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Growth and Nutrition of Container-Grown Ponderosa Pine Seedlings with Controlled-Release Fertilizer Incorporated in the Root Plug Item Info

Prior to sowing seeds, three controlled-release fertilizers (fast release (FR), moderate release (MR) and slow release (SR)) were incorporated into the growing media at rates of 0.8, 1.6 or 3.2 g as supplements to nursery supplied soluble fertilizer to grow containerized ponderosa pine (Pinus ponderosa Doug. ex Laws) seedlings in the greenhouse. At lifting, the stem diameter, height and total mass of fertilized seedlings ranged from 14 to 29%, 15 to 22%, and 39 to 100% larger than those of the unfertilized seedlings, respectively. FR provided more balanced nutrients than did MR or SR. The root growth potentials of ponderosa pine treated with 3.2 g of MR or SR were much lower than those of other treatments, indicating that a 3.2 g rate of MR or SR was too high for the seedlings. The estimated best dosages for maximum caliper and height growth were 0.8, 2.2 and 2.0 g for FR, MR and SR fertilizers, respectively.

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Title:
Growth and Nutrition of Container-Grown Ponderosa Pine Seedlings with Controlled-Release Fertilizer Incorporated in the Root Plug
Creator:
Fan, Z.; Moore, J.A.; Wenny, D.L.
Date Created (ISO Standard):
2003-04-22
Description:
Prior to sowing seeds, three controlled-release fertilizers (fast release (FR), moderate release (MR) and slow release (SR)) were incorporated into the growing media at rates of 0.8, 1.6 or 3.2 g as supplements to nursery supplied soluble fertilizer to grow containerized ponderosa pine (Pinus ponderosa Doug. ex Laws) seedlings in the greenhouse. At lifting, the stem diameter, height and total mass of fertilized seedlings ranged from 14 to 29%, 15 to 22%, and 39 to 100% larger than those of the unfertilized seedlings, respectively. FR provided more balanced nutrients than did MR or SR. The root growth potentials of ponderosa pine treated with 3.2 g of MR or SR were much lower than those of other treatments, indicating that a 3.2 g rate of MR or SR was too high for the seedlings. The estimated best dosages for maximum caliper and height growth were 0.8, 2.2 and 2.0 g for FR, MR and SR fertilizers, respectively.
Subjects:
research (document genres) roots (plant components) fertilizer timber (lumber) statistics
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
Annals of Forest Science
Source:
Fan, Z., J.A. Moore, and D.L. Wenny. 2004. Growth and nutrition of container-grown ponderosa pine seedlings with controlled-release fertilizer incorporated in the root plug. Annals of For Sci 61:117-124.
Source Identifier:
Growth_and_Nutrition_of_Container-grown_PP_Seedlings_with_Controlled-Release_Fert_Inc_in_the_Root_Plug_AFS_061_2004
Type:
Text
Format:
application/pdf

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Source
Preferred Citation:
"Growth and Nutrition of Container-Grown Ponderosa Pine Seedlings with Controlled-Release Fertilizer Incorporated in the Root Plug", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch937.html
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Rights:
Educational use includes non-commercial use of text and images in materials for teaching and research purposes. Digital reproduction rights granted by University of Idaho Library. For other uses beyond educational use, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
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