Selectivity of phytosanitary products used in organic farming on adult of Cryptolaemus montrouzieri (Coleoptera, Coccinellidae) under laboratory conditions

Fábio Stoffel Efrom, CaioRodrigues Redaelli, LuizaNarciso Meirelles, RafaelBernardes Ourique, Cláudia

The association of pesticides with biological control is possible only if they provide some selectivity to natural enemies. In the organic production system the effect of insecticides on beneficial insects has not been extensively studied. Thus, this study aimed to evaluate in laboratory conditions the effect of pesticides used in this system on the adults of the predator Cryptolaemus montrouzieri Mulsant (Coleoptera, Coccinellidae). We used four treatments, which corresponded to four multiple values (0.25x, 0.5x, 2x and 1x) of the concentration recommended by manufacturers of the following products: Rotenat CE®, Pironat®, Biopirol 7M®, Organic Neem®, Natuneem® and lime sulfur, which were tested in C. montrouzieri by topical application and residual exposure. None of the products, at any concentrations tested, had a significant effect on the survival of adults of C. montrouzieri, what did not differ from the distilled water control, showing that the products tested are selective to the adults of this species. However, other forms of exposure and evaluation methods must be studied.

1. Rotenona
2. Nim
3. Inseto benéfico
4. Calda sulfocálcica
5. Predador
6. Extrato pirolenhoso.
7. Entomologia Agrícola