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Response of Two Yellow Nutsedge Varieties to Three Herbicides

Published online by Cambridge University Press:  12 June 2017

Jaime Costa  and
Arnold P. Appleby
Jaime Costa
Affiliation:
Dep. Agron. Crop Sci., Oregon State Univ., Corvallis, OR 97331
Arnold P. Appleby
Affiliation:
Dep. Agron. Crop Sci., Oregon State Univ., Corvallis, OR 97331
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Abstract

In greenhouse studies, Cyperus esculentus L. var. esculentus was less susceptible than C. esculentus L. var. leptostachyus Boeck. to preplant applications of 1.77 kg/ha of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] or 0.5 kg/ha of metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazine-5-(4H)one]. C. var. esculentus was more susceptible than C. var. leptostachyus to postemergence applications of 2,4-D [(2,4-dichlorophenoxy)acetic acid] oil-soluble amine. C. var. esculentus had longer, slightly narrower, and more upright leaves; generally fewer but larger tubers; fewer rhizomes; and a lower frequency of flowers with less seeds per inflorescence than C. var. leptostachyus. Publications on C. esculentus should specify which variety was used.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 1 , January 1976 , pp. 54 - 58
Copyright
Copyright © 1976 by the Weed Science Society of America 

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References

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