Influence of Foliar Exposure, Adjuvants, and Rain-free Period on the Efficacy of Glyphosate for Torpedograss Control

Smith, B.E. and Langeland, K.A. and Hanlon, C.G. (1999) Influence of Foliar Exposure, Adjuvants, and Rain-free Period on the Efficacy of Glyphosate for Torpedograss Control. Journal of Aquatic Plant Management, 37, pp. 13-16.

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Official URL: http://www.apms.org/japm/vol37/v37p13.pdf

Abstract

The proportion of torpedograss tissue exposed to glyphosate at application rates of 0.28, 0.56, 1.12, 2.24, and 4.48 kg/ha affected control as measured by regrowth. The effect of tissue exposure was more pronounced as application rate decreased. This study suggests that higher rates of glyphosate need to be used during higher water levels, when less torpedograss tissue is exposed to herbicide spray and lower rates may be used during periods of low water levels. Addition of the water conditioning agent Quest (R) (0.25% v/v) to glyphosate spray mixtures diminished the influence of simulated rain events following glyphosate application. Twelve other adjuvants did not influence the effect of simulated rain events.

Item Type: Article
Title: Influence of Foliar Exposure, Adjuvants, and Rain-free Period on the Efficacy of Glyphosate for Torpedograss Control
Personal Creator/Author:
CreatorsEmail
Smith, B.E.
Langeland, K.A.
Hanlon, C.G.
Refereed: Yes
Journal or Publication Title: Journal of Aquatic Plant Management
Volume: 37
Page Range: pp. 13-16
Date: 1999
Issuing Agency: Aquatic Plant Management Society, Inc.
Uncontrolled Keywords: surfactant, herbicide,Panicum repens, perennial, torpedograss, glyphosate
Subjects: Management
Biology
Item ID: 1739
Depositing User: Natalie Wiest
Date Deposited: 21 Nov 2008 23:39
Last Modified: 29 Sep 2011 20:09
URI: http://aquaticcommons.org/id/eprint/1739

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