Bioatividade do extrato do fungo pycnoporus sanguineus no contole da praga mosca branca em plantações de couve-de-folhas.

Abstract

The objective of the present study was to evaluate the effect of the crude extract obtained from the fungus Pycnoporus sanguineus using aqueous and ethanolic solvent in a control action of the Bemisia tabaci (Gennadius) whitefly attacking smallholder cabbage in the municipality of Parintins (AM). The effect of the spray of the extracts and the technique of soaking the filter paper on the whitefly mortality, the alcohol extract showed higher efficiency in the mortality of the whitefly, in the tested concentration presented a greater toxicity to the whitefly, while that the aqueous extract had low toxicity on animal mortality. The spraying method had more effect on the insecticidal action than the method of filter paper soaking.