The objective was to evaluate, in laboratory, at 26°C, UR 60±10% and 12 hours photophase, the influence of herbicide metribuzin 480 SC, the chemical insecticide carbaryl 480 SC, the entomophatogen Metarhizium anisopliae (Metsch) Sorokin and emulsionable neem oil, Azadirachta indica A. Juss, on the parasitism, emergency and longevity of Trichogramma galloi Zucchi, 1988, reared in eggs of Diatraea saccharalis (Fabricius, 1794). The bioassay was conducted using one hundred postures, from laboratory rearing, in the 24 hours after oviposition, which were treated by immersion and offered to the natural enemies. The experimental design was entirely randomized with ten treatments and ten repetitions. The parasitism was harmed by neem in the concentrations (0.33, 0.53 and 1%), followed for carbaryl 4%, metribuzim 2.14% and M. anisopliae (IPA 159E) 0.4%. The emergency of the parasitoid was reduced for the treatments: carbaryl, M. anisopliae (IPA 159E) and metribuzim, and the longevity for metribuzim and M. anisopliae (IPA 159E) with an average variation lower that 24 hours.
Phytossanitary product; sugarcane borer; Trichogramma; Metarhizium anisopliae
