Bouma, J., Finke, P.A. 1993. Origin and nature of soil resource variability. p. 3-4. In P.C. Robert, R.H. Rust,

W.E. Larson (ed.) Soil Specific Crop Management, ASA-CSSA-SSSA, Madison, WI. Cambardella, C.A., Moorman, T.B., Novak, J.M., Parkin, T.B., Karlen, D.L., Turco, R.F., Konopka, A.E. 1994.

Field-scale variability of soil properties in central Iowa Soils. Soil Sci. Soc. Am. J. 58, 1502-1511. Corwin, D.L., Kaffka, S.R., Hopmans, J.W., Mori, Y., van Groenigen, J.W., van Kessel, C., Lesch, S.M., Oster, J.D. 2003a. Assessment and field-scale mapping of soil quality properties of a saline-sodic soil. Geo-derma. 1052, 1-29.

Corwin, D.L., Lesch, S.M., Shouse, P.J., Soppe, R., Ayars J.E. 2003b. Identifying soil properties that influence cotton yield using soil sampling directed by apparent soil electrical conductivity. Agron. J. 95, 352-364.

Corwin, D.L. Lesch, S.M., Oster, J.D., Kaffka, S.R. 2005. Monitoring spatio-temporal changes in soil quality through soil sampling directed by apparent management-induced electrical conductivity. Geoderma. 131, 369-387.

Drinkwater, L.E. 2002. Cropping systems research: Reconsidering agricultural experimental approaches.

Horttechnology. 12, 355-361. ERDAS. 1997. ERDAS Field Guide. pp. 225-232. ERDAS, Inc., Atlanta, GA.

Jaynes, D.B., Colvin, T.S., Ambuel, J. 1993. Soil type and crop yield determinations from ground conductivity surveys. Paper no. 933552. Am. Soc. Agric. Eng. St. Joseph, MI: ASAE, Winter 1993. Jenny, H. 1941. Factors of soil formation—A system of quantitative pedogenesis—A review. McGraw-Hill, New York.

Johnson, C.K., Doran, J.W., Duke, H.R., Wienhold, B.J., Eskridge, K.M., Shanahan, J.F. 2001. Field-scale electrical conductivity mapping for delineating soil condition. Soil Sci. Soc. Amer. J. 65, 1829-1837. Johnson, C.K., Eskridge, K.M., Wienhold, B.J., Doran, J.W., Peterson, G.A., Buchleiter, G.W. 2003a. Using electrical conductivity classification and within-field variability to design field-scale research. Agron. J. 95, 602-613.

Johnson, C.K., Mortensen, D.A., Wienhold, B.J., Shanahan, J.F., Doran, J.W. 2003b. Site-specific management zones based on soil electrical conductivity in a semiarid cropping system. Agron. J. 95, 303-315. Johnson, C.K., Wienhold, B.J., Doran, J.W, Drijber, R.A., Wright, S.F. 2004. Linking microbial-scale findings to farm-scale outcomes. Precision Agric. 5, 311-328. Johnson, C.K., Eskridge, K.M., Corwin, D.L. 2005. Apparent soil electrical conductivity: Applications for designing and evaluating field-scale experiments. Comput. Electron. Agric. 46, 181-202. Kitchen, N.R., Sudduth, K.A., Drummond, S.T. 1999. Soil electrical conductivity as a crop productivity measure for claypan soils. J. Prod. Agric. 12, 607-617. Kitchen, N.R., Drummond, S.T., Lund, E.D., Sudduth, K.A., Buchleiter, G.W. 2003. Soil electrical conductivity and topography related to yield for three contrasting soil-crop systems. Agron. J. 95, 483-495. Kitchen, N.R., Sudduth, K.A., Myers, D.B., Drummond, S.T., Hong, S.Y. 2005. Delineation of productivity zones on claypan soil fields using bulk soil electrical conductivity. Comput. Electron. Agric. 46, 385-308. McCann, B.L., Pennock, D.J., van Kessel, C., Walley, F.L. 1996. The development of management units for site-specific farming. pp. 296-302. In Proc. 3rd Int. Conf. on Precision Agriculture, St. Paul, MN, 23-26 June 1996, ASA, CSSA, SSSA, Madison, WI. Peterson, G.A., Westfall, D.G., Cole, C.V. 1993. Agroecosystem approach to soil and crop management research. Soil Sci. Soc. Amer. J. 57, 1354-1360.

Rhoades, J.D., Manteghi, N.A., Shouse, P.J., Alves, W.J. 1989. Soil electrical conductivity and soil salinity: New formulations and calibrations. Soil Sci. Soc. Am. J. 53, 433-439.

Rzewnicki, P. 1991. Farmer's perceptions of experiment station research, demonstrations, and on-farm research in agronomy. J. Agron. Educ. 20, 31-36.

SAS Institute. 1997. SAS/STAT Software: Changes and enhancements through Release 6.12. SAS Inst., Cary, NC.

Sudduth, K.A., Drummond, S.T., Kitchen, N.R. 2000. Measuring and interpreting soil electrical conductivity for precision agriculture. pp. 1444-1451. In Proc. 2nd Int. Conf. Geospatial Information in Agriculture and Forestry. Lake Buena Vista, FL, 10-12 June.

Veris Technologies. 2004. [Online]. [2 p.] Available at [cited 31 July 2004; verified 5 February 2005]. Veris Technologies, Salina, KS.

Wiens, J.A. 1989. Spatial scaling in ecology. Func. Ecol. 3, 385-397.

Four-Year Summary of the Use of Soil Conductivity as a Measure of Soil and Crop Status

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