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Soil-test dynamics throughout a five-year ‘Thompson Farm’ rotation in Iowa

Published online by Cambridge University Press:  30 October 2009

Douglas L. Karlen ,
Keith A. Kohler ,
David A. Laird ,
Richard L. Thompson  and
Douglas D. Buhler
Douglas L. Karlen*
Affiliation:
USDA-ARS National Soil Tilth Laboratory, 2150 Pammel Drive, Ames, IA 50011–4420
Keith A. Kohler
Affiliation:
USDA-ARS National Soil Tilth Laboratory, 2150 Pammel Drive, Ames, IA 50011–4420
David A. Laird
Affiliation:
USDA-ARS National Soil Tilth Laboratory, 2150 Pammel Drive, Ames, IA 50011–4420
Richard L. Thompson
Affiliation:
Thompson On-Farm Research, Boone, IA 50036
Douglas D. Buhler
Affiliation:
Crop and Soil Sciences Department, Michigan State University, East Lansing, MI, 48824–1325.
*
D.L. Karlen ([email protected]).
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Abstract

Soil-testing is an effective guide for achieving and maintaining an optimum supply of available plant nutrients, but there is little information on the multi-year soil-test changes for farms using long-term crop rotations, ridge-tillage and nutrients supplied by a mixture of organic amendments. Our objectives were to characterize yearly changes in surface soil-test parameters, including the stratification of P and K; compare soil-test methods (Mehlich III versus Bray P1 and 1 M NH4OAc exchangeable K); and evaluate soil-test interpretation strategies [sufficiency level versus basic cation saturation ratio (BCSR)] within a fanner-managed field. The study was conducted on the Clarion–Nicollet–Webster Soil Association near Boone, 1A, in a field that had not been moldboard plowed for 29 years. Soil samples were collected from the 0–5, 5–10, 10–15, and 15–20 cm depth increments before plowing and every autumn thereafter throughout the 5-year rotation. Samples were analyzed for pH, Bray extractable P, exchangeable K, total C and N, NH4− and NO3−N concentrations, and Mehlich III extractable P, K, Ca, Mg, Na, Mn and Zn. Stratification of P and K was evident within 2 years after moldboard plowing. This was not considered a production problem, because, based on sufficiency-level soil-test interpretations, the animal manure/municipal sludge applications had increased soil P and K concentrations to levels where no crop response to additional fertilizer would be expected. Using Mehlich III extradant with simultaneous inductively coupled plasma–atomic emission spectrometer (ICP–AES) analysis resulted in soil-test interpretations that were the same as with Bray P1 and 1 M ammonium acetate (NH4OAc) extracting solutions. The Mehlich III solution did extract more Ca than 1 M NH4OAc, causing K saturation percentages to be very low when the data were interpreted using a BCSR approach. We conclude that stratification is not a production issue at this site; that either soil-test methodology would be acceptable for P and K extraction; and that additional studies evaluating the BCSR soil-test interpretation philosophy are warranted.

Keywords

ridge-tillagebasic cation saturation ratioorganic amendmentsnutrient stratification
Type
Research Article
Information
American Journal of Alternative Agriculture , Volume 17 , Issue 1 , March 2002 , pp. 9 - 17
Copyright
Copyright © Cambridge University Press 2002

