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Influence of Postemergence and Subsurface Layered Herbicides on Horsenettle and Peanuts

Published online by Cambridge University Press:  12 June 2017

P.A. Banks ,
M.A. Kirby  and
P.W. Santelmann
P.A. Banks
Affiliation:
Agron. Dep., Oklahoma State Univ., Stillwater, OK 74074
M.A. Kirby
Affiliation:
Agron. Dep., Oklahoma State Univ., Stillwater, OK 74074
P.W. Santelmann
Affiliation:
Agron. Dep., Oklahoma State Univ., Stillwater, OK 74074
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Abstract

Postemergence herbicide treatments that were most effective for controlling horsenettle (Solarium carolinense L.) were glyphosate [N-(phosphonomethyl)glycine], dicamba (3,6-dichloro-o-anisic acid), silvex [2-(2,4,5-trichlorophenoxy)-propionic acid], and picloram (4-amino-3,5,6-trichloropicolinic acid). All exhibited good to excellent long term control of the horsenettle plant when applied annually for at least 2 yr. Picloram and glyphosate both provided better control of horsenettle when applied at a postbloom or fruiting stage of growth. Dicamba and picloram also were very effective in controlling horsenettle when used as a subsurface layer (SSL) treatment. However, all of these treatments caused visual injury to peanuts (Arachis hypogaea L.). Applications of 2,4-DB [4-(2,4-dichorophenoxy)butyric acid] were effective in causing an 80 to 90% fruiting inhibition of horsenettle plants when applied at a prebloom stage of growth, with no damage to the peanuts. Applications of several dinitroaniline herbicides as SSL treatments exhibited some control of horsenettle with little crop injury. Postemergence treatments which effectively controlled seedling horsenettle plants grown in the greenhouse were glyphosate and dinoseb (2-sec-butyl-4,6-dinitrophenol).

Type
Research Article
Information
Weed Science , Volume 25 , Issue 1 , January 1977 , pp. 5 - 8
Copyright
Copyright © 1977 by the Weed Science Society of America 

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References

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