Author: David MerckerPublisher:
ISBN:
Category : Hardwood industry
Languages : en
Pages : 12
Book Description
Crop Tree Release in Precommercial Hardwood Stands
Author: David MerckerPublisher:
ISBN:
Category : Hardwood industry
Languages : en
Pages : 12
Book Description
How to Release Crop Trees in Precommercial Hardwood Stands
Author: Precommercial Crop-tree Release Increases Diameter Growth of Appalachian Hardwood Saplings
Author: H. Clay SmithPublisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 12
Book Description
Applying a Crop-tree Release in Small-sawtimber White Oak Stands
Author: Jeffrey W. StringerPublisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 24
Book Description
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.
Crop Tree Management in Eastern Hardwoods
Author: Arlyn W. PerkeyPublisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 116
Book Description
Early Crop-tree Release and Species Cleaning in Young Northern Hardwoods
Author: Paul E. SendakPublisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 20
Book Description
In 1959 a study of crop-tree release and species cleaning was established in a 25-year-old northern hardwood stand growing on an above-average hardwood site that resulted from a silvicultural clearcut in the White Mountains of New Hampshire. Three treatmentslight crop-tree release, heavy release, and species cleaningwere randomly assigned to quarter-acre plots, five plots per treatment, including five untreated plots. The stand was followed for 5 years and based on the results, treatment effects were projected to a stand age of 45 years. These projections were subjected to a financial analysis. The treatment plots were tallied at stand ages 56 (1990) and 69 (2003) years. We summarize the results of the early crop-tree release and species cleaning and provide a long-term financial perspective based on the new tallies. Our goal was to repeat the financial analysis and re-examine the results and conclusions of the original study. We found that the return on investment at stand ages 56 and 69 years was not as good as originally reported. The least expensive treatment, a light crop-tree release, gave the greatest return on investment. An opportunity for a commercial thinning between stand age 45 and 56 was missed and most likely would have improved the financial outcome of the treatments. Approximately 400 crop trees per acre were selected for release in 1959 but 200 crop trees per acre would have been more than sufficient and would have improved the financial outcome of the treatments by lowering initial cost. On a similarly good hardwood site, with an equally well stocked young stand, and good markets for small diameter roundwood, we only can speculate that releasing 200 or preferably fewer dominant or codominant trees per acre at stand age 25 followed by a commercial thinning when feasible after stand age 45 could be a good investment for a landowner.
Guidelines for Managing Immature Appalachian Hardwood Stands
Author: H. Clay SmithPublisher:
ISBN:
Category : Forest management
Languages : en
Pages : 300
Book Description
Crop-tree Release Increases Growth of 12-year-old Yellow-poplar and Black Cherry
Author: Neil I. LamsonPublisher:
ISBN:
Category : Cherry
Languages : en
Pages : 12
Book Description
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.
Precommercial Crop-tree Release Increases Diameter Growth of Appalachian Hardwood Saplings
Author: H. Clay SmithPublisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 12
Book Description
Crop-tree Release Thinning in 65-year-old Commercial Cherry-maple Stands (5-year Results)
Author: H. Clay SmithPublisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 16
Book Description
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.