| |
Publication Type:
| Refereed |
Author(s): | Hart, Stephen E.;
Wax, Loyd M. |
Author Affiliation: | Asst. Prof. and Res. Agronomist; North Centr. region, USDA-ARS, Dep. of Crop Sci., Univ. of Illionois, 1102 S. Goodwin Ave., Urbana, IL 61801 |
Title: | Dicamba antagonizes grass weed control with imazethapyr by reducing foliar absorption |
Source: | Weed Technology. Vol. 10, No. 4, October-December 1996, p. 828-834. |
Publishing Information: | Champaign, IL: Weed Science Society of America. |
# of Pages: | 7 |
Keywords: | TIC Keywords: Herbicide interaction; Ammonium sulfate; Dicamba; Weed control; Imazethapyr; Absorption; Antagonism; Tank mix
|
Abstract/Contents: | "Greenhouse and laboratory studies were conducted to determine the effects of tank-mixing the sodium salt of dicamba (Na-dicamba) with imazethapyr on the efficacy and foliar absorption of imazethapyr, applied with non-ionic surfactant (NIS) or methylated seed oil (MSO), by shattercane, giant foxtail, and large crabgrass. The effects of various salt formulations of dicamba and the addition of ammonium sulfate on efficacy, Ā¹ā“C-absorption and on foliar spray retention by the same species were also evaluated. Na-dicamba antagonized imazethapyr efficacy by reducing Ā¹ā“C-absorption. Using MSO instead of NIS prevented antagonism when Na-dicamba was applied at 70 and 140 g/ha and reduced the severity of the antagonism at greater application rates by greatly increasing Ā¹ā“C-absorption compared to NIS. Reductions in Ā¹ā“C-absorption and spray retention were due to the salt formulations of dicamba rather than the parent acid. The addition of ammonium sulfate prevented dicamba antagonism of imazethapyr toxicity to grassy weeds by maintaining Ā¹ā“C foliar absorption and spray retention at normal levels." |
Language: | English |
References: | 28 |
See Also: | Other items relating to: Foliar Feeding & Uptake |
Note: | Figures Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Hart, S. E., and L. M. Wax. 1996. Dicamba antagonizes grass weed control with imazethapyr by reducing foliar absorption. Weed Technol. 10(4):p. 828-834. |
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