Bromoxynil Antagonizes Johnsongrass (Sorghum halepense) Control with Graminicides
| Autor: | Daniel B. Reynolds, David L. Jordan, C. B. Corkern, J. L. Griffin, P. R. Vidrine |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
0106 biological sciences
Bromoxynil biology 04 agricultural and veterinary sciences Plant Science engineering.material Phytopharmacology Sorghum biology.organism_classification Weed control 01 natural sciences Fiber crop 010602 entomology chemistry.chemical_compound chemistry Agronomy Botany 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Weed Antagonism Agronomy and Crop Science Malvaceae |
| Zdroj: | Weed Technology. 12:205-208 |
| ISSN: | 1550-2740 0890-037X |
| DOI: | 10.1017/s0890037x00043694 |
| Popis: | Field studies were conducted over 2 yr to evaluate rhizome johnsongrass control with tank mixtures and sequential applications of bromoxynil at 1.7 kg ai/ha and the graminicides clethodim, fluazifop-P, and quizalofop-P. When compared with the graminicide alone, bromoxynil reduced johnsongrass control 28 days after treatment (DAT) 20, 36, and 55% when applied in combination with clethodim, fluazifop-P, and quizalofop-P, respectively. Application of bromoxynil 7, 3, and 1 d before or 1, 3, and 7 d after all graminicides reduced antagonism when compared with the bromoxynil plus graminicide mixtures. Based on johnsongrass control 28 DAT, antagonism was precluded when bromoxynil was applied 3 d before clethodim and 7 d before fluazifop-P and quizalofop-P. Application of bromoxynil 3 and 7 d after quizalofop-P and 7 d after clethodim also precluded antagonism. The antagonistic tank mixtures of bromoxynil and graminicides reduced cotton yield 17% because of reduced johnsongrass control compared with graminicides alone. A 3-d or greater application interval between bromoxynil and the graminicides was necessary to maximize cotton yield. |
| Databáze: | OpenAIRE |
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