commercial product H2 Protector with 300 ml ha-1 concentration and 150 L ha-1 flow rate with addition of mineral oil H2 Citrus. The treatments corresponded to the use of the bioprotector in different phenological stages of the soybean plants in a clinical way or overlapping applications in the previous stage: control, V4, R2, R5, V4+R2, V4+R5, R2+R5 and V4+R2+R5. The application of H2 Protector as bioprotector has biostimulant role in plants cultivated without stress conditions and must be applied with two applications to obtain high yield in soybean plants in V4+R2 or R2+R5 growth stages. The H2 Protector when applied in soybean plants in V4 growth stage increased growth and with a second application in R2 (V4+R2) resulted in higher yield of 17.3% corresponding to 636 kg ha-1 (kg hectare-1). H2 Protector when used in R2+R5 growth stages increase in 18.4% soybean grain yield corresponding to 678 kg ha-1. In this way, the use in two phenological stages becomes economically viable, since the costs represent 10% of the increase in productivity