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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  and
Chester G. McWhorter
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
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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.

Keywords

Ammonium sulfatepotassium phosphateherbicide phytotoxicityimidazolinoneadjuvantIPOLA.
Type
Research
Information
Weed Technology , Volume 1 , Issue 4 , October 1987 , pp. 328 - 331
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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