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144. Alberta Agriculture. 1984. Canola production survey results.. Field Crops Branch, Lacombe, Alberta, CANADA.
72% of the producers grew canola on stubble, while 28% followed summerfallow. Average yields were higher (2 bu/ac) where canola had not been grown in the past 4 years. Yields were not greatly affected by N rates from 10-120 lb/ac on summerfallow. Yields were slightly lower overall on stubble, and a steady response to N was noted. The top producers on summerfallow applied more of the N in the fall, and more of it was deep banded. Half of the top producers applied 30 lb/ac P2O5, while few applied K. Treflan was the most widely used herbicide. Few insect problems were reported, while many growers reported disease, but not at economic levels. Yields were in the 25-30 bu/ac range.