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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #34

Kane Experimental Forest Weeding Study
To study the effect of silvicultural treatment on the growth of selected crop trees.
expected to continue
Kane Experimental Forest. Block 1 is in the eastern half of compartment 1, block 2 is in compartment 7 & 8, block 3 is in compartment 9 and block 2 is in compartment 11.

Slopes for all 4 blocks ranged from 10% (upperslope) to 7% (midslope) to 5% (plateau). Elevation ranged from 1920' to 2080'. Soils were Clymer silt loam. In 1936, stand density varied among the 4 blocks: Block 1, largely pin cherry, had an average density of shrubby and herbaceous ground cover of 63%. Block 2 was predominantly maple with some black cherry and had a 21% herbaceous and shrubby ground cover. Block 3 was more than half covered by sugar maple. Other significant species were beech and pin cherry. The canopy was dense and the ground cover 25%. Block 4 is comprised mostly of sugar maple & black cherry with a scattering of red maple, beech, yellow poplar and cucumber magnolia. Hemlock was absent. Herbaceous & shrubby growth covers an average of 45% of the area surrounding crop trees.

4 randomized blocks sampling different stand conditions. Each block is 6 chains wide, 8 chains long and 4.8 acres in area. Within each block, 12 square 0.1-acre plots are spaced at 1 chain intervals and arranged in 3 columns and 4 rows. Each 0.1-acre plot is surrounded by an isolation strip that is 0.5 chain wide. Adjacent plots are considered as pairs or twin plots, of which there are 6 in each block.
The treatment applied to the plots were light, silvicultural, and heavy weedings. Of the 6 twin plots in each block, 2 were treated by each of the 3 weeding methods. The assignment of treatments was entirely random: 1936.

Second weeding on lightly weeded plots if necessary: 1941.

Analysis of data was divided into the following categories:
    1. Growth of all crop trees vs. treatment 
    2. Growth of crop trees of different species vs. treatment 
    3. Response of crop trees of different crown classes 
    4. Height growth of crop trees 
    5. Competition index 
    6. Changes in bole form, clear length, etc. 
    7. Stand density and growth rate 
    8. Changes in stand composition 
    9. Stand development
Crown length, crown ratio and flatness index: 1941 photographs: 1936.

Crop tree descriptions, species, d.b.h., height to base of crown, clear length, total height, vigor, crown width, crown density, topshade, crown class, crown distribution, number of branches by size, form, bole defects, circumference injured, density of ground cover, origin and diameter of parent stump: 1936, 1941, 1946, 1952, 1956, 1961, 1966, 1971, 1973, 1988.

Plot corners are permanently marked. 
Crop trees were clearly marked: written descriptions of each marked tree were recorded. 
Data visually checked during computer data entry.
Raw data by plot reside on DG and tally sheets are kept with written instructions and detailed maps to each stand. 
Annually, the raw data are transformed using the REGEN1 program in DG Info. System. Summarized data by plot and by stand reside in a DG-based program that can output to ASCII text files.
Studies of Ecosystem Processes
each request is reviewed
Establishment report. 1937. C. E. Ostrom. U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, Warren, PA.
Susan Stout, USDA, Forest Service, P.O. Box 267, Irvine PA 16329. (814) 563-1040



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