Breton plots, Alberta

The Breton Plots near Breton, Alberta were established in 1929 by the Soils Department of the University of Alberta to find a farming system that was adapted to the region.

Soil Sci. Soc. Am. J. 65:431-441 (2001) reports that some plots in a wheat-oat-barley-hay-hay rotation, with additions of manure, gained 17 tons organic C per ha in the sampled plow layer (15 cm), based on analysis of archived samples from 1938 and resampling in 1990, or .33 T C per ha per yr.