Use of Prescribed Fire and Hexazinone (Velpar) to Thin Understory Shortleaf Pine in an Oklahoma Pine-Hardwood Stand
Abstract:The use of hexazinone and/or prescribed fire in an uneven-aged overstocked stand of shortleaf pine (Pinus echinata Mill.) and mixed hardwoods reduced the number of seedling and sapling size pines by 50 to 72 percent, depending on treatment. Hexazinone not only resulted in hardwood control, but also reduced pine survival by increasing fire intensity. Increased fire intensity was thought to result from the increased litter buildup from the hardwood defoliation caused by hexazinone. Most of the increased pine thinning resulted from the killing of small trees. No seedling- or sapling-size pines less than 1.1 inches in diameter and 7 feet in height survived the fire on the hexazinone-treated plots, while on the control plots (fire only) 18 percent of the pine in this size class survived.
Document Type: Journal Article
Affiliations: Professor, Department, of Agronomy, Oklahoma State University, Stillwater
Publication date: August 1, 1981
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- Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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