Foliar Analysis For Predicting Loblolly Pine Response To Phosphurus Fertilization on Wet Sites

Abstract

Loblolly pine (Pinus taeda L.) planted in the South Carolina Coastal Plain on wetsites which had been ditched and bedded responded to P fertilization. Under conditions of severe P deficiency) tree height increased 82 percent in 3 years from application of 25 or 50 pounds of P per acre at planting. First-year growth data from four sites show that a response to P fertilization should be expected when needle content is less than 0.11 percent P 1 year after planting. As P content of the needles decreases below this level, response increases.

Citation

Wells, Carol G.; Crutchfield, D.M. 1969. Foliar Analysis For Predicting Loblolly Pine Response To Phosphurus Fertilization on Wet Sites. Res. Note SE-128. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.