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    Author(s): Finto Antony; Lewis Jordan; Richard F. Daniels; Laurence R. Schimleck; Alexander Clark III; Daniel B. Hall
    Date: 2009
    Source: Journal article Canadian Journal of Forest Research 39: 928-935.
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (107.84 KB)


    Wood properties and growth were measured on breast-height cores and on disks collected at different heights from a thinned and fertilized midrotation loblolly pine (Pinus taeda L.) plantation in the lower Coastal Plain of North Carolina. The study was laid out in a randomized complete-block design receiving four levels of nitrogen (N) fertilizer: unfertilized control and 112,224, and 336 kg/ha plus 28 kg/ha of phosphorus with each treatment. The effect of fertilization was analyzed for the whole-disk and for a 4 year average following fertilization on data collected from breast-height cores and from disks. The fertilization treatments did not significantly affect whole-disk wood properties but significantly increased radial growth. Fertilization rate of 336 kg/ha N significantly reduced 4 year average ring specific gravity and latewood specific gravity. Wood properties of trees that received 112 and 224 kg/ha N were not affected following treatment. There was no height related trend in wood property changes due to fertilization. Fertilization significantly increased ring basal area and earlywood basal area. In summary, there was a decline in wood properties and an increase in basal area growth immediately after fertilization; both depended on the rate of fertilizer applied irrespective of height.

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    Antony, Finto; Jordan, Lewis; Daniels, Richard F.; Schimleck, Laurence R.; Clark III, Alexander; Hall, Daniel B. 2009. Effect of midrotation fertilization on growth and specific gravity of loblolly pine. Canadian Journal of Forest Research 39: 928-935.


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