Wheat Yields and Soil Fertility on the Canadian Prairies after a Half Century of Farming1
- K. W. Hill2
At three Experimental Stations in Western Canada the yields of spring wheat on summerfallow in grain rotations have been maintained for 40 years without the addition of fertilizer or manure. Yields of wheat following wheat in these rotations at two Stations may have declined slightly but this was not due entirely to reduced fertility since weed infestations have adversely affected yields.
At the Lethbridge Station in Alberta, average losses of 25% nitrogen and 19% organic matter have occurred in the grain rotations since 1910.
It appears that a cropping practice which includes wheat and summerfallow can be continued profitably for some time to come in Western Canada if soil erosion and weeds can be controlled.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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