Effects of herbicide release on the growth of 8- to 12-year-old hardwood trees

G.W. Wendel; Neil I. Lamson; Neil I. Lamson

doi:10.2737/NE-RP-598

Treesearch

Effects of herbicide release on the growth of 8- to 12-year-old hardwood trees

Informally Refereed

Authors:

G.W. Wendel, Neil I. Lamson, Neil I. Lamson

Year:

1987

Type:

Research Paper

Station:

Northern Research Station

DOI:

https://doi.org/10.2737/NE-RP-598

Source:

NE-RP-598. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4 p

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Download (PDF 985 KB): https://research.fs.usda.gov/download/treesearch/21772.pdf

Abstract

In 8- to 12-year-old Appalachian hardwood stands, crop trees were released by stem injecting competing trees with a 20 percent aqueous solution of glyphosate. Species released were black cherry, red oak, and sugar maple. Release treatments were (a) injection of all trees within a 5-foot radius of the crop tree bole and (b) injections of all trees whose crown touched the crop tree. Five-year diameter growth of all species was significantly increased by both release treatments, but height growth was not affected by either treatment. Survival of released crop trees was higher and crownclass retrogression of released trees was less than unreleased trees. Glyphosate was effective in controlling most hardwood species during the 5 years of observation.

Keywords

Appalachian hardwoods, crop trees, release, herbicide

Citation

Wendel, G.W.; Lamson, Neil I. 1987. Effects of herbicide release on the growth of 8- to 12-year-old hardwood trees. NE-RP-598. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4 p