Quantifying the economic and soil quality benefits of long-term no-till using a canola-spring wheat rotation
Fran Walley, Guy Lafond
April 2012 - March 2015
Bumper yields are continually being achieved in canola and other crops, but high yields can change the soil environment over time, negatively affecting productivity.
Improve the productivity in soils to meet the challenges of higher grain yields by understanding soil-building and determining if a surplus of nitrogen is required compared to plant removal. Soil and crop management approaches between long term no-till operations and recently converted no-till management will also be analyzed
Long term no-till management has been shown to convert nitrogen into higher crop yields for more than 10 years, minimizing soil disturbances to enable soil-micro flora. Early season plant nitrogen availability was greater in long term no-till systems than short-term, and plant available nitrogen in the early season also increased with past nitrogen application rates.
Long-term use of appropriate nitrogen fertilizer rates along with no-till management has shown to increase soil productivity economically, while reducing impact to the environment.
Keywords:No-till, Rotation, Soil quality, Soil health, Fertility, Nutrients