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Catalog of Long Term Research Conducted by the Northeastern Research Station

Catalog #44

Effect of Aerial Fertilization on Regeneration Stocking
1) To provide a vivid demonstration of the effects of fertilization on growth and development of young regeneration obtained after harvest cutting. 
2) To assess the impact of fertilization on production of wildlife browse and its crude protein content. 
3) To assess the impact on deer day usage. 
4) To determine the degree of nutrient movement into stream water and its effect on stream fauna.
1974
1978
Allegheny National Forest: 
District Compartment
Stand
Location
Sheffield
Ridgway
Bradford
Bradford
32
67
61
61
12
2
1
3
Cherry Grove Rd.
Rt. 185
Rt. 188 (unit 1)
Rt. 188 (unit 5)

Forest Type is Cherry-Maple.

Three large area replications of fertilized vs. unfertilized conditions.

A) 150 0.001-acre monitoring plots were selectively established on 75 acres of forest. Plots were evenly distributed within fertilized and unfertilized areas - about 1 plot per acre of treated area. 
B) 29 0.001-acre plots were established for regeneration study. 
C) 114 6' x 25' pellet group plots were established 25' south of the steel stakes marking the vegetation plot corners on Bradford and Ridgway sites.

100%
Bradford and Ridgway sites were fertilized May, 1974 with Site preparation made during 1972.
District:
Compartment:
Stand:
Acres:
Growing
Seasons
Since Cut:
% of Area
Fertilized:
Sheffield
Ridgway
Bradford
Bradford
32
67
61
61
12
2
1
3
25
53
28
26
2
3
2
2
50
50
100
0
A complete set of color slides, color photographs, and b & w photographs were taken of the fertilizer operation. Additional pictures were taken from permanent points established at Ridgway to illustrate growth responses. 
Pretreatment aquatic samples were obtained May, 1974. 
Pretreatment water samples were taken weekly between March 19 and May 7, 1994. 
Pretreatment tree height and diameter measurements were recorded on 144 0.01-acre unenclosed plots on Ridgway and Bradford. 50% were fertilized and 50% were unfertilized. 
Pretreatment vegetation stocking tallies were made on 114 0.001-acre plots on Ridgway and Bradford sites. Tallies included samples to be used to predict above ground biomass, browsable material, and crude protein. 50% of plots were fertilized and 50% were unfertilized. Tree diameters were recorded at a height of 12" above ground level. The tallest 15 trees per species on each plot were measured during pretreatment height and diameter sampling. Height and diameter measurements were made on the 50 tallest black cherry seedlings within 2 separate 0.1-acre plots within the enclosures on the Ridgway site.
Regeneration seedling counts by species and height class: <1', 1'-3', 3'-5', 5': 1974, 1975, 1976. 
Herbaceous cover: 1974, 1975, 1976.

Independent: basal area growth, height growth, biomass, crude protein content, deer day-use, nutrient concentrations in stream water, aquatic population changes. 
Dependent: fertilization (300 lbs/acre N, 100 lbs/acre P205).

Safety regulations were followed with all fertilizer use.
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
unknown
Study plan. 1974. Lew Auchmoody, Steve Steele 
Establishment report. 1974. Lew Auchmoody, Steve Steele. 

The above are office reports of 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
Dr. A. L. Leaf, S.U.N.Y. College of Environmental Science and Forestry; Allegheny National Forest, PA.

 

  

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