Planted Longleaf Pine Seedlings Respond to Herbaceous Weed Control Using Herbicides
Authors: Nelson, Larry R.; Zutter, Bruce R.; Gjerstad, Dean H.
Source: Southern Journal of Applied Forestry, Volume 9, Number 4, 1 November 1985 , pp. 236-240(5)
Publisher: Society of American Foresters
Abstract:Height initiation, and height and diameter growth of longleaf pine (Pinus palustris) seedlings were compared on plots receiving herbaceous weed control treatments and on unweeded check plots during the first 4 years after planting. Treatments initiated during the spring following planting included: broadcast weed control for 1 and 2 years, banded weed control in 5-foot bands for 1 and 2 years, and no weed control (check). Weed control had a positive effect on fourth-year height, groundline diameter, and the percentage of seedlings out of the grass stage, while survival was unaffected. The duration of weed control (2 years vs 1 year) had a similar effect on the same response variables, while the method of weed control (broadcast vs. band) had no effect. Trees on plots receiving 2 years of weed control were approximately 3 feet taller and 0.5 inch greater in groundline diameter than trees receiving no weed control. One year of weed control resulted in trees approximately 2 feet taller and 0.3 inch greater in groundline diameter than with no weed control. Weed control treatments shortened the time seedlings were in the grass stage by approximately 1 year, decreasing the time period during which a serious brown-spot needle blight infection could develop.¹
Document Type: Journal Article
Affiliations: Department of Forestry, Alabama Agricultural Experiment Station, Auburn University, Auburn AL 36830
Publication date: November 1, 1985
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