In recent years, many farmers in the Parkland zone experienced substantial loss in seed yield due to severe S deficiency in the growing season. Canola has high requirements for S which may vary with cultivars (and
canola type) depending on the differences in growth rate, yield potential, rooting system and genetics. The use of high yielding canola cultivars with high rates of N and other fertilizers can increase instances of S deficiency in the growing season due to faster depletion of S in soil. The objective of this study was to compare the relative response of selected canola cultivars to S deficiency and S fertilization in relation to seed yield and quality.