Doses de trichoderma asperelloides na germinação e vigor de sementes de feijão da cultivar IPR Tuiuiu

Abstract

Trichoderma asperelloides can play a very important role in the seed, preventing the action of pathogens, parasitizing them, degrading the cell wall of harmful fungi and even creating resistance for some plants. From this, the objective was to evaluate the different doses of Trichoderma asperelloides in common bean seeds of the IPR Tuiuiu cultivar, analyzing their impact on germination and vigor. The experiment was conducted at the Federal University of Fronteira Sul – Campus Erechim, where the proposed tests were carried out with 6 treatments and 4 replications. The treatments used consisted of: T1 control, without the use of Trichoderma asperelloides 0 g/ha; T2= 5g/ha; T3= 10g/ha; T4= 15g/ha; T5= 20g/ha and T6= 25g/ha. Germination, germination speed index, seedling length and dry matter weight were evaluated. In the germination test, treatments T3, T4 and T5 were those that presented the highest number of normal seedlings, while the germination speed index was not influenced. Positive effects were seen on the plants' root system, resulting in larger and heavier roots. It is concluded that, in general, the dose of 15 g/ha of Trichoderma asperelloides (T3) has a more positive impact on the germination and vigor of the seeds of the IPR Tuiuiu cultivar.