Seeding dates effects on seed and forage production of Berseem clover (Trifolium alexandrinum L.) In Mazandaran

Field experiments were conducted to evaluate the effects of different seeding dates of Berseem clover (Trifolium alexandrinum L.) on its seed and forage productions. In this study، five seeding dates in 2 weeks intervals from October 1 to November 30 during 2002 to 2003 were used. The results showed that seeding dates significantly affect on seed and forage production in 2 years of experiment. Seeding on October 1 and October 15 were the best for either seed or forage production. Differences between two years of experiment were significant. Yield production in second year was more than that of first year. Interactions between seeding date and year was not significant. Therefore، it should recommend that planting of berseem clover during October 1 to October 15 is the best date for the Mazandaran environmental conditions.