Fungi of the genus Trichoderma are found naturally in the soil and used as an active ingredient in biofungicides and also have activity as promoters of plant growth. This work aimed to evaluate the efficiency of the product TrichoPlus, containing Trichoderma asperellum as a promoter of soybean plant growth. Four independent experiments were carried out, in different periods between 2019 and 2020. The experiments were conducted in a greenhouse and biomass and nutrient contents were examined. In the first experiment, among the different rates of TrichoPlus tested (3, 4, 5 and 6 g per kg of seeds), the best dose for most of the characteristics evaluated was 5 g per kg of seed. Hence, the inoculation of TrichoPlus at 5 g per kg of seed in the other experiments showed positive results in the accumulation of biomass, nitrogen and phosphorus content. Based on the results of the study the product TrichoPlus, composed of T. asperellum, can be used as an efficient inoculant, for promoting soybean plant growth.
Keywords: Bioinoculant, Fungus, Glycine max (L.) Merrill, Biomass, Nutrients