A field study was conducted at Yuma in 1990 to examine the efficacy of several biological insecticide formulations on beet armyworm in seedling lettuce. After a single application at thinning, none of the insecticides adequately reduced larval populations below damaging levels. Reductions in plant stand by larvalfeeding were significantly lower in plots treated with Lannate, Javelin, Biobit and Dipel. Lettuce seedling densities were reduced greaterthan 80% in untreated plots.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/221457 |
| Date | 05 1900 |
| Creators | Palumbo, John C., Butler, Marvin D., Mullis, Clayton H. Jr. |
| Contributors | Oebker, Norman F., Bantlin, Marguerite |
| Publisher | College of Agriculture, University of Arizona (Tucson, AZ) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Relation | 370088, Series P-88 |
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