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Selectivity of phytosanitary products used in organic farming on adult of Cryptolaemus montrouzieri (Coleoptera, Coccinellidae) under laboratory conditions | Efrom | Semina: Ciências Agrárias

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

Caio Fábio Stoffel Efrom, Luiza Rodrigues Redaelli, Rafael Narciso Meirelles, Cláudia Bernardes Ourique

Resumo


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.


Palavras-chave


Predator; Beneficial insect; Rotenone; Lime sulfur; Neem; Pyroligneous extract.

Texto completo:

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DOI: http://dx.doi.org/10.5433/1679-0359.2011v32n4p1429

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Semina: Ciências Agrárias

Londrina - PR
ISSN 1676-546X

E-ISSN 1679-0359

semina.agrarias@uel.br