Effect of Herbicide, Dosage, and Volume on Hazel Brush at Different Foliar Stages
Authors: Roe, Eugene I.; Buchman, Roland G.
Source: Forest Science, Volume 9, Number 4, 1 December 1963 , pp. 477-484(8)
Publisher: Society of American Foresters
Abstract:To determine the minimum amount of herbicide required to give adequate control of hazel brush (Corylus americana and C. cornuta), a comprehensive test of foliage spraying with common herbicides was undertaken in northern Minnesota. Treatments consisted of water emulsions of 2 herbicides applied in 3 dosages and 3 volumes at 5 stages of foliar development. Based on the amount of stem kill and recovery from such injury, it was found that: (1) 2,4-D gave better control than silvex at all growth stages except midleaf when neither was satisfactory; (2) two pounds of 2,4-D per acre was definitely better than either one pound or 1/2 pound at all stages except midleaf; (3) dosage was generally linear in its effect, 2 pounds giving practically complete control at the shoot-growth-complete stage; (4) the volume of mixture in which the 2,4-D was applied did not affect the results; (5) The best control was obtained at the shoot-growth-complete stage; the poorest at midleaf; control was intermediate otherwise.
Document Type: Journal Article
Affiliations: Research Forester and Statistician, Lake States Forest Expt. Sta., Forest Service, U.S. Dept. Agric.
Publication date: December 1, 1963
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