Field Evaluation of Bacillus thuringiensis for Control of Navel Orangeworms on Almonds12

Autor:	D. K. Hunter, S. S. Collier, James E. Lindegren, Darlene F. Hoffmann, William R. Kellen
Rok vydání:	1977
Předmět:	Horticulture Ecology business.industry Insect Science Bacillus thuringiensis General Medicine Biology business biology.organism_classification Biotechnology
Zdroj:	Journal of Economic Entomology. 70:332-334
ISSN:	1938-291X 0022-0493
DOI:	10.1093/jee/70.3.332
Popis:	Field trials with Bacillus thuringiensis Berliner for control of paramyelois transitella (Walker) were conducted in commercial almond orchards in California. B. thuringiensis formulated as Dipel® (2% dust and WP), Thuricide® HPC (EC), and Biotrol® XK (WP) was applied starting at about the onset of hullcrack for 4–5 applications at 3–10 day intervals. A synthetic feeding stimulant, Mo-Bait,® also was tested. The highest level of control (44.8% damage reduction) was obtained with 4 applications of Thuricide HPC at a rate of 1 qt/25 trees. The addition of the feeding stimulant did not increase the effectiveness of the treatments. Navel orangeworms are difficult to control because they apparently move to the deeper areas of the hull-shell interspace that are not penetrated by the treatments.
Databáze:	OpenAIRE
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