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Effects of Herbicide Concentration and Application Timing on the Control of Beech Root and Stump Sprouts Using the Cut-stump Treatment

出版	U.S. Department of Agriculture, Forest Service, Northern Research Station, 2009
URL	http://books.google.com.hk/books?id=mNyNe77q9PIC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋Application costs and efficacy for two concentrations of herbicide and treatment time intervals were determined for cut-stump treatments applied to American beech (Fagus grandifolia Ehrh.) to control root and stump sprouts in central West Virginia. Glyphosate as Glypro [trademark] (53.8 percent a.i.) was applied to the outer 2 inches of beech stumps from trees >6.0 inches in diameter at breast concentrations of Glypro [trademark] (50 and 100 percent) were also evaluated. This study demonstrated that a 50-percent solution of Glypro [trademark] was just as effective as a 100-percent solution and that an applicator could wait up to 4 hours after stems had been cut before applying the herbicide, without reducing efficacy.