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Influence of Inorganic Salts and Imazapyr on Control of Pitted Morningglory (Ipomoea lacunosa) with Imazaquin and Imazethapyr

Published online by Cambridge University Press:  12 June 2017

Gene D. Wills
Affiliation:
Delta Branch, Miss. Agric. For. Exp. Stn.
Chester G. McWhorter
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776

Abstract

Effects of 0.1 M ammonium sulfate, 0.1 M potassium phosphate, and 7 g/ha of the isopropylamine salt of imazapyr {(+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acid} were evaluated on the phytotoxicity of the ammonium salt of imazaquin {2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} and the ammonium salt of imazethapyr {(+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acid} applied postemergence to pitted morningglory (Ipomoea lacunosa L. #3 IPOLA). While each of these salts and imazapyr applied alone had no effect, combining them with imazaquin or imazethapyr significantly increased control of pitted morningglory.

Type
Research
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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