Response To Crop Tree Release
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Response to Crop-tree Release by 7-year-old Stems of Red Maple Stump Sprouts and Northern Red Oak Advance Reproduction
Author | : George R. Trimble (Jr.) |
Publisher | : |
Total Pages | : 12 |
Release | : 1974 |
Genre | : Forests and forestry |
ISBN | : |
Response to Crop-tree Release by 7-year-old Stems of Yellow-poplar and Black Cherry
Author | : George R. Trimble (Jr.) |
Publisher | : |
Total Pages | : 16 |
Release | : 1973 |
Genre | : Cherry |
ISBN | : |
Releasing Young Hardwood Crop Trees
Author | : Gary W. Miller |
Publisher | : |
Total Pages | : 12 |
Release | : 1984 |
Genre | : Hardwoods |
ISBN | : |
S2A crown-touching release of 12-year-old black cherry and yellow-poplar crop trees on a good site required removing an average of 14 trees for every crop tree. An average of 80 crop trees per acre was left free-to-grow with an average growing space of 4.7 feet on all sides of the crown. Basal spraying cost $0.80 per crop tree, stem injecting cost $0.61 per crop tree, and chain saw felling cost $0.42 per crop tree. Cost indicators for each release method and suggestions for cost savings are provided.S3.
Early Crop-tree Release in Even-aged Stands of Appalachian Hardwoods
Author | : George R. Trimble (Jr.) |
Publisher | : |
Total Pages | : 18 |
Release | : 1971 |
Genre | : Forest thinning |
ISBN | : |
Crop-tree Release Thinning in 65-year-old Commercial Cherry-maple Stands (5-year Results)
Author | : H. Clay Smith |
Publisher | : |
Total Pages | : 16 |
Release | : 1994 |
Genre | : Forests and forestry |
ISBN | : |
Crop trees were selected and released in a 65-year-old cherry-maple stand in north central West Virginia. Six crop-tree treatments were evaluated. Crop trees were selected based on potential for quality sawtimber and veneer products. Initially, released crop trees averaged 12.5 inches d.b.h. and 80 feet tall and were released an average of 13 feet from the edge of their crown. Five-year stand growth, mortality, and in growth are discussed for the treatments. Tree quality as related to butt-log grade and epicormic branching also are discussed. Detailed information is given for d.b.h. growth as related to degree of crown release. In general, black cherry, free-to-grow crop trees for the 40 and 60 crop-trees-per acre treatments grew 1.0 inch in 5 years. Similar crop trees in the control areas, where tree crowns were not released, grew 0.6 inch during the same period. Growth response increased with an increase in number of sides of the tree crowns released. After 5 years, less than 2 percent of the released crop trees had a reduction in butt-log quality due to epicormic branching.
Precommercial Crop-tree Thinning in a Mixed Northern Hardwood Stand
Author | : Nancy G. Voorhis |
Publisher | : |
Total Pages | : 8 |
Release | : 1990 |
Genre | : Forests and forestry |
ISBN | : |
The effectiveness of precommercial crop tree thinning was investigated by thinning crop trees of paper birch, yellow birch, and sugar maple to two intensity levels at 8 years of age. Analysis of covariance on post thinning growth measurements taken 7 years later indicated a significant increase in diameter and crown-diameter growth, with the pattern of response varying by species. The study suggests that a uniform crop-tree thinning treatment for a stand composed of species with varying tolerances will rarely produce the best response for all the species.