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Circular 1230: Using Soils to Guide Fertilizer Recommendations for Southern Pines

Figure 4. Examples of dramatic phosphorus responses of loblolly pine growing on CRIFF A group soils. The two pictures came from the same stand, with the top picture being the control plot (no fertilizer added) and the bottom picture depicting the plot fertilized with 50 lbs/ac P at time of planting. The site had no prior fertilizer history.