Fertilization Increases Growth of Loblolly Pine and Ground Cover Vegetation on a Cecil Soil
Abstract:Application of 198 kg-N/ha, 7 kg-P/ha, and 26 kg-K/ha over a 2-year period increased growth of 4-year-old loblolly pine (Pinus taeda) as well as biomass production of ground cover vegetation on a Cecil sandy clay soil on a piedmont site in North Carolina. Four fertilized and four unfertilized loblolly pines were destructively sampled to monitor aboveground dry weights of tree components. Ground cover biomass and soil nutrient content were measured on 2-m-square plots located around each of the eight pines examined. Loblolly pine diameter and volume growth were increased by fertilization as well as oven-dry weight of foliage and stem, needle length, and oven-dry weight per 100 fascicles of current year's needles. Fertilization altered the composition of ground cover species present with fewer species observed on fertilized than on check plots. Although the number of species present on the fertilized plots was fewer, the total biomass production of ground cover vegetation was 30 percent greater on the fertilized than on the check plots. Forest Sci. 25:169-174.
Document Type: Journal Article
Affiliations: Graduate Research Assistant, North Carolina State Forest Fertilization Cooperative, School of Forest Resources, N.C. State University, Raleigh, N.C. 27650
Publication date: 1979-03-01
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