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Night Applications of Phenoxy Herbicides on Plains Pricklypear

Published online by Cambridge University Press:  12 June 2017

Joseph L. Schuster
Joseph L. Schuster*
Affiliation:
Dep. of Range and Wildlife Manage., Texas Tech Univ., Lubbock, Texas 79409
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Abstract

Night applications of phenoxy herbicides on plains pricklypear (Opuntia polyacantha Haw.) resulted in more plants being killed than comparable day applications. Night applications gave rapid herbicidal responses that were negated by the second year if chemical concentrations were too high. With low herbicide concentrations (½ and 1 lb aehg) effectiveness increased with proportion of diesel oil in carrier. The ester forms of 2-(2,4,5-trichlorophenoxy)propionic acid (silvex) killed more plants than did the ester or amine forms of (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T) in diesel oil:water (1:4, v/v) carriers.

Information

Type
Research Article
Information
Weed Science , Volume 19 , Issue 5 , September 1971 , pp. 585 - 587
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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