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References

1.Allan, D., Rehm, G., Johnson, J., and Hicks, D.. 1992. Soil and fertilizer effects on root distribution in corn. In Reetz, H. (ed.). Proc. Roots Plant Nutrition Conf. Champaign, II., Potash and Phosphate Institute, Saskatoon, Saskatchewan, Canada, p. 88–97.Google Scholar
2.Allan, D.L., Rehm, G.W., and Oldham, J.L.. 1999. Root system interactions with potassium management in corn. In Oosterhaus, D.M. and Berkowitz, G.A. (eds.). Frontiers in Potassium Nutrition. Potash & Phosphate Institute/Potash and Phosphate Institute of Canada, Norcross, GA. p. 111–116.Google Scholar
3.Bear, F.E., and Prince, A.L.. 1945. Cation equivalent constancy in alfalfa. J. Am. Soc. Agron. 37:217–222.CrossRefGoogle Scholar
4.Buhler, D.D., Kohler, K.A., and Thompson, R.L.. 2001. Weed seed bank dynamics during a five-year crop rotation. Weed Technol. 15:170–176.Google Scholar
5.Cambardella, C.A., and Karlen, D.L.. 1999. Spatial analysis of soil fertility parameters. Precision Agric. 1:5–14.CrossRefGoogle Scholar
6.Eckert, D.J. 1987. Soil test interpretations: Basic cation saturation ratios and sufficiency levels. In Brown, J.R. (ed.). Soil Testing: Sampling, Correlation, Calibration, and Interpretation. SSSA Spec. Pubi. No. 21. Soil Science Society of America, Madison, WI. p. 53–64.Google Scholar
7.Frank, K., Beegle, D., and Denning, J.. 1998. Phosphorus. In Brown, J.R. (ed.). Recommended Chemical Soil Test Procedures for the North Central Region. NCR publ. No. 221 (Revised). Missouri Agricultural Experimental Station, Columbia, p. 21–29.Google Scholar
8.Graham, E.R. 1959. An explanation of theory and methods of soil testing. Missouri Agrie. Exp. Stn Bull. 734. University of Missouri. Columbia.Google Scholar
9.Hanlon, E.A., and Johnson, G.V.. 1984. Bray/Kurtz, Mehlich III, AB/D and ammonium acetate extractions of P, K and Mg in four Oklahoma soils. Commun. Soil Sci. Plant Anal. 15:277–294.CrossRefGoogle Scholar
10.Hendershot, W.H., and Duquette, M.. 1986. A simple barium chloride method for determining cation exchange capacity and exchangeable cations. Soil Sci. Soc. Amer. J. 50:605–608.aCrossRefGoogle Scholar
11.Holanda, F.S.R., Mengel, D.B., Paula, M.B., Carvaho, J.G., and Bertoni, J.C.. 1998. Influence of crop rotations and tillage systems on phosphorus and potassium stratification and root distribution in the soil profile. Commun. Soil Sci. Plant Anal., 29:2383–2394.Google Scholar
12.Hunt, P.G., Karlen, D.L., Matheny, T.A., and Quisenberry, V.L.. 1996. Changes in carbon content of a Norfolk loamy sand after 14 years of conservation or conventional tillage. J. Soil Water Conserv. 51:255–258.Google Scholar
13.Karlen, D.L., and Colvin, T.S.. 1992. Alternative farming system effects on profile nitrogen concentration on two Iowa farms. Soil Sci. Soc. Amer. J. 56:1249–1256.CrossRefGoogle Scholar
14.Karlen, D.L., Duffy, M.D., and Colvin, T.S.. 1995. Nutrient, labor, energy, and economic evaluations of two farming systems in Iowa. J. Prod. Agric. 8:540–546.CrossRefGoogle Scholar
15.Kelling, K.A., Schulte, E.E., and Peters, J.B.. 1996. One hundred years of Ca:Mg ratio research. In New Horizons in Soil Science No. 8. University of Wisconsin-Madison, Dept. of Soil Science, p. 1–10.Google Scholar
16.Mallarino, A.P. 1997. Interpretation of soil phosphorus tests for corn in soils with varying pH and calcium carbonate content. J. Prod. Agric. 10:163–167.CrossRefGoogle Scholar
17.Mehlich, A. 1984. Mehlich 3 soil test extradant: A modification of Mehlich 2 extradant. Commun. Soil Sci. Plant Anal. 15:1409–1416.Google Scholar
18.Olson, R.A., Voss, R.D., Ward, R.C., and Whitney, D.A.. 1985. The philosophy of soil testing. In National Corn Handbook, Crop Fertilization, NCH-2. Iowa State University Cooperative Extension Service, Ames.Google Scholar
19.Rehm, G. 1994. Soil cation ratios for crop production. North Central Reg. Ext. Pub. No. 533. Iowa State University Cooperative Extension Service, Ames.Google Scholar
20.Rehm, G.W., and Fixen, P.E.. 1990. Potassium deficiency in corn – a common ridge-till problem. Better Crops Plant Food 73:6–8.Google Scholar
21.Robbins, S.G., and Voss, R.D.. 1991. Phosphorus and potassium stratification in conservation tillage systems. J. Soil Water Conserv. 46:298–300.Google Scholar
22.SAS Institute. 1999. Statistical Analysis Software. Version 8. SAS Institute, Cary, NC.Google Scholar
23.Thompson, D., Thompson, S., and Thompson, R.. 2000. Alternatives in Agriculture: Thompson On-Farm Research and Wallace Institute 2000 Report, Thompson On-Farm Research, Boone, IA.Google Scholar
24.Voss, R.D., Sawyer, J.E., Mallarino, A.P., and Killorn, R.. 1999. General Guide for Crop Nutrient Recommendations in Iowa. Pm-1688. Iowa State University Cooperative Extension Service, Ames. http://www.extension.iastate.edu/Publications/PM1688.pdf (viewed 05, 2001).Google Scholar
25.Warncke, D. and Brown, J.R.. 1998. Potassium and other basic cations. In Brown, J.R. (ed.). Recommended Chemical Soil Test Procedures for the North Central Region. NCR Pub. No. 221 (Revised). Missouri Agricultural Experimental Station, Columbia, p. 31–33.Google Scholar