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Foliar Fertilization During Bud Initiation Improves Container-Grown Ponderosa Pine Seedling Viability

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Our objective was to determine if avoiding nutrient stress during bud initiation of ponderosa pine (Pinus ponderosa vat. ponderosa) grown in a container nursery would enhance seedling viability. Nitrogen stress was avoided by applying foliar fertilizer at rates between 324 and 972 ppm N to greenhouse-grown seedlings. Foliar fertilization maintained higher seedling nitrogen levels and increased root collar diameter by 45%. Height was slightly increased, cold-hardiness slightly reduced, and root growth potential unaffected by foliar fertilizer applications. Nursery managers can improve seedling viability by adding foliar fertilizer applications to their growing regimes. West. J. Appl. For. 11(4):114-119.

Document Type: Journal Article

Affiliations: Department of Forest Resources, Research Nursery, University of Idaho, Moscow, Idaho 83844-1137

Publication date: October 1, 1996

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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