De Neve, S. et al., Using time domain reflectometry for monitoring mineralization of nitrogen from soil organic matter, Eur. J. Soil Sci., 51, 295, 2000. Doran, J.W. et al., Influence of cropping/tillage management on soil fertility and quality of former CRP land in the central High Plains, in Great Plains Soil Fertility Conf. Proc., Potash & Phosphate Institute, Vol. 6, Havlin, J.L., Ed., Manhattan, KS, 1996, 205. Eigenberg, R.A., Korthals, R.L., and Nienaber J.A., Electromagnetic survey methods applied to agricultural waste sites, ASAE Paper No. 963014, Am. Soc. Agric. Eng., St. Joseph, MI, 1996. Eigenberg, R.A. et al., Soil conductivity maps for monitoring temporal changes in an agronomic field, in Proc. 8th Int. Symp. Animal Agri. Food Proc. Wastes (ISAAFPW), Moore, J., Ed., Am. Soc. Agric. Eng., St. Joseph, MI, 2000, 249.

Eigenberg, R.A., et al., Soil conductivity as a measure of soil and crop status—A four year summary. Soil Sci.

Soc. Am. J., 70, 1600-1611, 2006. Ferguson, R.B. et al., Long-term effects of beef feedlot manure application on soil properties and accumulation and transport of nutrients, in Proc. 9th Int. Symp. Animal, Agric. Food Proc. Wastes (ISAAFPW), Raleigh, NC, October 11-14, 2003, Am. Soc. Agric. Eng., St. Joseph, MI, 1. Johnson, C.K. et al., Status of soil electrical conductivity studies by central state researchers, ASAE Paper No.

032339, Am. Soc. Agric. Eng., St. Joseph, MI, 2003. McKenzie, R.C., Chomistek, W., and Clark, N.F., Conversion of electromagnetic induction readings to saturated paste extract values in soils for different temperature, texture, and moisture conditions. Can. J. Soil Sci, 69, 25, 1989.

McNeill, J.D., Use of electromagnetic methods for groundwater studies, in Investigations in Geophysics No. 5, Ward, S.H., Ed., Geotechnical and Environmental Geophysics, Society of Exploration Geophysicists, Tulsa, OK, 1990, 191.

Ritchie, S.W., Hanway, J.J., and Benson, G.O., How a corn plant develops, Special Report No. 48. Herman, J.,

Ed., Iowa State Univ. Sci. Technol., Coop. Ext. Serv., Ames, IA, 1986. Smith, J.L. and Doran, J.W., Measurement and use of pH and electrical conductivity for soil quality analysis, in Methods for Assessing Soil Quality, SSSA Spec. Publ. 49, Doran, J.W. and Jones, A.J., Eds., Soil Sci. Soc. Am, Madison, WI, 1996, 169.

20 Soil ECa Mapping Helps Establish Research Plots at a New Research and Extension Center

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