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Effects of input management and crop diversity on economic returns and riskiness of cropping systems in the semi-arid Canadian Prairie

  • R.P. Zentner (a1), P. Basnyat (a1), S.A. Brandt (a2), A.G. Thomas (a3), D. Ulrich (a2), C.A. Campbell (a4), C.N. Nagy (a5), B. Frick (a6), R. Lemke (a3), S.S. Malhi (a7), O.O. Olfert (a3) and M.R. Fernandez (a1)...


Producers in the semi-arid Dark Brown Chernozemic (Typic Boroll) soil zone of the Canadian Prairie are contemplating changes to land-use practices, moving away from conventional high-input production systems that specialize in one or two annual grain crops to more diversified and extended cropping systems that use reduced-input and organic management practices. This study examined the economic merits of nine cropping systems, consisting of a factorial combination of three input management methods and three levels of cropping diversity. It was conducted over the 1996–2007 period on a loam soil at Scott, Saskatchewan. The input treatments were: (1) high input (HIGH), which used conventional tillage and full recommended rates of fertilizers and pesticides ‘as required’; (2) reduced input (RED), which used conservation tillage and integrated weed and nutrient management practices in an effort to lower requirements for fuel, fertilizers and pesticides; and (3) organic input (ORG), which used tillage, non-chemical pest control, higher seeding rates, delayed seeding and legume crops to replenish soil nutrients. The crop diversity treatments included: (1) a fallow-based rotation with low crop diversity (LOW); (2) a diversified annual rotation of cereal, oilseed and pulse grains (DAG); and (3) a diversified rotation using annual grains and perennial forages (DAP). All crop rotations were 6 years in length. At the 2007 input costs and prices, average net returns and 12-year net present values were higher for organic than for non-organic treatments, with the ORG input/LOW crop diversity system being the most profitable (net returns=$234 ha−1 yr−1 and net present value=$1953 ha−1). Net returns averaged about 10% less for ORG/DAG compared to the most profitable system, and about 22% less for HIGH/DAG and RED/DAG (the best non-organic systems). The DAP treatments that included forage were not economically competitive with the other treatments, often producing economic losses. The relative profitability of the organic treatments was highly dependent on the existence of organic price premiums. When price premiums for organic crops were reduced to less than 70% of the 2007 levels, the organic treatments were less profitable than the comparable non-organic treatments. The organic treatments also experienced significantly lower (and often negative) net returns compared to the non-organic treatments during completion of the 3-year organic certification period. We estimated that it required 5–7 years after completion of certification for the organic treatments to break even with the comparable non-organic treatments. Thereafter the organic treatments produced consistently higher net earnings. Production costs averaged 16% lower with ORG management compared to the HIGH-input treatments, but we found little difference in total costs between the respective HIGH- and RED-input treatments. The organic treatments also displayed lower income variability than the non-organic treatments, with the ORG/LOW system being preferred by risk-averse producers, who do not subscribe to all-risk crop insurance, and with the ORG/LOW and ORG/DAG systems preferred by low and medium risk-averse producers when having the added financial protection from the Canada/Saskatchewan all-risk crop insurance program.


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1Padbury, G., Waltman, S., Caprio, J., Coen, G., McGinn, S., Mortensen, D., Nielsen, G., and Sinclair, R. 2002. Agroecosystems and land resources of the Northern Great Plains. Agronomy Journal 94:251261.
2Pimentel, D., Hepperly, P., Hanson, J., Douds, D., and Seidel, R. 2005. Environmental, energetic and economic comparisons of organic and conventional farming systems. BioScience 55:573582.
3Smolik, J.D., Dobbs, T.L., and Rickerl, D.H. 1995. The relative sustainability of alternative, conventional, and reduced-till farming systems. American Journal of Alternative Agriculture 10:2535.
4Campbell, C.A., Zentner, R.P., Gameda, S., Blomert, B., and Wall, D.D. 2002. Production of annual crops on the Canadian Prairies: trends during 1976–1998. Canadian Journal of Soil Science 82:4557.
