2008 Joint Annual Meeting (5-9 Oct. 2008): Grazed Pasture Soil Temporal Variability.
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708-7 Grazed Pasture Soil Temporal Variability.



Wednesday, 8 October 2008
George R. Brown Convention Center, Exhibit Hall E
Solomon Kariuki1, Hailin Zhang2, Jackie L. Schroder3, Joshua McGrath4 and Jamie Mundy1, (1)Environmental Science and Technology, University of Maryland, 1109 H.J. Patterson Building, College Park, MD 20742
(2)368 Agriculture Hall, Oklahoma State University, Oklahoma State University, Plant & Soil Sci Dept., Stillwater, OK 74078
(3)Oklahoma State University, Plant and Soil Sciences Dept., Stillwater, OK 74078
(4)0214 H.J. Patterson Hall, Bldg. 073, University of Maryland, University of Maryland, Dept. of Environmental Science & Technology, College Park, MD 20742-5825
Temporal variability in soil test results may influence when producers can accurately sample their fields to guide fertilization or for regulatory compliance. The objective of this study was to determine the effect of temporal variability on soil tests in a pasture system. Soil samples were collected from two sites; a 6 ha pasture without manure and a 4 ha pasture that received manure. Samples were analyzed for soil pH, inorganic N, and Mehlich 3 phosphorus and potassium. Time of sampling had the strongest influence on nitrogen, while all other soil properties measured were found to remain relatively constant throughout the year. Therefore, not only method of sampling, but also sampling time should be considered relative to sampling objectives.
See more of: Symposium --Soils as a Critical Component of Sustainable Development and Society: II (Posters)
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