Fall-seeded canola in southwest Saskatchewan: interactions between seeding dates and seed coating
2002
Gan, Y. | Selles, F. | Angadi, S. | McDonald, C.L. | Poppy, L.B.
Non-Peer Reviewed
Afficher plus [+] Moins [-]Seeding canola in the fall allows the crop to use soil moisture in the spring more efficiently than when the crop is planted in the spring. In southwestern Saskatchewan, fall-seeded canola usually flowers one to three weeks earlier than spring-seeded canola, enabling the crop to avoid midsummer heat stress that normally occurs during the flowering period of spring seeded canola. However, fall-seeded canola normally germinates early in the spring when the soil is cold, which may result in poor emergence and thin crop stands that often limit seed yield. The success of fall-seeded canola depends on seeding the crop at an optimum date in the fall or using seeds coated with a substance that inhibits germination until it is degraded early in the following spring. The objectives of this study were to i) determine the optimum date for fall seeding of canola in the dry Brown soil zone of the Canadian prairies, ii) investigate the influence of seeding dates and seed coating on plant establishment, maturity, and seed yields of fall-seeded canola, and iii) examine the overall response of fall-seeded canola to the growing conditions of southwestern Saskatchewan.
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