5Zentner, R.P., Wall, D.D., Nagy, C.N., Smith, E.G., Young, D.L., Miller, P.R., Campbell, C.A., McConkey, B.G., Brandt, S.A., Lafond, G.P., Johnston, A.M., and Derksen, D.A. 2002. Economics of crop diversification and soil tillage opportunities in the Canadian Prairies. Agronomy Journal 94:216230.
6Entz, M.H., Guilford, R., and Gulden, R. 2001. Crop yield and soil nutrient status on 14 organic farms in the eastern portion of the northern Great Plains. Canadian Journal of Plant Science 81:351354.
7Smith, E.G., Clapperton, M.J., and Blackshaw, R.E. 2004. Profitability and risk of organic production systems in the northern Great Plains. Renewable Agriculture and Food Systems 19:152158.
8MacRae, R.J., Frick, B., and Martin, R. 2007. Economic and social impacts of organic production systems. Canadian Journal of Plant Science 87:10371044.
9Acton, D.F. and Gregorich, L.J. 1995. The Health of Our Soils: Towards Sustainable Agriculture in Canada. Publication No. 1906/E. Centre for Land and Biological Resource Research, Ottawa, ON, Canada.
10Janzen, H.H., Desjardins, R.L., Asselin, J.M.R., and Grace, B. 1999. The health of our air: Towards sustainable agriculture in Canada. Publication 1981/E. Research Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada. p. 98.
11Lafond, G.P., Boyetchko, S.M., Brandt, S.A., Clayton, G.W., and Entz, M.H. 1996. Influence of changing tillage practices on crop production. Canadian Journal of Plant Science 76:641649.
12Campbell, C.A., Tessier, J.S.J., and Selles, F. 1988. Challenges and limitations to adoption of conservation tillage – soil organic matter, fertility, moisture and soil environment. In Land Degradation and Conservation Tillage, Proceedings of the 34th Annual CSSS/AIC Meeting, AIC, Calgary, AB. p. 140185.
13Derksen, D.A., Anderson, R.L., Blackshaw, R.E., and Maxwell, B. 2002. Weed dynamics and management strategies for cropping systems in the northern Great Plains. Agronomy Journal 94:174185.
14Brandt, S.A. 1992. Zero vs. conventional tillage and their effects on crop yield and soil moisture. Canadian Journal of Plant Science 72:679688.
15McConkey, B.G., Campbell, C.A., Zentner, R.P., Dyck, F.B., and Selles, F. 1996. Long-term tillage effects on spring wheat production on three soil textures in the Brown soil zone. Canadian Journal of Plant Science 76:747756.
16Miller, P.R., McDonald, C.L., Derksen, D.A., and Waddington, J. 2001. The adaptation of seven broadleaf crops to the dry semiarid prairie. Canadian Journal of Plant Science 81:2943.
17Campbell, C.A., Zentner, R.P., Janzen, H.H., and Bowren, K.E. 1990. Crop rotation studies on the Canadian Prairies. Publication 1841/E. Research Branch, Agriculture Canada, Ottawa, ON. p. 133.
18Smith, E.G., Peter, T.L., Blackshaw, R.E., Lindwall, C.W., and Larney, F.J. 1996. Economics of reduced tillage fallow–crop systems in the Dark Brown soil zone of Alberta. Canadian Journal of Soil Science 76:411416.
19Zentner, R.P., McConkey, B.G., Campbell, C.A., Dyck, F.B., and Selles, F. 1996. Economics of conservation tillage in the semiarid prairie. Canadian Journal of Plant Science 76:697–70.
20Zentner, R.P., Brandt, S.A., Kirkland, K.J., Campbell, C.A., and Sonntag, G.J. 1992. Economics of rotation and tillage systems for the Dark Brown soil zone of the Canadian Prairies. Soil and Tillage Research 24:271284.
21Zentner, R.P., Lafond, G.P., Derksen, D.A., and Campbell, C.A. 2002. Tillage method and crop diversification: Effect on economic returns and riskiness of cropping systems in a Thin Black Chernozem of the Canadian Prairies. Soil and Tillage Research 67:9–21.
22Government of Canada. 2006. Organic production systems: General principles and management standards. CAN/CGSB-32.310–2006. Available at Web site (accessed January 21, 2011).
