SILVA, T. E. G.; Tainá Eponina Gomes da; SILVA, Tainá Eponina Gomes da.
Résumé:
Melon (Cucumis melo L.) is a plant whose fruits have great economic and social importance
in Brazil. Among the factors that limit the achievement of high yields in melon cultivation in
Brazil are diseases. Most pathogens are transmitted through seeds and the use of formulas
based on Trichoderma spp. has been widely studied, because the fungus is used as a biocontrol
agent and to promote plant growth, due to its mechanisms of action. The objective was to
determine the efficiency of using Trichoderma harzianum for the microbiolization of melon
seeds in different concentrations, aiming to establish biological control of fungi. For the
health test, the treatments used were the control, chemical treatment and Trichoderma harzianum at concentrations of 50g, 100g, 150g and 200g of Trichoderma harzianum / 100kg of
seeds at a concentration of 1.0 x 1010. In the germination test, they used the same health
treatments were used, evaluating the percentage of germination, dead and hard seeds and seedling length. The treatments were distributed in a completely randomized design. The data
were subjected to analysis of variance. Regression analysis was performed for quantitative
data with the significance of the models verified by the F test. The following fungi were identified in the seeds: Alternaria sp., Aspergillus sp., Fusarium sp. and Penicillium sp. Dosages of
50, 100, 150 and 200g of Trichoderma harzianum/100kg seeds at a concentration of 1.0 x
1010 were efficient in reducing the fungi Alternaria sp., Aspergillus sp., Fusarium sp. and
Penicillium sp. The dosage of 150g of Trichoderma harzianum/100kg seeds at a concentration of 1.0 x 1010 was efficient in the physiological development of melon seeds (Cucumis melo L.).
