Growth Response of Soybean Varieties to Trichoderma Application on Acid Soils

Abstract

This study aims to determine the growth response of the vegetative stadia of three soybean varieties which are widely used in East Java on acid soils that have been given biological fertilizers from various Trichoderma isolates. The experiment was arranged factorially using a completely randomized design. The first factor was the variety consisting of Detam 3, Detam 4, Gema, Dering 1, and Burangrang. The second factor was Trichoderma isolates formulated as bio fertilizers, consisting of Tc-Jjr-02, Tc-Pjn-01, and Tc-Jro-01. Overall this experiment has 60 experimental units. Data were analyzed by variance analysis (ANOVA) followed by an honest significant difference test at the level of 5%. The results showed that there was no interaction between soybean varieties and Trichoderma isolates formulated in bio fertilizer. Soybean varieties significantly affected plant height, wet weight, and dry weight of roots and stover at 21 days after planting. The Burangrang variety shows the best growing ability in acid soils. There was no interaction between soybean varieties and Trichoderma bio fertilizers. Trichoderma isolate Tc-Jjr-02 increased the wet weight and dry weight of the roots and roots by 48.2 and 54.5%, respectively, and 38.9 and 48.2% compared to without Trichoderma. Trichoderma application maintains soil acidity between pH 4.50-4.67.

Enhanced Soybean Growth and Damping-off Disease Suppression via Trichoderma asperellum and Liquid Tofu Waste Co-application

“…Even though the interaction effect was not significant for the dry weight of the roots and the weight of the stover (stems and leaves) (Table 5), these two variables proved the role of Trichoderma and the nutrients contained in the tofu liquid waste in increasing the vegetative growth of soybean plants to a critical phase which was the vegetative stage 3 [16] which determines the success of the production phase which is the final phase of the soybean crop. Trichoderma produces nutrients from the decomposition of organic matter [17], compounds that act as plant growth boosters [18]; [19] which contribute nutrients to plant growth and increase plant biomass [20]; [21]. Meanwhile, tofu waste contains macromolecules and crude fiber [22] whose decomposition results in the soil can provide resource support for increased plant growth which will increase plant resistance to pathogen attack.…”