Angers, D. 1992. Changes in soil aggregation and organic carbon under corn and alfalfa. Soil Science Society of America Journal 56:1244–1249.
Baldock, J.O., Hedtcke, J.L., Posner, J.L., and Hall, J.A. 2014. Organic and conventional production systems in the Wisconsin integrated cropping systems trial: III. Yield Trends. Agronomy Journal 106.4:1509–1522.
Balesdent, J., Chenu, C., and Balabane, M. 2000. Relationship of soil organic matter dynamics to physical protection and tillage. Soil and Tillage Research 53:215–230.
Bates, D., Maechler, M., Bolker, B., and Walker, S. 2015. Fitting linear mixed-effects models using lme4. Journal of Statistical Software 67:1–48.
Bell, L.W., Sparling, B., Tenuta, M., and Entz, M.H. 2012. Soil profile carbon and nutrient stocks under long-term conventional and organic crop and alfalfa-crop rotations and re-established grassland. Agriculture, Ecosystems & Environment 158:156–163.
Bolger, T., Angus, J., and Peoples, M. 2003. Comparison of nitrogen mineralisation patterns from root residues of Trifolium subterraneum and Medicago sativa. Biology and Fertility of Soils 38:296–300.
Bowren, K.E., Cooke, D.A., and Downey, R.K. 1969. Yield of dry matter and nitrogen from tops and roots of sweetclover, alfalfa, and red clover at five stages of growth. Canadian Journal of Plant Science 49:61–68.
Bradbury, S.M., Peterson, R.L., and Bowley, S.R. 1991. Interactions between three alfalfa nodulation genotypes and two Glomus species. New Phytologist 119:115–120.
Bruulsema, T. and Christie, B. 1987. Nitrogen contribution to succeeding corn from alfalfa and red clover. Agronomy Journal 79:96–100.
Coulter, J.A., Sheaffer, C.C., Wyse, D.L., Haar, M.J., Porter, P.M., Quiring, S.R., and Klossner, L.D. 2011. Agronomic performance of cropping systems with contrasting crop rotations and external inputs. Agronomy Journal 103:182–192.
Dinnes, D., Karlen, D., and Jaynes, D. 2002. Nitrogen management strategies to reduce nitrate leaching in tile-drained Midwestern soils. Agronomy Journal 94:153–171.
Drinkwater, L.E., Cambardella, C.A., Reeder, J.D., and Rice, C.W. 1996. Potentially mineralizable nitrogen as an indicator of biologically active soil nitrogen. In Doran, J.W. and Jones, A.J. (eds.). Methods for Assessing Soil Quality. SSSA Spec. Publ. 49. SSSA, Madison, WI, p. 217–229.
Gregorich, E.G., Drury, C.F., and Baldock, J.A. 2001. Changes in soil carbon under long-term maize in monoculture and legume-based rotation. Canadian Journal of Soil Science 81:21–31.
Groya, F.L. and Sheaffer, C.C. 1985. Nitrogen from forage legumes: harvest and tillage effects. Agronomy Journal 77:105–109.
Harris, G.H. and Hesterman, O.B. 1990. Quantifying the nitrogen contribution from Alfalfa to soil and two succeeding crops using nitrogen-15. Agronomy Journal 82:129–134.
Heichel, G.H., Barnes, D.K., Vance, C.P., and Henjum, K.I. 1984. Dinitrogen fixation, and N and dry matter partitioning during a 4-year alfalfa stand. Crop Science 24:811–815.
Hesterman, O.B., Sheaffer, C.C., Barnes, D.K., Lueschen, W.E., and Ford, J.H. 1986. Alfalfa dry matter and nitrogen production, and fertilizer nitrogen response in legume–corn rotations. Agronomy Journal 78:19–23.
Horwitz, W. (ed). 1980. Official Methods of Analysis of the Association of Official Analytical Chemists. 13th ed. Association of Official Analytical Chemists, Washington, DC.
Iyamuremye, F., Dick, R., and Baham, J. 1996. Organic amendments and phosphorus dynamics: II. Distribution of soil phosphorus fractions. Soil Science 161:436–443.
Kuznetsova, A., Bruun, P.B.C., and Bojesen, R.H. 2014. lmerTest: Tests in Linear Mixed Effects Models. R package version 2.0-33.
Laboski, C.A.M., Peters, J.R., and Bundy, L.G. 2006. Nutrient application guidelines for field, vegetable, and fruit crops in Wisconsin. Wisconsin Cooperative Extension Service. Available at Web site http://www.learningstore.uwex.edu/assets/pdfs/A2809.pdf (verified 16 January 2017).
Lawrence, J.R., Ketterings, Q.M., and Cherney, J.H. 2008. Effect of nitrogen application on yield and quality of silage corn after forage legume-grass. Agronomy Journal 100:73–79.
