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The Basis for Bentazon Selectivity in Navy Bean, Cocklebur, and Black Nightshade

Published online by Cambridge University Press:  12 June 2017

Martin D. Mahoney  and
Donald Penner
Martin D. Mahoney
Affiliation:
Dep. of Crop and Soil Sci. Michigan State Univ., East Lansing, MI 48824
Donald Penner
Affiliation:
Dep. of Crop and Soil Sci. Michigan State Univ., East Lansing, MI 48824
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Abstract

The trifoliate leaf of tolerant navy bean (Phaseolus vulgaris L.) retained less bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-(4)3H-one 2,2-dioxide] from foliar applications than the unifoliate leaf, or the leaves from susceptible cocklebur (Xanthium pensylvanicum Wallr.) and moderately susceptible black nightshade (Solarium nigrum L.) seedlings. The 14C from 14C-bentazon applied to the foliage of black nightshade moved throughout the entire plant. In cocklebur, the 14C moved throughout the treated leaf, whereas, in the trifoliate leaf of navy bean, very little acropetal movement occurred from the site of application. However, in the unifoliate leaf of navy bean, acropetal and basipetal movement of 14C from the leaf was observed. The species differed in the 14C-metabolites formed from 14C-bentazon 1 and 5 days after treatment. The rapid metabolism of bentazon in the trifoliate leaf of navy bean appears to be related to tolerance.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 4 , July 1975 , pp. 272 - 276
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

Literature Cited

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