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The Importance of the Shoot of Giant Foxtail for Uptake of Preemergence Herbicides

Published online by Cambridge University Press:  12 June 2017

Ellery L. Knake  and
Loyd M. Wax
Ellery L. Knake
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, Department of Agronomy, University of Illinois, Urbana, Illinois
Loyd M. Wax
Affiliation:
Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, Department of Agronomy, University of Illinois, Urbana, Illinois
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Abstract

Herbicides were mixed with Drummer silty clay loam soil in 1-inch layers in the shoot, root, shoot and root, or seed zones for giant foxtail (Setaria faberii Herrm.). After 2 weeks in the greenhouse, foxtail tops were harvested and dry weights used as the measure of herbicidal effectiveness. All of the 11 herbicides evaluated caused a reduction in dry weight when placed in the shoot zone. When placed in the root zone, only 3-amino-2,5-dichlorobenzoic acid (amiben) caused a reduction in dry weight. Most herbicides were just as effective, or more so, in the shoot zone as in the seed zone. Only amiben and N-1-naphthylphthalamic acid (NPA) were more effective in the seed zone than in the shoot zone.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 3 , July 1968 , pp. 393 - 395
Copyright
Copyright © Weed Science Society of America 

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References

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