HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (9) Citing Articles via Google Scholar Google Scholar Articles by Gurlevik, N. Articles by Allen, H. L. Search for Related Content PubMed Articles by Gurlevik, N. Articles by Allen, H. L. Agricola Articles by Gurlevik, N. Articles by Allen, H. L. Related Collections Nitrogen Nutrient Cycling Forest Soils

DIVISION S-7—FOREST & RANGE SOILS

Nitrogen Mineralization Following Vegetation Control and Fertilization in a 14-Year-Old Loblolly Pine Plantation

^a Suleyman Demirel Univ., Faculty of Forestry, 32260 Isparta, Turkey
^b Adirondack Watershed Institute, Paul Smith's College, Routes 86 & 30, P.O. Box 265, Paul Smiths, NY 12970
^c Dep. of Forestry, 3108 Jordan Hall, College of Natural Resources, North Carolina State Univ., Raleigh, NC 27695

^* Corresponding author (keltind{at}paulsmiths.edu).

Vegetation control (VC) and fertilization (FR) can change N availability in southern pine plantations, but the magnitude, duration, and reasons for change are not fully understood. The effects of a factorial combination of vegetation control (none vs. complete) and fertilization (none vs. 224 kg N ha^–1 and 56 kg P ha^–1) on net N mineralization and soil temperature and moisture were investigated in a 14-yr-old loblolly pine (Pinus taeda L.) plantation located on the Piedmont of North Carolina. Net N mineralization and soil temperature and moisture were measured monthly for 2 yr beginning in July 1998, four months after the treatments were applied. A companion aerobic laboratory incubation study of field-moist soil was conducted at 28°C during the second year. Vegetation control increased soil temperature by 1.8°C during the growing season. Both vegetation control and fertilization increased field net N mineralization, and there was a strong positive interaction between the treatments. Net nitrification constituted 72% of net N mineralization for the combined treatment, and only 8% of net N mineralization for the other treatments. Seasonal patterns in net N mineralization were poorly correlated with soil temperature and moisture. The field and laboratory studies showed the same seasonal dynamics and magnitude of annual treatment effects on net N mineralization, suggesting other factors (e.g., labile C inputs) may be important in controlling net N mineralization.

Abbreviations: CO, control • FR, fertilization • TSP, triple super phosphate • VC, vegetation control • VC + FR, vegetation control + fertilization

This article has been cited by other articles:

				M. A. Blazier, L. A. Gaston, T. R. Clason, K. W. Farrish, B. P. Oswald, and H. A. Evans Nutrient Dynamics and Tree Growth of Silvopastoral Systems: Impact of Poultry Litter J. Environ. Qual., June 23, 2008; 37(4): 1546 - 1558. [Abstract] [Full Text] [PDF]

				D. V. Sarkhot, N. B. Comerford, E. J. Jokela, J. B. Reeves III, and W. G. Harris Aggregation and Aggregate Carbon in a Forested Southeastern Coastal Plain Spodosol Soil Sci. Soc. Am. J., September 28, 2007; 71(6): 1779 - 1787. [Abstract] [Full Text] [PDF]

				M. M. Mikha, C. W. Rice, and J. G. Benjamin Estimating Soil Mineralizable Nitrogen under Different Management Practices Soil Sci. Soc. Am. J., August 3, 2006; 70(5): 1522 - 1531. [Abstract] [Full Text] [PDF]