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Wine Grape (Vitis vinifera L.) Response to Simulated Herbicide Drift

Published online by Cambridge University Press:  12 June 2017

Kassim Al-Khatib
Affiliation:
N.W. Res. Cent., Wash. State Univ. Mt. Vernon, WA 98273
Robert Parker
Affiliation:
N.W. Res. Cent., Wash. State Univ. Mt. Vernon, WA 98273
E. Patrick Fuerst
Affiliation:
N.W. Res. Cent., Wash. State Univ. Mt. Vernon, WA 98273

Abstract

Chlorsulfuron, thifensulfuron, bromoxynil, 2,4-D, glyphosate, and a combination of 2,4-D plus glyphosate were applied on newly planted and established ‘Lemberger’ wine grape at 1/3, 1/10, 1/33, and 1/100 of the maximum labelled rate in wheat or fallow to simulate exposure to drifted herbicides. All herbicides produced symptoms on grape but the most severe symptoms were with 2,4-D and the least severe with bromoxynil. Newly planted grape was more sensitive to herbicides than established grape. Although established grape recovered from injury caused by all treatments except 2,4-D and the highest rate of chlorsulfuron and glyphosate, newly planted grape recovered only from lower rates of bromoxynil. All herbicides resulted in diagnostic symptoms, but other symptoms were very similar to those caused by other stresses.

Information

Type
Research
Copyright
Copyright © 1993 by the Weed Science Society of America 

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