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Growth and nutrient use efficiency of water tupelo seedlings in flooded and well-drained soilAuthor(s): Martha R. McKevlin; Donal D. Hook; William H. Jr. McKee
Source: Tree Physiology
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
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DescriptionGrowth characteristics and nutrient utilization rate of Nyssa aquatica L. seedlings grown in pots containing flooded or well-drained soil were compared in a greenhouse study. For most of the growing season, relative height and diameter growth rates, and biomass accumulation rates were greater for seedlings in flooded soil than for seedlings in well-drained soil. The concentration of Fe in the roots of seedlings in flooded soil was almost tenfold greater than that of seedlings in well-drained soil. However, flooding had no effect on foliar Fe concentrations. The flooding treatment resulted in decreased concentrations of N in all component parts and increased concentrations of P in the roots and stem, but it had no effect on foliar P concentrations. In response to flooding, foliar K concentrations decreased, whereas the concentration of K in the roots increased. Flooding had no effect on the K concentration of the stem. Seedlings in flooded soil produced more total biomass per milligram of nutrient absorbed than seedlings in well-drained soil, suggesting that N. aquatica seedlings are more efficient at producing biomass and height growth under hydric conditions than under mesic conditions.
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CitationMcKevlin, Martha R.; Hook, Donal D.; McKee, William H. Jr. 1995. Growth and nutrient use efficiency of water tupelo seedlings in flooded and well-drained soil. Tree Physiology.15: 753-758.
Keywordshydric, mesic, nutrient uptake, Nyssa aquatica rhizasphere oxidation, stem hypertrophy
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