7.3.16: Sources

Allen, E.R., G.V. Johnson and L.G. Unruh. 1994. Current approaches to soil testing methods: Problems and solutions. In Soil Testing: Prospects for Improving Nutrient Recommendations, ed. J.L. Havlin et al., pp. 203–220. Soil Science Society of America: Madison, WI.

Cornell Cooperative Extension. 2000. Cornell Recommendations for Integrated Field Crop Production. Cornell Cooperative Extension: Ithaca, NY.

Hanlon, E., ed. 1998. Procedures Used by State Soil Testing Laboratories in the Southern Region of the United States. Southern Cooperative Series Bulletin No. 190, Revision B. University of Florida: Immokalee, FL.

Herget, G.W. and E.J. Penas. 1993. New Nitrogen Recommendations for Corn. NebFacts NF 93–111. University of Nebraska Extension: Lincoln, NE.

Jokela, B., F. Magdoff, R. Bartlett, S. Bosworth and D. Ross. 1998. Nutrient Recommendations for Field Crops in Vermont. Brochure 1390. University of Vermont Extension: Burlington, VT.

Kopittke, P.M. and N.W. Menzies. 2007. A review of the use of the basic cation saturation ratio and the “ideal” soil. Soil Science Society of America Journal 71: 259–265.

Laboski, C.A.M., J.E. Sawyer, D.T. Walters, L.G. Bundy, R.G. Hoeft, G.W. Randall and T.W. Andraski. 2008. Evaluation of the Illinois Soil Nitrogen Test in the north central region of the United States. Agronomy Journal 100: 1070–1076.

McLean, E.O., R.C. Hartwig, D.J. Eckert and G.B. Triplett. 1983. Basic cation saturation ratios as a basis for fertilizing and liming agronomic crops. II. Field studies. Agronomy Journal 75: 635–639.

Penas, E.J. and R.A. Wiese. 1987. Fertilizer Suggestions for Soybeans. NebGuide G87-859-A. University of Nebraska Cooperative Extension: Lincoln, NE.

The Penn State Agronomy Guide. 2019–2020. Pennsylvania State University: University Station, PA.

Recommended Chemical Soil Test Procedures for the North Central Region. 1998. North Central Regional Research Publication No. 221 (revised). Missouri Agricultural Experiment Station SB1001: Columbia, MO.

Rehm, G. 1994. Soil Cation Ratios for Crop Production. North Central Regional Extension Publication 533. University of Minnesota Extension: St. Paul, MN.

Rehm, G., M. Schmitt and R. Munter. 1994. Fertilizer Recommendations for Agronomic Crops in Minnesota. BU-6240-E. University of Minnesota Extension: St. Paul, MN.

SARE. 2017. How to Conduct Research on Your Farm or Ranch. Available at www.sare.org/research.

Sela. S. and H.M. van Es. 2018. Dynamic tools unify fragmented 4Rs into an integrative nitrogen management approach. J Soil & Water Conserv. 73:107A–112A.

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