[PDF] Effects Of Herbicide Release On The Growth Of 8 To 12 Year Old Hardwood Crop Trees eBook

Author : G. W. Wendel
Publisher :
Page : 8 pages
File Size : 34,42 MB
Release : 1987
Category : Hardwoods
ISBN :

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"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) injection 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 crown-class retrogression of released trees was less than unreleased trees. Glyphosate was effective in controlling most hardwood species during the 5 years of observation. S3.

Author : G. W. Wendel
Publisher :
Page : 8 pages
File Size : 46,17 MB
Release : 1987
Category : Hardwoods
ISBN :

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"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) injection 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 crown-class retrogression of released trees was less than unreleased trees. Glyphosate was effective in controlling most hardwood species during the 5 years of observation. S3.

Author : G. W. Wendel
Publisher :
Page : 0 pages
File Size : 18,21 MB
Release : 1987
Category : Hardwoods
ISBN :

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"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) injection 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 crown-class retrogression of released trees was less than unreleased trees. Glyphosate was effective in controlling most hardwood species during the 5 years of observation. S3

Author : Neil I. Lamson
Publisher :
Page : 12 pages
File Size : 17,60 MB
Release : 1989
Category : Cherry
ISBN :

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S2Precommercial thinning was done in a 12-year-old Appalachian hardwood sapling stand in West Virginia. Two crop-tree release techniques were used-crown touching and crown touching plus 5 feet. Results indicated that both treatments significantly increased & year d.b.h. growth for released yellow-poplar and black cherry crop trees. Although there was a major increase in d.b.h. growth, caution is suggested when using the crown-touching plus 5 feet treatment as butt-log quality response was not conclusive. Releasing crop trees with the crown-touching approach seems appropriate in sapling stands when applied to desirable stems on better sites. S3.

Author : Jeffrey W. Stringer
Publisher :
Page : 24 pages
File Size : 49,73 MB
Release : 1988
Category : Forest thinning
ISBN :

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S2Small-sawtimber white oak crop trees in Kentucky were released by a crown-touching technique. In two cutting treatments, 20 and 34 crop trees were released per acre at a total cost of $35 and $42, respectively. Both treatments yielded commercial volumes of cut material. Total mean merchantable volume (>5.0 inches d.b.h.) in cut trees was 693 cubic feet/acre, with approximately 2,400 board feet/acre in sawtimber (2 11.0 inches d.b.h.). On the basis of early crop-tree stem response, the released trees are growing 0.16 inch/year compared with 0.13 inch/year for the unreleased trees. S3.

Author : Jeffrey W. Stringer
Publisher :
Page : 304 pages
File Size : 30,76 MB
Release : 1999
Category : Nature
ISBN :

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The Central Hardwood Forest stretches from the upper Southeast to the Great Lakes & from Arkansas to Mass. It is an oak-dominated deciduous forest occurring in hilly to mountainous areas of this region -- the most extensive temperate deciduous forest in the world. Concerns the biology & management of central hardwoods by forest scientists from throughout the Central Hardwood Region of the Eastern U.S. Includes papers on: nutrient dynamics; stand structure; reforestation/reclamation; harvesting; modeling/inventory; wildlife; silviculture; disturbance effects; & genetics/tree improvement. Includes 21 poster presentations.