Increased metabolism of a pyrrolidine urea herbicide in corn by a herbicide antidote |
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| Authors: | ROBERT E. HOLM STEVE S. SZABO |
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| Affiliation: | Diamond Shamrock Corporation, T. R. Evans Research Center, P.O. Box 348, Painesville, Ohio 44077, and Boyce Thompson Institute for Plant Research, Inc, 1086 North Broadway, Yonkers, New York 10701, U.S.A. |
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| Abstract: | Corn, cotton, and sorghum plants were injured by high rates of 5328 (cis-2,5-dimeihyl-1-pyrrolidinecarboxanilide) when it was applied to the soil surface al planting time. The injury was severe al 35·84 kg/ha (eight times recommended dosage) and in corn resulted in complete inhibition of adventitious root development and reduced shoot and primary and secondary root growth. Treatment of the seeds with 0·5% Protect (1,8-naphthalic anhydride) prior to planting dramatically decreased the injurious effect of 5328 on corn, sorghum, and cotton. Using 14C-5328 in corn, it was shown that Protect did not alter herbicide uptake. However, the rate of conversion of the herbicide molecule in corn tissue lo water soluble, nonherbicidal metabolites was markedly enhanced in plants grown from Protect-treated seeds. |
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