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Pronamide Phytotoxicity in Ten Wisconsin Soils

Published online by Cambridge University Press:  12 June 2017

T. E. Dutt  and
R. G. Harvey
T. E. Dutt
Affiliation:
Dep. of Agron., Univ. of Wisconsin
R. G. Harvey
Affiliation:
Dep. of Agron., Univ. of Wisconsin, Madison, WI 53706
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Abstract

Pronamide [3,5-dichloro-(N-1, 1-dimethyl-2-propynyl) benzamide] phytotoxicity was compared in 10 Wisconsin soils and the relationship of activity to soil physical and chemical properties appraised. Twelve soil properties were measured and correlated with pronamide I50 (50% fresh weight inhibition) values using oats (Avena sativa L. ‘Portal’) as the indicator plant in bioassays conducted under greenhouse conditions. Organic matter was the soil variable most inversely correlated with pronamide phytotoxicity. Cation exchange capacity, field moisture capacity, and Mg content were also inversely correlated with pronamide phytotoxicity, but probably reflect changes in soil organic matter levels. Clay content did not significantly affect pronamide phytotoxicity.

Keywords

Oatsclaybioassay
Type
Research Article
Information
Weed Science , Volume 28 , Issue 4 , July 1980 , pp. 429 - 432
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

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