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Notes: Genotype and Moisture Supply Influence Nutrient Content of Eastern Cottonwood Foliage

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Nitrogen, phosphorus, and potassium contents of the foliage of young eastern cottonwood (Populus deltoides Bartr.) varied significantly by clone. The soil moisture stress under which the leaves developed significantly influenced foliar nitrogen and phosphorus concentrations. Fast-growing clones tended to contain lower proportions of leaf nitrogen than slow-growing clones. Apparently, genotype and moisture supply are important considerations where foliar concentrations are used as indicators of nutrient needs.

Keywords: Populus deltoides; foliar analysis

Document Type: News

Affiliations: Plant Physiologist, Tree Improvement Section, Division of Forestry Development, Tennessee Valley Authority, Norris, Tenn.

Publication date: March 1, 1969

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