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    Author(s): A.E. Tiarks; E. Shoulders
    Date: 1982
    Source: Res. Note SO-285. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.
    Publication Series: Research Note (RN)
    Station: Southern Forest Experiment Station
    PDF: View PDF  (117 KB)

    Description

    In southern Mississippi, the heights of loblolly and slash pines at age 20 were positively correlated with the phosphorus content of the foliage and with depth in the soil to gray (chromas £2) mottles. Slash pine was taller than loblolly at equivalent levels of foliage phosphorus, but the rate of height increase as foliage phosphorus increased was the same for both species. Neither species was productive when the winter water table was at the surface. Phosphorus soil tests were not useful in predicting height even though phosphorus was a growth limiting nutrient. As the available phosphorus content of the soils studied is very low, the soil depth or volume of soil available for root exploration is more important than small differences in soil phosphorus.

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    Citation

    Tiarks, A.E.; Shoulders, E. 1982. Effects of Shallow Water Tables on Height Growth and Phosphorus Uptake by Loblolly and Slash Pines. Res. Note SO-285. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.

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    Keywords

    Gray mottles, phosphorus soil test, soil-site, soil water

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