23Brandt, S.A., Ulrich, D., Thomas, A.G., and Olfert, O.O. 2003. Alternative cropping systems in the Canadian Prairies: Effects of input level and cropping diversity on crop production. In Proceedings of the Dynamic Cropping Systems: Principles, Processes, and Challenges, Bismarck, ND, August 4–7, 2003. p. 224228.
24Schneeberger, W., Darnhofer, L., and Eder, M. 2002. Barriers to the adoption of organic farming by cash-crop producers in Austria. American Journal of Alternative Agriculture 17:2431.
25Malhi, S.S., Brandt, S.A., Lemke, R., Moulin, A.P., and Zentner, R.P. 2009. Effects of input level and crop diversity on soil nitrate-N, extractable P, aggregation, organic C and N, and nutrient balance in the Canadian Prairie. Nutrient Cycling in Agroecosystems 84:122.
26Brandt, S.A., Thomas, A.G., Olfert, O.O., Leeson, J.Y., Ulrich, D., and Weiss, R. 2010. Design, rationale and methodological considerations for a long term alternative cropping experiment in the Canadian plain region. European Journal of Agronomy 32:7379.
27Zentner, R.P., Basnyat, P., Brandt, S.A., Thomas, A.G., Ulrich, D., Campbell, C.A., Nagy, C.N., Frick, B., Lemke, R., Malhi, S.S., and Fernandez, M.R. 2010. Effects of input management and crop diversity on non-renewable energy use efficiency of cropping systems in the Canadian Prairie. European Journal of Agronomy 34:113123.
28Clayton, J.S. and Ellis, J.G. 1952. Soil Survey of the Experimental Stations and Substations of the Canada Department of Agriculture in Saskatchewan. Saskatchewan Soil Survey. Saskatoon, SK. p. 81.
29Saskatchewan Soil Testing Laboratory. 1990. Nutrient Requirement Guidelines for Field Crops in Saskatchewan. Saskatchewan Soil Testing Laboratory, University of Saskatchewan, Saskatoon, SK. p. 33.
30Zentner, R.P. and Campbell, C.A. 1988. First 18 years of a long-term crop rotation study in southwestern Saskatchewan – yields, grain protein and economic performance. Canadian Journal of Plant Science 68:121.
31Doll, J.P. and Orazem, F. 1978. Production Economics: Theory with Applications. Grid Inc., Columbus, OH. p. 406.
32Saskatchewan Agriculture and Food. 2007. Farm Machinery Custom and Rental Rate Guide 2006–07. Sustainable Production Branch, Saskatchewan Agriculture and Food, Regina, SK. p. 38.
33University of Saskatchewan. 2007. Prairie Crop Protection Planner. Version 2 [CD-ROM] University of Saskatchewan, Saskatoon, SK. Available at Web site (accessed January 21, 2011).
34Saskatchewan Crop Insurance Corporation. 2007. Premium Tables 2007 (Commercial and Organic Crops) – Risk Area 20. Saskatchewan Crop Insurance Corporation, Melville, SK.
35Canadian Wheat Board. 2007. 2006–07 initial payments. [Online] Available at Web site–07_tonnes.pdf (accessed January 21, 2011).
36SAS Institute Inc. 2006. SAS/STAT 9.1 User's Guide. SAS Institute Inc., Cary, NC.
37Littel, R.C., Milliken, G.A., Stroup, W.W., and Wolfinger, R.D. 1996. SAS System for Mixed Models. SAS Institute Inc., Cary, NC. p. 633.
38SAS Institute Inc. 2006. The GLIMMIX Procedure. Available at Web site
39Goh, S., Shih, C.C., Cochan, M.J., and Rakin, R. 1989. A generalized stochastic dominance program for the IBM PC. Southern Journal of Agricultural Economics 21:175182.
40Zentner, R.P., Selles, F., Campbell, C.A., Handford, K., and McConkey, B.G. 1992. Economics of fertilizer-N management for zero-tillage continuous spring wheat in the Brown soil zone. Canadian Journal of Plant Science 72:981995.
41Stonehouse, D.P., Weise, S.F., Sheardown, T., Gill, R.S., and Swanton, C.J. 1996. A case study approach to comparing weed management strategies under alternative farming systems in Ontario. Canadian Journal of Agricultural Economics 44:8199.
