Relationships between macro- and micronutrient nutrition of slash pine on three coastal plain soils

Slash pine seedlings on Bladen, Leon, and Lakeland soils responded differently to P and N fertilization. Seedling growth was increased by all treatments on Bladen soil, whereas responses by seedlings on the other soils were nil. All soils were low in extractable P with both Bladen and Lakeland yield...

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Bibliographic Details
Published in:Plant and soil 1972-02, Vol.36 (2), p.331-347
Main Authors: Van Lear, D.H, Smith, W.H
Format: Article
Language:English
Subjects:
Coastal plain soils
Forest soils
Micronutrients
Pine trees
Pinus elliottii
Sandy loam soils
Seedlings
Soil fertility
Soil toxicity
Soil treatment
Toxicity
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Summary:Slash pine seedlings on Bladen, Leon, and Lakeland soils responded differently to P and N fertilization. Seedling growth was increased by all treatments on Bladen soil, whereas responses by seedlings on the other soils were nil. All soils were low in extractable P with both Bladen and Lakeland yielding 0.85 ppm P. Growth response to fertilizer was positive on Bladen soil because soil and tissue levels of P were raised above "critical" levels and other nutrients were present in adequate quantities. Tissue analyses indicated, and subsequent experiments utilizing macro- and micronutrients proved, that excess P applications reduced certain micronutrients to growth-limiting levels on both Leon and Lakeland soils. Best growth on Leon soil occurred when P and N were supplemented with Cu. On the Lakeland soil macronutrients supplemented with Cu, Mn, or Zn produced greatest growth. Toxicity levels of five micronutrients on the latter soil also were determined.
ISSN:0032-079X
1573-5036
DOI:10.1007/BF01373488