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Drawing-up of pesticide selectivity lists to beneficial arthropods for IPM programmes in potato


  • Hautier, L. , Jansen, J.P. , Schiffers, B. , Deleu, R. & Moreira, C. (2004). Drawing-up of pesticide selectivity lists to beneficial arthropods for IPM programmes in potato. Comm. Appl. Biol. Sci, Ghent University, 69: (3), 171-181.
Type Journal Article
Year 2004
Title Drawing-up of pesticide selectivity lists to beneficial arthropods for IPM programmes in potato
Journal Comm. Appl. Biol. Sci, Ghent University
Label hautier 2004 tap 534
Recnumber 134
Volume 69
Issue 3
Pages 171-181
Endnote Keywords beneficial insects|exposure|fungicides|herbicides|insecticides|integrated pest management|mortality|nontarget effects|pesticide mixtures|potatoes|toxicity|fluazinam|metalaxyl-M|
Abstract To promote IPM programmes in potato, the toxicity of 19 fungicides, 4 herbicides and 11 insecticides commonly used in this crop in Belgium was assessed on three beneficial arthropods: Aphidius rhopalosiphi, Adalia bipunctata and Episyrphus balteatus. The pesticides were tested on glass plates with A. rhopalosiphi adults and A. bipunctata and E. balteatus larvae. For each insect, products inducing corrected mortality (Mc) lower than 30% were directly classified in a positive list for harmless products. The other compounds were further tested on plants and listed in toxicity classes according to mortalities induced during this extended laboratory test: harmless (Mc<30>80%). A chemical determination of pesticides residues was also performed for each experiment to determine the exposure of beneficial arthropods to pesticide residues and to validate the application of chemicals on tested substrates. On the basis of the results of acute toxicity tests, the period of each pesticide use according to normal agricultural practices and the abundance and importance of the three different groups of aphid natural enemies at different periods of the year, four pesticides lists were constructed. Each list corresponded to a different period of pesticides application: Period I - from seedling to beginning of June (based on A. rhopalosiphi tests), Period II - beginning to end of June (based on A. rhopalosiphi tests), Period III - beginning to end of July (based on E. balteatus and A. bipunctata tests) and Period IV - August to harvest (no exposure of beneficials). The results showed that herbicides were not toxic to the three species and can be used according to normal agricultural practices without restrictions. All fungicides can also be used without restrictions at recommended rates. Only the mixture metalaxyl-M+fluazinam was slightly harmful to A. bipunctata but had no effects on A. rhopalosiphi and E. balteatus. The results were more contrasted for insecticides and none of them was totally selective for all the 3 beneficial arthropods. Therefore, they can only be used with restrictions at periods II and III, according to the beneficial species that need to be protected.
Notes Cited Reference Count: 22 ref.Journal article, Conference paperEnglish
Author address Department of Biological Control and Plant Genetic Resources, Walloon Centre of Agricultural Research, Chemin de Liroux 2, B-5030 Gembloux, Belgium.
Fichier TAP_534_-_Comm__Appl__Biol__Sci,_Ghent_University,_69-3,_2004_pp_171-181.pdf
Authors Hautier, L. , Jansen, J.P. , Schiffers, B. , Deleu, R. & Moreira, C.