Digging into Research
In addition to genetic, physiological, and environmental factors, farming practices such as harvest timing, and tillage regimes can influence secondary dormancy of volunteer canola seed. Given the documented high heritability of secondary dormancy, it is feasible to reduce secondary dormancy in canola cultivars through plant...
Fall harrowing shortly after harvest increased volunteer canola seedling emergence in the fall, resulting in over-winter kill and reduced volunteer canola persistence. Volunteer canola is an on-going problem for farmers on the Prairies. This is partially because of significant harvest seed losses during combining, and also...
Growing soybean on high soil mineral nitrogen (N) fields, or when N fertilizer was applied in increasing rates, resulted in an increase in volunteer canola competition and a corresponding linear decrease in soybean yield. Research was conducted in Manitoba looking at the resource-ratio (R*) hypothesis. This...
Action and economic thresholds for volunteer Roundup Ready canola in Roundup Ready soybean were determined. Economic thresholds of less than 0.5 plants/ft2 (<5 plants/m2) highlight the highly competitive nature of volunteer canola in soybean crops. Volunteer glyphosate-resistant (GR) canola is a challenge for Roundup Ready soybean...
