SWEEP (Soil and Water Environmental Enhancement program)
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The Soil and Water Environmental Enhancement Program, or SWEEP, was a Canadian agricultural program administered by Agriculture and Agri-Food Canada, and carried out by the province of Ontario. Designed to examine the effects of tillage on many types of soil, the program ran from 1986 through 1988.
URL: http://gis.lrs.uoguelph.ca/AgriEnvArchives/sweep/sweephom.html
See related Ontario Ag-Environmental Archive: http://gis.lrs.uoguelph.ca/AgriEnvArchives/