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Ozone-Metolachlor Interactions on Corn (Zea mays), Bean (Phaseolus vulgaris), and Soybean (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Wondimagegnehu Mersie ,
Tadesse Mebrahtu  and
Muddappa Rangappa
Wondimagegnehu Mersie
Affiliation:
Va. State Univ., Petersburg, VA 23803
Tadesse Mebrahtu
Affiliation:
Va. State Univ., Petersburg, VA 23803
Muddappa Rangappa
Affiliation:
Va. State Univ., Petersburg, VA 23803
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Abstract

The potential interactive effects between metolachlor [0, 0.1, 0.5, and 1.0 ppm (w/w)] and the air pollutant ozone (O3) [0.2 and 0.4 ppm (v/v)], on growth of corn, bean, and soybean were examined under controlled conditions. At both concentrations, O3 alone reduced corn and bean dry weights but only affected bean at 0.4 ppm (v/v). Shoot dry weight of corn was reduced by O3 plus metolachlor more than expected, thus indicating synergism. The expected dry weights of bean and soybean treated with metolachlor plus O3 were similar to or higher than expected, thus indicating additive or antagonistic interactions.

Keywords

Metolachlor, 2-chloro-N-(2-ethyl-6-methyl-phenyl)-N-(2-methoxy-1-methylethyl)acetamidebean, Phaseolus vulgaris L.corn, Zea mays L.soybean, Glycine max (L.)Merr.Air pollutantsynergismantagonism
Type
Research
Information
Weed Technology , Volume 3 , Issue 4 , December 1989 , pp. 650 - 653
Copyright
Copyright © 1989 by the Weed Science Society of America 

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