Avaliação de Trichoderma sp., isolado de fruto de abacaxi, no controle de fitopatógenos in vitro

Abstract

The pineapple crop has become important in fruit production, by the quality of the fruits that guarantee you a consumption worldwide. The diseases considered mostimportant in pineapple cultivation are: Fusariosis (Fusarium subglutinans),pineapple “black rot disease”Chalara (Thielavipsis) paradoxaand pineapple“rot roots” (Phytophthoracinnamomi). The control of fusariosis on the fruit has shown a very hard practice. In this way, biological fungicides are attractive to commercial agriculture, and filamentous fungi belonging to Trichodermasp. genus has been used because of its antagonistic capacity, being able to inhibit plant pathogens through competition, parasitism direct, production of metabolites and microparasitism. This study aimed to determine the effectiveness of an isolate fromTrichodermasp. in the control of plant pathogens Aspergillussp. and Sclerotium rolfsii, in vitro, and forthis it was used the direct pairing methodology. According to the results, it was observed thetested isolate from Trichoderma sp. has shown to be a viable antagonist for control of Aspergillus sp., and Sclerotinum rolfsii, because it reduced the in vitro mycelial growth of pathogens.