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Two Year Basal Area Response to N and S Fertilization for Mixed Conifer in Northeast Oregon and Southeast Washington (Umatilla) Item Info

Two years after fertilizer treatments were applied, the overall adjusted relative gross basal area response increased 3.1% on those plots receiving 200 lb. nitrogen (N) acre and 17.0% on those plots receiving 200 lb. N acre plus 100 lb. sulphur (S) acre. Nitrogen versus S growth response differs by geographic location with the Pomeroy, Tollgate and Ukiah sites having good N response but little or no S response, while growth response on the Heppner sites were low for N but increased significantly when S was added to the fertilizer treatment. Results from this study also show growth response is different by species, with grand fir expressing higher relative response than western larch or ponderosa pine for both N and N plus S (NS) treatments. Engelmann spruce and lodgepole expressed good relative response while ponderosa pine generally had low or negative response. Response results for Douglas-fir were inconsistent by site and therefore species specific trends could not be concluded.

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Title:
Two Year Basal Area Response to N and S Fertilization for Mixed Conifer in Northeast Oregon and Southeast Washington (Umatilla)
Creator:
Terry M. Shaw; James A. Moore
Date Created (ISO Standard):
1995-04-18
Description:
Two years after fertilizer treatments were applied, the overall adjusted relative gross basal area response increased 3.1% on those plots receiving 200 lb. nitrogen (N) acre and 17.0% on those plots receiving 200 lb. N acre plus 100 lb. sulphur (S) acre. Nitrogen versus S growth response differs by geographic location with the Pomeroy, Tollgate and Ukiah sites having good N response but little or no S response, while growth response on the Heppner sites were low for N but increased significantly when S was added to the fertilizer treatment. Results from this study also show growth response is different by species, with grand fir expressing higher relative response than western larch or ponderosa pine for both N and N plus S (NS) treatments. Engelmann spruce and lodgepole expressed good relative response while ponderosa pine generally had low or negative response. Response results for Douglas-fir were inconsistent by site and therefore species specific trends could not be concluded.
Location:
North and Central Idaho Eastern Washington Western Montana Northeastern Oregon
Source:
Shaw, T.M. and J.A. Moore, 1995. Two year basal area response to N and S fertilization for mixed conifer in northeast Oregon and southeast Washington (Umatilla). FWR, Univ. of Idaho, Moscow, 29 p.
Source Identifier:
1995_Shaw, T.M. and J.A. Moore, 1995. 2YR basal area response. FWR, Univ. of Idaho, Moscow, 29p.
Type:
Text
Format:
application/pdf

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Preferred Citation:
"Two Year Basal Area Response to N and S Fertilization for Mixed Conifer in Northeast Oregon and Southeast Washington (Umatilla)", Intermountain Forestry Cooperative, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iftnc/items/iftnc3363.html
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Standardized Rights:
This document is provided by the University of Idaho Library for use by University of Idaho students, staff, and faculty. All rights to the document linked from this metadata belong to the author, rights holder, and/or provider. For more information contact The Intermountain Forestry Cooperative, https://www.uidaho.edu/cnr/ifc
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