Uso de diferentes doses de trichoderma harzianum aplicado no substrato na produção de mudas de repolho

Abstract

The production of bedding seedling plants is a highly technical and socioeconomically relevant activity. It is possible to use various types of inputs in production to improve productive performance, among these, the use of growth stimulators, such as Trichoderma, stands out. This fungus is naturally present in soils all over the world and can act in plants as a health inducer, promoting an improvement in resistance to attack by pathogens and insect pests, also acting as a plant growth stimulant, by inducing the synthesis of hormones. This work aimed to evaluate the effect of different doses of Trichoderma harzianum on the quality of cabbage bedding seedlings plants. The research was carried out in the experimental area of the Federal University of Fronteira Sul, Chapecó campus, using the Trichoderma harzianum strain ESALQ-1306, for the production of cabbage seedlings at the doses of: T0 (using only water without Trichoderma concentration), T1 ( 5 mL/L), T2 (10 mL/L), and T3 (15 mL/L) of Trichoderma harzianum strain ESALQ-1306.The analyzed variables were: seedling emergence; shoot height of seedlings; number of leaves per seedling; length of seedling roots; seedling root and shoot dry mass The results obtained were submitted to analysis of variance and regression, in the statistical program Sisvar. For the variables seedling emergence, plant height, root length, shoot dry mass and root dry mass, there were no significant differences between treatments. However, for the variable number of leaves at 35 DAS (days after sowing) T0 was higher than T3, differing statistically. Thus, it is possible to conclude that the use of Trichoderma harzianum strain ESALQ-1306, applied to the substrate, at the doses tested in this research, did not provide gains in seedling emergence, plant height, root length, shoot dry mass and dry mass of cabbage bedding plants of the cultivar Coração de Boi.