Absorption, Translocation, and Degradation of Tebuthiuron and Hexazinone in Woody Species
| Autor: | Eddie Basler, Wayne K. McNeil, Jimmy F. Stritzke |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
0106 biological sciences
Nutrient solution biology Bur Oak 04 agricultural and veterinary sciences Plant Science biology.organism_classification 01 natural sciences Hexazinone Loblolly pine Juniperus virginiana 010602 entomology chemistry.chemical_compound Horticulture Ulmus 'Alata' Tebuthiuron chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science Juglans |
| Zdroj: | Weed Science. 32:739-743 |
| ISSN: | 1550-2759 0043-1745 |
| Popis: | Seedlings of winged elm (Ulmus dataMichx.), bur oak (Quercus macrocarpaMichx.), black walnut (Juglans nigraL.), eastern redcedar (Juniperus virginianaL.), and loblolly pine (Pinus taedaL.) were treated in nutrient solution with ring-labeled14C-tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea} or14C-hexazinone [3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione]. Four hours later,14C was detected in all sections of winged elm treated with14C-tebuthiuron and14C-hexazinone. Root absorption of the tebuthiuron label by the other species occurred in the order: loblolly pine > bur oak > black walnut = eastern redcedar. The sequence of14C-hexazinone absorption was: loblolly pine > black walnut ≥ bur oak = eastern redcedar. Foliar accumulation of the tebuthiuron label occurred in the order: bur oak > loblolly pine > eastern redcedar = black walnut, whereas the sequence with hexazinone was loblolly pine > bur oak > black walnut = eastern redcedar. The presence of the three metabolites of hexazinone in loblolly pine suggests that it may be resistant to hexazinone as a result of its ability to degrade hexazinone rather than its ability to limit uptake. |
| Databáze: | OpenAIRE |
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