Fungus Applications on Growth and Yield of Dena-1 Soybean Varieties

Abstract

This study aims to determine the response of black soybean variety Dena-1 that has been inoculated with Rhyzobium indigenous bacteria to the activity of Trichoderma and Glomus spp fungi given as soil treatment. The experiment was arranged in a completely randomized design with effective fungal application treatment consisting of without application, T. esperellum, Glomus spp., and both types of fungi. All treatments were repeated five times. Observations were made on plant stem height and diameter, dry weight of the stover, number of pods, number of grains, grain weight, and weight of 100 grains. Data were analyzed by ANOVA and HSD test with a significance level of 5%. Trichoderma and Glomus application had no effect in increasing plant growth and production. The simultaneous application of these two fungi resulted in a decrease in dry weight of stover, number of pods, number of grains, grain weight, and weight of 100 soybeans respectively 15.41, 22.50, 30.87, 69.95, and 49.03%. This indicates that there is competition in the use of resources between the root nodule bacteria and the two biological agent fungi.