CONTROLE DE PATÓGENOS EM SEMENTES DE ALGODÃO COM O USO DE Trichoderma harzianum

• Main Author: Silva, José Vinícius Bezerra da
• Publication Date: 2023
• Other Authors: Gomes, Rommel dos Santos Siqueira, Carvalho, Thamires Kelly Nunes, Lacerda, Alecksandra Vieira de, Rodrigues, Rummenigge de Macêdo, Medeiros, José George Ferreira
• Format: Article
• Language: por
• Source: Nativa (Sinop)
• Download full: https://periodicoscientificos.ufmt.br/ojs/index.php/nativa/article/view/13563
• topic: Controle biológico; grandes culturas; patologia de sementes

The objective of the research was to evaluate the efficiency of Trichoderma harzianum on pathogens and on the physiological quality of Gossypium hirsutum seeds. The BRS 416 and Mocó cotton seeds were subjected to the following treatments: control (no treatment), chemical (dicarboximide 240 g. 100 kg-1 of seeds) and biological (T. harzianum 1 x 1010 CFU) at concentrations of 50, 100, 150, 200, 250, 300, 350 and 400 g. 100 kg-1 of seeds. For seed health, the blotter test method was adopted and the physiological quality was determined by germination and vigor. The treatments were arranged in a completely randomized design (CRD). For the health test, the CRD consisted of ten replicates of twenty seeds in each treatment. In the germination tests, the design consisted of four replications of fifty seeds. It was verified a satisfactory effect on the sanitary and physiological quality of cotton seeds, treated with T. harzianum.