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 Related articles in JEQ Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed 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 (5) Citing Articles via Google Scholar Google Scholar Articles by Slaton, N. A. Articles by Miller, D. M. Search for Related Content PubMed PubMed Citation Articles by Slaton, N. A. Articles by Miller, D. M. Agricola Articles by Slaton, N. A. Articles by Miller, D. M. Related Collections Land-use Planning Nutrient Management

ENVIRONMENTAL ISSUES

Nutrient Input and Removal Trends for Agricultural Soils in Nine Geographic Regions in Arkansas

^a Department of Crop, Soil and Environmental Sciences, 115 Plant Science Building, Fayetteville, AR 72701
^b University of Arkansas Cooperative Extension Service, P.O. Box 351, Little Rock, AR 72204

^* Corresponding author (nslaton{at}uark.edu).

Received for publication December 17, 2003. Knowledge of the balance between nutrient inputs and removals is required for identifying regions that possess an excess or deficit of nutrients. This assessment describes the balance between the agricultural nutrient inputs and removals for nine geographical districts within Arkansas from 1997 to 2001. The total N, P, and K inputs were summed for each district and included inorganic fertilizer and collectable nutrients excreted as poultry, turkey, dairy, and hog manures. Nutrients removed by harvested crops were summed and subtracted from total nutrient inputs to calculate the net nutrient balance. The net balances for N, P, and K were distributed across the hectarage used for row crop, hay, pasture, or combinations of these land uses. Row-crop agriculture predominates in the eastern one-third and animal agriculture predominates in the western two-thirds of Arkansas. Nutrients derived from poultry litter accounted for >92% of the total transportable manure N, P, and K. The three districts in the eastern one-third of Arkansas contained 95% of the row-crop hectarage and had net N and P balances that were near zero or negative. The six districts in the western two-thirds of Arkansas accounted for 89 to 100% of the animal populations, had positive net balances for N and P, and excess P ranged from 1 to 9 kg P ha^–1 when distributed across row-crop, hay, and pasture hectarage. Transport of excess nutrients, primarily in poultry litter, outside of the districts in western Arkansas is needed to achieve a balance between soil inputs and removals of P and N.

Related articles in JEQ:

This Issue in Journal of Environmental Quality

JEQ 2004 33: 1589-1599. [Full Text]  

This article has been cited by other articles:

				J. Siemens, K. Ilg, H. Pagel, and M. Kaupenjohann Is Colloid-Facilitated Phosphorus Leaching Triggered by Phosphorus Accumulation in Sandy Soils? J. Environ. Qual., October 23, 2008; 37(6): 2100 - 2107. [Abstract] [Full Text] [PDF]

				M. P. Russelle, M. H. Entz, and A. J. Franzluebbers Reconsidering Integrated Crop-Livestock Systems in North America Agron. J., February 6, 2007; 99(2): 325 - 334. [Abstract] [Full Text] [PDF]

				B. R. Golden, N. A. Slaton, R. J. Norman, E. E. Gbur Jr., K. R. Brye, and R. E. DeLong Recovery of Nitrogen in Fresh and Pelletized Poultry Litter by Rice Soil Sci. Soc. Am. J., June 21, 2006; 70(4): 1359 - 1369. [Abstract] [Full Text] [PDF]

				K. R. Brye, B. Golden, and N. A. Slaton Poultry Litter Decomposition as Affected by Litter Form and Rate before Flooding for Rice Production Soil Sci. Soc. Am. J., May 23, 2006; 70(4): 1155 - 1167. [Abstract] [Full Text] [PDF]