Selection of antagonists for the biological control of Botrytis cinerea in tomato grown under protected cultivation
Abstract
The isolates were obtained from vegetal tissue, phylloplane-rhyzoplane of tomato and soil in the growing region of Rio Grande do Sul. “In vitro” tests were based in the method of paired crops culture, in the production of volatile compounds and growth in culture media containing fungicide. “In vivo” tests measured the efficiency of the two most efficient isolates selected by “in vitro” experiments through the evaluation of the incidence of Botrytis cinerea in tomato flowers under different forms of application. Gliocadium viride led to a 62% reduction and was considered a promising alternative for the biological control of B. cinerea. This result was similar to that obtained through the test of paired crops ran under laboratory conditions. In this test, the efficiency of G. viride was 58.14%. Trichoderma harzianum did not differ significantly from the control treatment.
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