Submitted by: John Heard, Manitoba Agriculture, Soil Fertility Specialist
With a lack of seedbed moisture, there are justified concerns about seedplaced fertilizer injury to canola and other crops. How safe is sidebanded nitrogen? Research studies by Dr. Cindy Grant documented considerable canola stand thinning when high rates of sidebanded urea or UAN solution were applied. Agrotain (AT) served to reduce stand injury, but is no longer supported for this use by the manufacturer.
- Stands were thinned at even modest N rates, on a clay loam soil. At high rates stands were reduced to 50%
- Crop growth compensated for reduced stands and generally produced as good a yield as the Agrotain protected stands, except at the highest rate.