Photolysis of Imidazolinone Herbicides in Aqueous Solution and on Soil
| Autor: | Rex A. Liebl, Mark M. Loux, William S. Curran, F. William Simmons |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
0106 biological sciences
Aqueous solution Imazaquin Chemistry 04 agricultural and veterinary sciences Plant Science Imazapyr 01 natural sciences Field capacity 010602 entomology chemistry.chemical_compound Loam Environmental chemistry Soil water 040103 agronomy & agriculture Ultraviolet light 0401 agriculture forestry and fisheries Atrazine Agronomy and Crop Science |
| Zdroj: | Weed Science. 40:143-148 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500057106 |
| Popis: | The photolytic degradation of several imidazolinone herbicides in solution and on soil was investigated. Ultraviolet light caused 100% degradation of imazaquin, imazethapyr, and imazapyr, and 87 and 8% degradation of imazamethabenz and atrazine in aqueous solutions, respectively, after 48 h. The order of susceptibility to photolysis in decreasing order was imazaquin = imazethapyr > imazapyr > imazamethabenz > atrazine. In soil Studies, 45% of imazaquin and 52% of imazethapyr dissipated from moist sand after 48 h of exposure. Herbicide dissipation on air-dry sand and on field capacity and air-dry silty clay loam was less than 10% in most instances. Atrazine photolysis was not detected. This research indicates that photolysis of imidazolinone herbicides in solution is rapid. Photolysis on soil occurs readily on coarse-textured wet soils probably due to greater availability of the herbicide for photochemical alteration. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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