1. Home
  2. Items
  3. Four-Year Foliar and Growth Response to Multinutrient Fertilization in Northeast...
PDF

Four-Year Foliar and Growth Response to Multinutrient Fertilization in Northeast Oregon Item Info

Results from this study show foliar nutrient deficiencies and multi-nutrient fertilization response for ponderosa pine, grand fir and Douglas-fir over a period of four consecutive growing seasons. Generally, through critical level or vector foliar diagnosis, N, S, B, Cu and possibly Mo were identified as being deficient for all species in this study. Additionally, Douglas-fir on the Noregaard site showed foliar K deficiency response. Distinct foliar nutrient response patterns were observed for those strong responding nutrients, particularly N and B where foliar response increased, peaked then declined in magnitude relative to the control as the year since fertilization increased. Delayed nutrient response may have been to spring fertilizer application not having manifested itself in time to show strong nutrient response one growing season after fertilization. Similar to foliar nutrient response, foliar needle weight growth increased, peaked then declined in magnitude relative to the control as the year since fertilization increased. Additionally, needle weight response was delayed due to spring fertilization. Needle weight response was significant for ponderosa pine and Douglas-fir but not for grand fir. Overall, four-year cubic foot volume response was significantly higher on the multi-nutrient treatment than the controls, with relative gross cubic foot volume response for both sites combined showing a 26.9% increase. Individual site response revealed that much of the combined relative cubic foot volume response was expressed on the Clear Creek site, which showed a 34% increase over the controls while the Noregaard site only showed a 3.9% increase. Periodic relative gross basal area response for both sites combined was greater in the first two-year period (26.9%) than the second two-year period (11.1%). Periodic relative basal area response for the Clear Creek unit was 32% the first two-year period and 23% the second two-year period while the Noregaard site response was 18.6% the first period and 6.5% the second.

View on Timeline Download PDF
Title:
Four-Year Foliar and Growth Response to Multinutrient Fertilization in Northeast Oregon
Creator:
Shaw, T.M.; Moore, J.A.
Date Created (ISO Standard):
2000-03-01
Description:
Results from this study show foliar nutrient deficiencies and multi-nutrient fertilization response for ponderosa pine, grand fir and Douglas-fir over a period of four consecutive growing seasons. Generally, through critical level or vector foliar diagnosis, N, S, B, Cu and possibly Mo were identified as being deficient for all species in this study. Additionally, Douglas-fir on the Noregaard site showed foliar K deficiency response. Distinct foliar nutrient response patterns were observed for those strong responding nutrients, particularly N and B where foliar response increased, peaked then declined in magnitude relative to the control as the year since fertilization increased. Delayed nutrient response may have been to spring fertilizer application not having manifested itself in time to show strong nutrient response one growing season after fertilization. Similar to foliar nutrient response, foliar needle weight growth increased, peaked then declined in magnitude relative to the control as the year since fertilization increased. Additionally, needle weight response was delayed due to spring fertilization. Needle weight response was significant for ponderosa pine and Douglas-fir but not for grand fir. Overall, four-year cubic foot volume response was significantly higher on the multi-nutrient treatment than the controls, with relative gross cubic foot volume response for both sites combined showing a 26.9% increase. Individual site response revealed that much of the combined relative cubic foot volume response was expressed on the Clear Creek site, which showed a 34% increase over the controls while the Noregaard site only showed a 3.9% increase. Periodic relative gross basal area response for both sites combined was greater in the first two-year period (26.9%) than the second two-year period (11.1%). Periodic relative basal area response for the Clear Creek unit was 32% the first two-year period and 23% the second two-year period while the Noregaard site response was 18.6% the first period and 6.5% the second.
Subjects:
research fertilizer timber (lumber) statistics
Source:
Shaw, T.M. and J.A. Moore. 2000. Four-Year Foliar and Growth Response to Multi-Nutrient Fertilization in Northeast Oregon. IFTNC, College of Natural Resources, Univ. of Idaho, Moscow.
Source Identifier:
Four-year_Foliar_and_Growth_Response_to_Multinutrient_Fertilization_in_Northeast_Oregon_IFTNC_2000
Type:
Text
Format:
application/pdf

Contact us about this record

Source
Preferred Citation:
"Four-Year Foliar and Growth Response to Multinutrient Fertilization in Northeast Oregon", Intermountain Forestry Cooperative, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iftnc/items/iftnc4838.html
Rights
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
Standardized Rights:
http://rightsstatements.org/vocab/InC-EDU/1.0/
« Previous Back to Browse Next »