Uptake, Movement, and Metabolism of Cyanazine in Fall Panicum, Green Foxtail, and Corn
| Autor: | William F. Meggitt, A. D. Kern, Donald Penner |
|---|---|
| Rok vydání: | 1975 |
| Předmět: |
0106 biological sciences
Panicum dichotomiflorum biology Chemistry Setaria viridis 04 agricultural and veterinary sciences Plant Science Root system Metabolism biology.organism_classification 01 natural sciences 010602 entomology Agronomy Foxtail 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Phytotoxicity Weed Agronomy and Crop Science Panicum |
| Zdroj: | Weed Science. 23:277-282 |
| ISSN: | 1550-2759 0043-1745 |
| DOI: | 10.1017/s0043174500053029 |
| Popis: | In greenhouse studies root absorption after postemergence applications of cyanazine 2-[[4-chloro-6-(ethylamino)-s-triazine-2-yl] amino]-2-methylpropionitrile enhanced phytotoxicity to fall panicum (Panicum dichotomiflorumMichx.), green foxtail (Setaria viridisL.), and corn (Zea maysL.). Less14C-cyanazine was taken up by the foliage of corn than by the weed species. A lower concentration of parent cyanazine in corn leaves was also evident. The addition of a phytobland oil to the treatment solution increased foliar cyanazine absorption 1 and 5 days following treatment. Although rapid metabolism occurred in corn roots, the large amount of cyanazine absorbed via the root system resulted in internal concentrations of parent cyanazine similar to that observed in the weed species. Cyanazine translocation was mainly acropetal from the point of application. The basis of selectivity is not solely based on the differential foliar uptake of cyanazine, but also on the proportion taken up by the foliage and roots. Under conditions favoring uptake by roots, the margin of selectivity may be reduced. |
| Databáze: | OpenAIRE |
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