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Vector Diagnosis of Container-grown Ponderosa Pine Nutrient Status 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 in the growing media at rates of 0.8, 1.6 or 3.2 grams per seedling as supplements to nursery supplied soluble fertilizer. Effects on seedling foliar and root nutrient status of'160/90' container ponderosa pine (Pinus ponderosa Doug. ex Laws) in the greenhouse were evaluated using graphical vector analysis. Treatment FR-0.8 produced the largest increase in foliage mass (238%) and root mass (169%) of all treatments while maintaining a nearly 'steady-state' condition. The 'steady-state' vectors resulting from treatment FR-0.8 indicate that nutrients were supplied in sufficient amounts to support the higher growth rates and increased biomass accumulation compared to the controls since nutrient contents increased in proportion to biomass. Some slow release fertilizers applied at higher rates, when combined with the existing nursery fertilization schedules, produced seedlings with poor nutritional balance in both foliage and roots. These treatments were readily detected with nutrient vector analysis and the technique proved to be effective in assisting the development of nursery fertilization regimes.

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Title:
Vector Diagnosis of Container-grown Ponderosa Pine Nutrient Status with Controlled-release Fertilizer Incorporated in the Root Plug
Creator:
Moore, J.A.; Fan, Z.
Date Created (ISO Standard):
2000-03-01
Description:
Prior to sowing seeds, three controlled-release fertilizers (fast release (FR), moderate release (MR) and slow release (SR)) were incorporated in the growing media at rates of 0.8, 1.6 or 3.2 grams per seedling as supplements to nursery supplied soluble fertilizer. Effects on seedling foliar and root nutrient status of'160/90' container ponderosa pine (Pinus ponderosa Doug. ex Laws) in the greenhouse were evaluated using graphical vector analysis. Treatment FR-0.8 produced the largest increase in foliage mass (238%) and root mass (169%) of all treatments while maintaining a nearly 'steady-state' condition. The 'steady-state' vectors resulting from treatment FR-0.8 indicate that nutrients were supplied in sufficient amounts to support the higher growth rates and increased biomass accumulation compared to the controls since nutrient contents increased in proportion to biomass. Some slow release fertilizers applied at higher rates, when combined with the existing nursery fertilization schedules, produced seedlings with poor nutritional balance in both foliage and roots. These treatments were readily detected with nutrient vector analysis and the technique proved to be effective in assisting the development of nursery fertilization regimes.
Subjects:
research (document genres) roots (plant components) trees statistics
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
Intermountain Forest Tree Nutrition Cooperative, University of Idaho, College of Forest, Wildlife and Range Sciences, Moscow
Source:
Moore, J.A. and Z. Fan. 2000. IFTNC Supplemental Report No. 2. Vector Diagnosis of Container-Grown Ponderosa Pine Nutrient Status with Controlled-Release Fertilizer Incorporated in the Root Plug. IFTNC, College of Natural Resources, Univ. of Idaho, Moscow.
Source Identifier:
Vector_Diagnosis_Container-grown_PP_Nutrient_Status_with_Controlled-Release_Fert_Inc_Root_Plug_IFTNC_2000
Type:
text
Format:
application/pdf

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Preferred Citation:
"Vector Diagnosis of Container-grown Ponderosa Pine Nutrient Status 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/forestryresearch939.html
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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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