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Biological Control of Hemp Sesbania (Sesbania exaltata) Under Field Conditions with Colletotrichum truncatum Formulated in an Invert Emulsion

Published online by Cambridge University Press:  12 June 2017

C. Douglas Boyette ,
Paul C. Quimby Jr. ,
Charles T. Bryson ,
Grant H. Egley  and
Floyd E. Fulgham
C. Douglas Boyette
Affiliation:
South. Field Crops and Mech. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
Paul C. Quimby Jr.
Affiliation:
South. Field Crops and Mech. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
Charles T. Bryson
Affiliation:
South. Field Crops and Mech. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
Grant H. Egley
Affiliation:
South. Field Crops and Mech. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
Floyd E. Fulgham
Affiliation:
South. Field Crops and Mech. Lab., Agric. Res. Serv., U.S. Dep. Agric., Stoneville, MS 38776
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Abstract

In greenhouse experiments, conidia of Colletotrichum truncatum applied in an invert emulsion formulation controlled hemp sesbania 100% in the absence of a dew treatment. In field experiments, hemp sesbania control averaged 95 and 97% in 1989 and 1990, respectively, when this formulation was applied to hemp sesbania seedlings using tractor-mounted, air-assist nozzles. This level of weed control was comparable to that achieved from the herbicide acifluorfen. These results indicate that C. truncatum has excellent potential as a mycoherbicide for controlling hemp sesbania and that this potential can be augmented by formulating the pathogen as an invert emulsion.

Keywords

Hemp sesbania, Sesbania exaltata (Rydb.) ex. A. W. Hill #3 SEBEXColletotrichum truncatum (Schw.) Andrus & MooreBioherbicidal potentialbiological herbicidemycoherbicideSEBEX
Type
Special Topics
Information
Weed Science , Volume 41 , Issue 3 , September 1993 , pp. 497 - 500
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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