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Research ArticleResearch

Economic analysis of cover crops in summer fallow-crop systems

E.G. Smith, L. Heigh, K.K. Klein, J.R. Moyer and R.E. Blackshaw
Journal of Soil and Water Conservation October 2001, 56 (4) 315-321;
E.G. Smith
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L. Heigh
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K.K. Klein
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J.R. Moyer
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R.E. Blackshaw
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ABSTRACT:

Cover crops grown on summer fallow in semiarid environments can be used to provide soil erosion protection and enhance soil nutrients. The economic benefits and costs of fallow cover crop systems were evaluated using fall and spring rye (Secale cereale L.) cover crops with minimum and zero tillage, and using sweet clover (Melilotus officinalis (L.) Lam.) established in companion crops of field peas (Pisum sativum L.), mustard (Brassica juncea (L.) Coss.), or flax (Linum usitatissimum L.) and terminated in the fallow year by four methods. Spring wheat (Triticum aestivum L.) followed the fallow or partial fallow year. The fall rye-minimum tillage system had average returns similar to the no cover-zero tillage, and lower but not significantly different returns from the no cover-minimum tillage system. The lower companion crop yields in which sweet clover was underseeded, reduced the economic benefit of the sweet clover cover crop. Mustard was the most profitable companion crop. Harvesting the sweet clover as hay increased net returns over soil incorporation. For the sweet clover system to be competitive with conventional fallow, reducing the negative effect of sweet clover on companion crop yield is required.

Footnotes

  • Elwin G. Smith, Jim R. Moyer, and Robert E. Blackshaw are scientists at the Agriculture and Agri-Food Canada, Lethbridge Research Centre, Leth-bridge, AB, Lori Heigh is a graduate research assistant at the University of Guelph, Cuelph, Ontario, and Kurt K. Mein is a professor at the University of Lethbridge, Lethbridge, AB.

  • Copyright 2001 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 56 (4)
Journal of Soil and Water Conservation
Vol. 56, Issue 4
Fourth Quarter 2001
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Economic analysis of cover crops in summer fallow-crop systems
E.G. Smith, L. Heigh, K.K. Klein, J.R. Moyer, R.E. Blackshaw
Journal of Soil and Water Conservation Oct 2001, 56 (4) 315-321;

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Economic analysis of cover crops in summer fallow-crop systems
E.G. Smith, L. Heigh, K.K. Klein, J.R. Moyer, R.E. Blackshaw
Journal of Soil and Water Conservation Oct 2001, 56 (4) 315-321;
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