THE INFLUENCE OF SEEDING DATE AND SEEDING RATE ON SEED YIELD AND GROWTH CHARACTERS OF FIVE GENOTYPES OF Brassica napus

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Abstract
The effects of seeding date and seeding rate on the agronomic characteristics of five genotypes of Brassica napus L. were studied for 2 yr at two locations in western Canada. Seeding date had a highly significant effect on seed yield, days to first flower, last flower, and maturity of first pod, and no significant effect on flowering period and seed formation period. Generally, the latest seeding date, at all seeding rates and for all genotypes, resulted in the lowest seed yield and the fewest days to first flower, last flower, and maturity of first pod. Seeding rate has a significant effect on days to last flower, maturity of first pod, and seed formation period, but no significant effect on seed sield, first flower and flowering period. Generally, the highest seeding rate at all seeding dates and for all genotypes resulted in the fewest days to last flower and maturity of first pod, and shortest seed formation period.

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