White clover and Alsike clover

White clover and Alsike clover The average yield for these three varieties was 5.66 t/ha for Litago and 5.32 for Alpha and Norstar. The same pattern was found for these varieties as for red clover; there was no significant difference between varieties in yield. Site, year and interaction between these factors accounted for most of the variation in the data set, especially site (R2 = 0.94, CV = 10.8, Root MSE =0.586, Mean=5.4 t/ha). After three years the cover of these varieties varied a lot between locations and varieties. Alpo had disappeared in Qassiarsuk, Upernaviarsuk and Holt. The white clover varieties had disappeared in Holt. In Kollafjørður Alpo had 5% cover, Litago 37% and Norstar 60%. In Fureneset all varieties had around 30% cover. In Lännes all varieties had around 80% cover. At Möðruvellir the cover was 5-10%. At Korpa Alpo had 45% cover, Litago 40% and Norstar 78%. During the fourth winter in Iceland all varieties died at Möðruvellir because of ice cover and at Korpa Alpo had 9% cover, Litago 37% and Norstar 13%. The cover of Norstar decreased considerably between 2012 and 2013. In the spring of 2014 the cover was estimated again and then Norstar had 20% cover, Litago 10% and Alpo 6%.

Fig. 14. Litago white clover at Fureneset (LØ).