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Two-Year Response of North Idaho Stands of Douglas-fir and Grand Fir to Urea Fertilizer and Thinning Item Info

Analysis of tree growth on treated plots of Douglas-fir (Pseudotsuga menziesii Mirb.) and grand fir (Abies grandis . IDougl.1 -. Lindl.) stands in Northern Idaho has shown that substantial growth gains may be realized within a two-year time period. Similar stands were selected on granitic, basaltic and metamorphic rock-types, and plots were managed as control, thinned, fertilized with 200 pounds per acre of Urea-Nitrogen, or fertilized and thinned. While fertilization alone increased basal area, height, and volume growth, thinned plots showed a slkhtlv "-- hieher basal area - erowth increase. a lower volume erowth - increase, and a decrease in height growth. Thinning and fertilization in combination produced an average . . basal area growth response of 36 percent, indicating -. a nicnificant interaction.

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Title:
Two-Year Response of North Idaho Stands of Douglas-fir and Grand Fir to Urea Fertilizer and Thinning
Creator:
Scanlin, David C.; Loewenstein, Howard; Pitkin, Franklin H.
Date Created:
1976-12
Description:
Analysis of tree growth on treated plots of Douglas-fir (Pseudotsuga menziesii Mirb.) and grand fir (Abies grandis . IDougl.1 -. Lindl.) stands in Northern Idaho has shown that substantial growth gains may be realized within a two-year time period. Similar stands were selected on granitic, basaltic and metamorphic rock-types, and plots were managed as control, thinned, fertilized with 200 pounds per acre of Urea-Nitrogen, or fertilized and thinned. While fertilization alone increased basal area, height, and volume growth, thinned plots showed a slkhtlv "-- hieher basal area - erowth increase. a lower volume erowth - increase, and a decrease in height growth. Thinning and fertilization in combination produced an average . . basal area growth response of 36 percent, indicating -. a nicnificant interaction.
Document Type:
Research Report
Library Call Number:
IDAHO SD.12.I2B18
Subjects:
grand fir abies grandis Douglas-fir pseudotsuga menziesii urea fertilizer thinning tree response North Idaho
UIEF Unit:
Flat Creek
Location:
UIEF; Flat Creek
Latitude:
46.851013
Longitude:
-116.724478
Publisher:
Forest, Wildlife and Range Experiment Station, University of Idaho
Department:
Department of Forest Resources
Source:
Bulletin Number 18, Forest, Wildlife, and Range Experiment Station, University of Idaho
Type:
text
Format:
application/pdf

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Preferred Citation:
"Two-Year Response of North Idaho Stands of Douglas-fir and Grand Fir to Urea Fertilizer and Thinning", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0086.html
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Rights:
In copyright, educational use permitted.
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http://rightsstatements.org/vocab/InC-EDU/1.0/
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