Herbicide Hardwood Crop Tree Release in Central West Virginia
After 12 months, almost complete control (99+%) was achieved with the Accord, Garlon 3A, and Arsenal AC injection treatments across all study sites. The low volume stem bark band treatments used in this study were not effective. The imazapyr treatments adversely affected several crop trees and are not recommended for hardwood crop tree release. Some crop tree damage was inflicted by the Accord treatments, but when suggested guidelines are followed, Accord is recommended for crop tree release treatments. No crop tree damage was observed in the Garlon 3A treatments. The costs of the injection treatments expressed in dollars/ft2 of basal area controlled were as follows: Accord ($0.91), Garlon 3A ($1.04), and Arsenal AC ($0.84). The Northeast Decision Model Stand Inventory Processor using the NE-TWIGS growth simulator was used to predict the future composition and value of projected stands. The stem injection treatments more than doubled projected growth of black cherry basal area. Real rates of return for investment in weed tree control averaged 8.77% for stem injection treatments. This study indicates that chemical crop tree release treatments using stem injection with label recommended solutions of Accord or Garlon 3A are an effective way to increase the future value of Appalachian hardwood stands. North. J. Appl. For. 18(2):46–54.
Keywords: Herbicides; crop tree release; economic benefits; efficacy; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; hardwoods; natural resource management; natural resources; silviculture
Document Type: Miscellaneous
Affiliations: 1: College of Natural Resources, 228 Cheatham Hall, Virginia Tech, Blacksburg, VA, 24061-0324 2: USDA Forest Service, Northeastern Research Station, 180 Canfield St., Morgantown, WV, 26505-3101
Publication date: 2001-06-01
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