Full TGIF Record # 56572
Item 1 of 1
Publication Type:
i
Report
Author(s):Keese, R. J.; Forth, C. L.
Author Affiliation:Dow AgroSciences, Harrisburg, PA and TruGreen-ChemLawn, Baltimore, MD
Title:Gallery reduces callbacks
Meeting Info.:51st Annual Meeting, Birmingham, AL, January 26-28, 1998
Source:Southern Weed Science Society Proceedings. Vol. 51, 1998, p. 80.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:1
Keywords:TIC Keywords: Isoxaben; Weed control; Lawn turf; Taraxacum officinale; Plantago; Trifolium repens; Euphorbia; Oxalis; Cerastium; Broadleaf weeds; 2,4-D + Mecoprop + Dicamba; Tank mix
Abstract/Contents:"Postemergence herbicide applications provide weed control to only those weeds present at application. Preemergence treatments prevent weed seeds from germinating; Gallery* prevents germination and provides a barrier against further weed encroachment. Applications to small home lawns were made either in fall of 1995, or spring of 1997, to evaluate weed activity. Properties averaged 3,500 to 4,000 square feet, and were located in the Baltimore, MD area. Weeds were identified prior to herbicide applications. Properties were divided into quadrants, where both the front and backyard were split in half. Each yard received an application of Trimec 959 (3.125 pt/A), and two quadrants received Trimec + Gallery* (1.0 lb/A). Evaluations were made at 6, 7 and 8 months after the fall application. The spring application was evaluated at 2,3 and 4 months after application. Weeds evaluated included dandelion (Taraxacum officinale), plantains (Plantago sp.), white clover (Trifolium repens), spurge (Euphorbia sp.), oxalis (Oxalis sp) and chickweed (Cerastium sp.). Significance of treatment differences was tested with binary logistic regression. Fall applications of Gallery provided excellent broadleaf weed control the following spring and summer. Greater than 95% weed control was achieved with Gallery over the 8 month period. Trimec however, provided approximately 70% control over the course of the study. Regrssion analysis showed that Trimec was 27 times more likely to fail than was Gallery, with a p-value of 0.00. Spring evaluations were more difficult, since many existing weeds at application were not controlled by the post-emergence Trimec treatment (i.e. ground ivy and violets). Evaluations omitted these weeds from the study. Gallery again provided approximately 90% control for the duration of the study, compared to 60% control with Trimec. Trimec was 5 times more likely to fail following a spring application, p-value = 0.00. The benefits of extended weed control are many, including fewer visits to retreat a site, fewer emerging weed complaints, more time to attend to other aspects of the lawncare business. Increased profitability can be a major benefit when new sales are being solicited rather than attending to callbacks. Financial comparisons of product costs, application and callbacks costs will be addressed."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Keese, R. J., and C. L. Forth. 1998. Gallery reduces callbacks. South. Weed Sci. Soc. Proc. 51:p. 80.
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