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Grain Legumes in Northern Great Plains

Impacts on Selected Biological Soil Processes

^a Agriculture & Agri-Food Canada, Box 29, Beaverlodge, AB, Canada T0H 0C0
^b USDA-ARS, 217 Johnson Hall, Washington State Univ., Pullman, WA 99164-6421

View larger version (7K): [in this window] [in a new window]   Fig. 1. Land area occupied by summer fallow in Canada and United States from 1971 to 2001. Source of data: Statistics Canada (1999) and USDA (2002), with permission.

View larger version (12K): [in this window] [in a new window]   Fig. 2. Land area occupied by grain legume crops in Canada and United States from 1984 to 2004. Source of data: FAO (2005), with permission.