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Foliar Nutrient and Tree Growth Response of Mixed-conifer Stands to Three Fertilization Treatments in Northeast Oregon and North Central Washington Item Info
- Title:
- Foliar Nutrient and Tree Growth Response of Mixed-conifer Stands to Three Fertilization Treatments in Northeast Oregon and North Central Washington
- Creator:
- Garrison, M.T.; Moore, J.A.; Shaw, T.M.; Mika, P.G.
- Date Created (ISO Standard):
- 1999-07-28
- Description:
- The results of two studies evaluating nutrient uptake in mixed-conifer stands following fertilization are reported. The four species examined were Douglas-fir, grand fir, lodgepole pine and ponderosa pine. The fertilization treatments were 224 kg ha-1 nitrogen, 224 kg ha-1 nitrogen plus 112 kg ha-1 sulfur, and 224 kg ha-1 nitrogen plus 190.4 kg ha-1 potassium. Foliar nutrient concentrations, contents and ratios were analyzed, as well as four-year volume response. Douglas-fir showed both N and S deficiencies in control foliage samples, and produced significant growth response to the N + S treatment, but not to the N-alone treatment. Grand fir also showed foliar N and S deficiencies, but produced significant growth response to both N and N + S fertilization. This suggests that grand fir was better able to utilize N than Douglas-fir even under S-limiting conditions. Lodgepole pine showed deficient foliar N and S concentrations, and produced significant volume responses to N and N + K fertilization. Lodgepole volume response to N + S fertilization was highly variable, and appeared to be site specific. Ponderosa pine did not show nutrient deficiencies for N or K, and did not respond significantly in either foliar K or S levels or in growth to N, N + K or N + S fertilization. This suggests that nutrient deficiency may not have been a factor limiting foliar nutrient response and growth for ponderosa pine.
- Subjects:
- research fertilizer timber (lumber) statistics
- Location:
- North and Central Idaho Eastern Washington Western Montana Northeastern Oregon
- Source:
- Garrison, M.T., J.A. Moore, T.M. Shaw, P.G. Mika. 2000. Foliar Nutrient and Tree Growth Response of Mixed-Conifer Stands to Three Fertilization Treatments in Northeast Oregon and North Central Washington. Forest Ecology and Management. 132: 183-198.
- Source Identifier:
- Foliar_Nutrient_Tree_Growth_Response_Mixed-Conifer_Stands_3_Fert_Treatments_NE_Oregon_NC_Washington_FEM_2000
- Type:
- Text
- Format:
- application/pdf
Source
- Preferred Citation:
- "Foliar Nutrient and Tree Growth Response of Mixed-conifer Stands to Three Fertilization Treatments in Northeast Oregon and North Central Washington", Intermountain Forestry Cooperative, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iftnc/items/iftnc4825.html