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Effects of Nitrogen Fertilization on Growth of Grand Fir and Douglas-Fir Stands in Northern Idaho Item Info
- Title:
- Effects of Nitrogen Fertilization on Growth of Grand Fir and Douglas-Fir Stands in Northern Idaho
- Creator:
- Shafii, B.; Moore, J.A.; Olson, J.R.
- Date Created (ISO Standard):
- 1989-04-01
- Description:
- A study of nitrogen fertilization response in thinned and unthinned stands of grand fir (Abies grandis) and Douglas-fir (Pseudotsuga menziesii) in northern Idaho showed that the application of one urea nitrogen treatment applied at a rate of 200 lb N/ac resulted in a significantly higher average basal area growth over a 6-year post-treatment period. Nitrogen fertilization also resulted in a significant height increment increase over the same period. Fourteen years after treatment, fertilization had increased average tree size, in terms of total cubic volume, by 14% in unthinned and by 23% in thinned stands. A comparison of thinned and unthinned stands suggested an increase in tree size (>300%) over the same period without significant reduction in average total cubic volume per acre. Patterns of stand development were altered by nitrogen fertilization.
- Subjects:
- research forest management fertilizer timber (lumber)
- Location:
- North and Central Idaho Eastern Washington Western Montana Northeastern Oregon
- Source:
- Shafii, B., J.A. Moore, J.R. Olson. 1989. Effects of nitrogen fertilization on growth of grand fir and Douglas-fir stands in northern Idaho. West. J. Appl. For. 4(2):54-57
- Source Identifier:
- Effects_of_Nitrogen_Fertilization_on_Growth_of_GF_and_DF_in_Nidaho_WJAF_004_002_1989
- Type:
- Text
- Format:
- application/pdf
Source
- Preferred Citation:
- "Effects of Nitrogen Fertilization on Growth of Grand Fir and Douglas-Fir Stands in Northern Idaho", Intermountain Forestry Cooperative, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iftnc/items/iftnc4783.html