Li, G.C., Mahler, R.L., and Everson, D.O. 1990. Effects of plant residues and environmental factors on phosphorus availability in soils. Communications in Soil Science and Plant Analysis 21:471–491.
Moncada, K.M. and Sheaffer, C.C. 2010. Chapter 13: winter cover crops. In Moncada, K.M. and Sheaffer, C.C. (eds.). Risk Management Guide for Organic Producers. University of Minnesota, St. Paul, MN. pp. 13-1–13-22.
Moore, J.M., Klose, S., and Tabatabai, M.A. 2000. Soil microbial biomass carbon and nitrogen as affected by cropping systems. Biology and Fertility of Soils 31:200–210.
Ominski, P.D., Entz, M.H., and Kenkel, N. 1999. Weed suppression by medicago sativa in subsequent cereal crops: A comparative survey. Weed Science 47:282–290.
Pascault, N., Ranjard, L., Kaisermann, A., Bachar, D., Christen, R., Terrat, S., Mathieu, O., Leveque, J., Mougel, C., Henault, C., Lemanceau, P., Pean, M., Boiry, S., Fontaine, S., and Maron, P.-A. 2013. Stimulation of different functional groups of bacteria by various plant residues as a driver of soil priming effect. Ecosystems 16:810–822.
R Core Team 2015. R: A Language and Environment for Statistical Computing. R Foundation for statistical computing, Vienna, Austria. http://www.R-project.org/
Rehm, G. and Schmitt, M.A. 1989. Fertilizing Alfalfa in Minnesota. University of Minnesota Extension Service AG-FO-3814. University of Minnesota, St. Paul, MN.
Rehm, G., Randall, G., Lamb, J., and Eliason, R. 2006. Fertilizing Corn in Minnesota. University of Minnesota Extension FO-3790-C. University of Minnesota, St. Paul, MN.
Richardson, A.E., Barea, J.M., McNeill, A.M., and Prigent-Combaret, C. 2009. Acquisition of phosphorus and nitrogen in the rhizosphere and plant growth promotion by microorganisms. Plant and Soil 321:305–339.
Schreiber, M.M. 1967. Effect of density and control of Canada thistle on production and utilization of alfalfa pasture. Weeds 15:138–142.
Sheaffer, C.C. and Seguin, P. 2003. Forage legumes for sustainable cropping systems. Journal of Crop Production 8:187–216.
Sheaffer, C.C., Barnes, D.K., Heichel, G.H., Marten, G.C., and Lueschen, W.E. 1988. Seeding year nitrogen and dry matter yields of nondormant and moderately dormant alfalfa. Journal of Production Agriculture 1:261–265.
Sheaffer, C.C., Barnes, D.K., and Heichel, G.H. 1989. ‘Annual’ Alfalfa in Crop Rotations. Minnesota Agricultural Experiment Station. Available at Web site http://hdl.handle.net/11299/139539 (verified 16 January 2017).
Six, J., Elliott, E., and Paustian, K. 2000. Soil macroaggregate turnover and microaggregate formation: A mechanism for C sequestration under no-tillage agriculture. Soil Biology and Biochemistry 32:2099–2103.
Snapp, S.S., Swinton, S.M., Labarta, R., Mutch, D., Black, J.R., Leep, R., Nyiraneza, J., and O-Neil, K. 2005. Evaluating cover crops for benefits, costs, and performance within cropping system niches. Agronomy Journal 97:322–332.
Tomm, G., Walley, F., and van Kessel, C. 1995. Nitrogen cycling in an alfalfa and bromegrass sward via litterfall and harvest losses. Agronomy Journal 87:1078–1085.
Undersander, D., Cosgrove, D., Cullen, E., Grau, C., Rice, M.E., Renz, M., Sheaffer, C., Shewmaker, G., and Sulc, M. 2011. Alfalfa Management Guide. American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Madison, WI.
Yost, M., Coulter, J.C., and Russelle, M.P. 2013. First-year corn after alfalfa showed no response to fertilizer nitrogen under no-tillage. Agronomy Journal 105:208–214.
Yost, M., Russelle, M.P., and Coulter, J.C. 2014. Field-specific fertilizer nitrogen requirements for first-year corn following alfalfa. Agronomy Journal 106:645–658.
Yost, M.A., Coulter, J.C., Russelle, M.P., Sheaffer, C.C., and Kaiser, D.E. 2012. Alfalfa nitrogen credit to first-year corn: potassium, regrowth, and tillage timing effects. Agronomy Journal 104:953–962.
Yost, M.A., Russelle, M.P., Coulter, J.A., Schmitt, M.A., Sheaffer, C.C., and Randall, G.W. 2015. Stand age affects fertilizer nitrogen response in first-year corn following alfalfa. Agronomy Journal 107:486–494.