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    Author(s): James B. Baker; R. H. Brendemuehl
    Date: 1972
    Source: Soil Science Society of America Proceedings 36(4):666-667
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Forest Experiment Station
    PDF: Download Publication  (194.67 KB)


    A greenhouse study was conducted to determine the level of soil P adequate for satisfactory growth of Ocala sand pine (Pinus clausa (Chapm.) Vasey) seedlings. Various quantities of Lakeland sand with low and high P contents were blended to provide soil mixtures with a range of available P. Ocala sand pine seedlings were grown in these mixtures for 10 months. On the basis of. the seedlings' dry matter production, the level of soil P adequate for satisfactory growth of Ocala sand pine is in the neighborhood of 1 ppm available [NH4OAc (pH 4.8) -extractable] P. Seedlings growing in soils containing <1 ppm available P showed a marked reduction in dry weight. Tissue analyses indicate that concentrations of foliar P of < 0.15% may denote a deficiency of available soil P.

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    Baker, James B.; Brendemuehl, R. H. 1972. Soil Phosphorus Level Adequate for Growth of Ocala Sand Pine Seedlings, A Greenhouse Evaluation. Soil Science Society of America Proceedings 36(4):666-667.


    optimum foliar P, P-deficient soils, soil P uptake, sandhills soil

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