In the northern Great Plains of Canada, there has been limited research conducted on reduced-tillage grain production systems managed organically. The objective was to adapt an organic rotational no-till system to the growing conditions of Manitoba, and to test its agronomic performance. A set of four experiments were conducted between 2010 and 2012, in Carman, MB, Canada. Mulches with hairy vetch (Vicia villosa Roth) showed the most promising results, producing the highest mulch biomass and organic no-till spring wheat (Triticum aestivum L.) yield. Organic flax (Linum usitatissimum L.) yield was significantly higher in no-till than in the two tillage treatments. Reduced content of soil nitrate-N and perennial weeds limited crop productivity after 4 yr under organic continuous no-till. In conclusion, the successful adaptation of the organic rotational no-till system to the growing conditions of Manitoba eliminated the need for tillage for a period of 1.5 to 2 yr.

Thesis (Ph. D.)--University of Adelaide, Dept. of Plant Pathology, 1984. / Includes bibliographical references (leaves 133-144).

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 169-171). Also available via the Internet.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992. / Vita. Abstract. Includes bibliographical references (leaves 133-141). Also available via the Internet.

Thesis (M.S. in natural resources)--Washington State University. / Includes bibliographical references.

Thesis (Ph. D.)--University of Oregon, 2002. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 212-220). Also available for download via the World Wide Web; free to University of Oregon users.

Thomas W. Malone, Kevin Crowston. / Includes bibliographical references (p. 37-45). / Research supported by Digital Equipment Corporation. Research supported by the National Science Foundation. IRI-8805798 IRI-8903034 Research supported by the MIT International Financial Services Research Center. Research supported by General Motors/Electronic Data Systems.

Jintae Lee, Thomas W. Malone. / Includes bibliographical references (p. 34-36). / Supported by Digital Equipment Corp., the National Science Foundation, Wang Laboratories, Inc., Xerox Corporation, General Motors and Bankers Trust Company.

Thomas W. Malone, Kevin Crowston. / "Appears in Proceedings of the Conference on Computer Supported Cooperative Work, Los Angeles, California, October, 1990." / Includes bibliographical references.

Erik Brynjolfsson. / Second series information from publisher's list. / Includes bibliographical references (p. 47-52). / Sponsored by the MIT Center for Coordination Science, the MIT International Financial Services Research Center, and the MIT Industrial Performance Center.