Efficacy of ultra-low volume aerial application of an azadirachtin-based insecticide for control of the pine false webworm,Acantholyda erythrocephala(L.) (Hymenoptera: Pamphiliidae), in Ontario, Canada
| Autor: | D. B. Lyons, John W. McFarlane, A. G. Robinson, G. C. Jones, Dean G. Thompson, B. V. Helson, R. E. Mickle |
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| Rok vydání: | 2003 |
| Předmět: |
education.field_of_study
biology Frass fungi Population Aerial application biology.organism_classification chemistry.chemical_compound Azadirachtin Animal science chemistry Insect Science Botany Pamphiliidae Acantholyda erythrocephala PEST analysis education Agronomy and Crop Science Ultra-low volume |
| Zdroj: | International Journal of Pest Management. 49:1-8 |
| ISSN: | 1366-5863 0967-0874 |
| DOI: | 10.1080/713867832 |
| Popis: | The efficacy of an aerial application at ultra-low volume of a 3% azadirachtin-based insecticide (Fortune AZA 3%) at a nominal application rate of 50 g azadirachtin ha−1 was evaluated for control of pine false webworm, Acantholyda erythrocephala (L.). Applications were made to three separate blocks in red pine plantations in south-central Ontario. Population indices of pine false webworm were compared between the treated blocks and three untreated blocks. Spray application was timed to coincide with the preponderance of egg hatch. Numbers of insects declined in all blocks between the adult emergence period and the subsequent larval generation, but decline in treated blocks was significantly greater. Reductions of arboreal stages (70-90% vs 5-50 %), frass drop estimates (0.10-0.13 vs 1.16-2.65 g/m2 d−1) and defoliation (10.5-15.5% vs 35-92.9%) all indicated significant differences in pine false webworm populations in treated as compared to untreated blocks. Mean deposits of azadirachtin A ranging from 0.44... |
| Databáze: | OpenAIRE |
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