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Biological Control and Its Integration in Weed Management Systems for Purple and Yellow Nutsedge (Cyperus rotundus and C. esculentus)

Published online by Cambridge University Press:  12 June 2017

Sharad C. Phatak ,
M. Brett Callaway  and
Charles S. Vavrina
Sharad C. Phatak
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
M. Brett Callaway
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
Charles S. Vavrina
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
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Extract

Observations of the effects of living organisms on weeds dates from 1795 when an insect, Dactylopius ceylonicus, was introduced for drooping pricklypear (Opuntia vulgaris Miller) control over a vast area. Since that time, biological control of weeds employed mainly the classical strategy of introducing natural enemies from areas of co-evolution. Self-perpetuation and dissemination of these introduced enemies was essential to suppress successfully the weed below economic levels. This classical tactic is suited particularly for weeds that are distributed widely in less intensively cropped or noncropped areas. Guidelines to introduce foreign organisms for biological control of weeds in the United States have been established.

Type
Symposium
Information
Weed Technology , Volume 1 , Issue 1 , January 1987 , pp. 84 - 91
Copyright
Copyright © 1987 by the Weed Science Society of America 

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