42Diebel, P.L., Llewelyn, R.V., and Williams, J.R. 1993. An economic analysis of conventional and alternative cropping systems for northeast Kansas. Report of Progress 687. Agriculture Experiment Station, Kansas State University, Manhattan, KS.
43Delate, K., Chase, C., Duffy, M., and Turnbull, R. 2006. Transitioning into organic grain production: An economic perspective. [Online]. Crop Management doi:
44Archer, D.W., Jaradat, A.A., Johnson, J.M.-F., Weyers, S.L., Gesch, R.W., Forcella, F., and Kludze, H.K. 2007. Crop productivity and economics during the transition to alternative cropping systems. Agronomy Journal 99:15381547.
45Unger, P.W. and McCalla, T.M. 1980. Conservation tillage systems. Advances in Agronomy 33:158.
46Aulakh, M.S., Rennie, D.A., and Paul, E.A. 1982. Gaseous nitrogen losses from cropped and summer-fallowed soils. Canadian Journal of Soil Science 62:187192.
47Campbell, C.A., McConkey, B.G., Zentner, R.P., Selles, F., and Curtin, D. 1996. Long term effects of tillage and crop rotations on soil organic C and total N in a clay soil in southwestern Saskatchewan. Canadian Journal of Soil Science 76:395401.
48Janzen, H.H., Campbell, C.A., Izaurralde, R.C., Ellert, B.H., Juma, N., McGill, W.B., and Zentner, R.P. 1998. Management effects on soil C storage on the Canadian Prairies. Soil and Tillage Research 47:181195.
49Karlen, D.L., Duffy, M.D., and Clovin, T.S. 1995. Nutrient, labor, energy, and economic evaluations of two farming systems in Iowa. Journal of Production Agriculture 8:540546.
50Hanson, J.C., Lichtenberg, E., and Peters, S.E. 1997. Organic versus conventional grain production in the mid-Atlantic: an economic and farming system overview. American Journal of Alternative Agriculture 12:29.
51Mahoney, P.R., Olson, K.D., Porter, P.M., Huggins, D.R., Perillo, C.A., and Crookston, R.K. 2004. Profitability of organic cropping systems in southwestern Minnesota. Renewable Agriculture and Food Systems 19:3546.
52Brandt, S.A. and Zentner, R.P. 1995. Crop production under alternate rotations on a Dark Brown Chernozemic soil at Scott, Saskatchewan. Canadian Journal of Plant Science 75:789794.
53Zentner, R.P., Brandt, S.A., and Campbell, C.A. 1996. Economics of monoculture cereal and mixed oilseed-cereal rotations in west-central Saskatchewan. Canadian Journal of Plant Science 76:393400.
54Smith, E.G., Upadhyay, B.M., Blackshaw, R.E., Beckie, H.J., Harker, K.N., and Clayton, G.W. 2006. Economic benefits of integrated weed management systems for field crops in the Dark Brown and Black soil zones of western Canada. Canadian Journal of Plant Science 86:12731279.
55Batte, M.T., Forster, D.L., and Hitzhusen, F.J. 1993. Organic agriculture in Ohio: An economic perspective. Journal of Production Agriculture 6:536542.
56Welsh, R. 1999. The economics of organic grain and soybean production in the Midwestern United States. Policy Studies Report No. 13. Henry A. Wallace Institute for Alternative Agriculture, Greenbelt, MD.
57Anderson, J.R., Dillion, J.L., and Hardaker, B. 1977. Agricultural Decision Analysis. Iowa State University Press, Ames, IA. p. 344.
58Hanson, J.C., Johnson, D.M., Peters, S.E., and Janke, R.R. 1990. The profitability of sustainable agriculture on a representative grain farm in the mid-Atlantic region, 1981–89. Northeast Journal of Agriculture and Resource Economics 19:9098.


Effects of input management and crop diversity on economic returns and riskiness of cropping systems in the semi-arid Canadian Prairie

  • R.P. Zentner (a1), P. Basnyat (a1), S.A. Brandt (a2), A.G. Thomas (a3), D. Ulrich (a2), C.A. Campbell (a4), C.N. Nagy (a5), B. Frick (a6), R. Lemke (a3), S.S. Malhi (a7), O.O. Olfert (a3) and M.R. Fernandez (a1)...


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