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Biological Control Studies on Yellow Nutsedge with Bactra verutana Zeller

Published online by Cambridge University Press:  12 June 2017

P. E. Keeley ,
R. J. Thullen  and
J. H. Miller
P. E. Keeley
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Shafter, California
R. J. Thullen
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Shafter, California
J. H. Miller
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Shafter, California
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Abstract

Studies were conducted on and in the vicinity of the U. S. Cotton Research Station at Shafter, California, to evaluate the prevalence of the insect Bactra verutana Zeller (Olethreutidae) and its potential for injury to yellow nutsedge (Cyperus esculentus L.). Field surveys during August 1966, and August and October 1967 revealed many infested yellow nutsedge plants. Other field studies indicated that the insect may significantly suppress the growth of yellow nutsedge, providing that the insect infestation is early, sufficiently severe, and present on both parent and subsequently emerging vegetative plants. Greenhouse studies further revealed that severely infested plants may survive to produce numerous vegetative plants and tubers. While Bactra verutana Zeller damaged yellow nutsedge plants late in the season, the absence of early infestation limited its usefulness as a biological control agent.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 3 , May 1970 , pp. 393 - 395
Copyright
Copyright © 1970 Weed Science Society of America 

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References

Literature Cited

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