Efficacy and persistence of some insecticides on summer-fruit tortrix moth Adoxophyes orana | Efficacite et remanence de differents insecticides sur les chenilles de capua (Adoxophyes orana)
2006
Charmillot, P.J. | Pasquier, D.,Station de recherche Agroscope Changins-Waedenswil ACW, Nyon (Switzerland)
Tests were carried out to determine the efficacy and the persistence of some insecticides applied against summer fruit tortrix moth A.orana. Leaves were collected after the application of the treatments for rearing of 12-days old larvae in blooming period or newborn larvae in summer. The products lufenuron, tebufenozide and methoxyfenozide had a very high efficacy and an excellent persistence. Emamectin, indoxacarb and spinosad had a very good initial efficacy but a shorter persistence, independently of the tested concentration;tested on the young leaves, the efficacy declined quickly, due to growth that diluted the residues. The short persistence of chlorpyrifos-methyl, practically identical on the old and the young leaves, let suppose that this product has a systemic activity. Methoxyfenozide and spinosad had an excellent rain fastness.
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