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Interaction Between a Velvetleaf Isolate of Colletotrichum coccodes and Thidiazuron for Velvetleaf (Abutilon theophrasti) Control in the Field

Published online by Cambridge University Press:  12 June 2017

L. A. Wymore  and
A. K. Watson
L. A. Wymore
Affiliation:
Macdonald Coll. of McGill Univ., Ste-Anne-de-Bellevue, Québec H9X 1C0
A. K. Watson
Affiliation:
Macdonald Coll. of McGill Univ., Ste-Anne-de-Bellevue, Québec H9X 1C0
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Abstract

Spraying with tank mix combinations of the fungus Colletotrichum coccodes and the plant growth regulator thidiazuron increased mortality, decreased biomass and height of velvetleaf, and increased soybean yield in field experiments. The velvetleaf isolate of C. coccodes was compatible with thidiazuron, and tank mix combinations consistently improved control over either component alone. In the moist 1986 season the fungus and the growth regulator interacted synergistically to increase velvetleaf mortality. In the drier 1987 season no significant interaction was detected between the two components.

Keywords

Thidiazuron, N-phenyl-N′-1,2,3-thidiazol-5-yl-ureaColletotrichum coccodes (Wallr.) Hughesvelvetleaf, Abutilon theophrasti Medik. ♯3 ABUTHsoybeans, Glycine max (L.) Merr.Biological weed controlbioherbicidesynergismABUTH
Type
Special Topics
Information
Weed Science , Volume 37 , Issue 3 , May 1989 , pp. 478 - 483
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

Literature Cited

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