Comparison of Permethrin Applied as a Foliar Spray and Root Soak for Cabbage Looper Control on Greenhouse Chrysanthemum Cuttings and Celery Transplants12
| Autor: | R. K. Lindquist, H. R. Krueger, D. E. Simonet |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Ecology
biology business.industry technology industry and agriculture Pest control food and beverages macromolecular substances General Medicine Root system biology.organism_classification Cutting Horticulture Cabbage looper Agronomy Insect Science embryonic structures parasitic diseases Ornamental plant Trichoplusia medicine Phytotoxicity business Permethrin medicine.drug |
| Zdroj: | Journal of Economic Entomology. 73:381-384 |
| ISSN: | 1938-291X 0022-0493 |
| DOI: | 10.1093/jee/73.3.381 |
| Popis: | A method of soaking chrysanthemum cuttings and celery transplants in permethrin solutions was evaluated to determine efficacy and foliar residues. Plants were soaked in solutions containing 625–2500 ppm permethrin ± a surfactant, Hyamine 3500® This method was compared with a standard foliar application of the same permethrin concentrations + the surfactant. Root soaking in permethrin + surfactant resulted in higher residues but also caused moderate-severe phytotoxicity. No significant growth reduction occurred in permethrin-only root soak or any foliar spray treatments. Root soak treatments of permethrin were efficaceous vs. Trichoplusia ni (Hubner) on chrysanthemum but not significantly ( P = 0.05) better than foliar sprays. T. ni mortality was quite variable on celery transplants soaked in permethrin solutions, probably due to the root system being surrounded by soil. Because of the excessive rates necessary to provide adequate T. ni control in root soak treatments, we conclude that the method is not practical for use on a commercial scale. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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