Performance of introduced alfalfa cultivars in Longdong Region, Gansu
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Abstract
The local alfalfa ‘Longdong’ was used as control, the comparative study of 14 introduced alfalfa cultivars were carried out in Eastern Gansu Province during 2010-2014. The results showed that introduced alfalfa cultivars had high seed value, the growth stage of introduced alfalfa cultivars was not significantly different in the spring sowing year. The tested cultivars could overwinter safely and perform the best in the third years. The grass yield of introduced alfalfa cultivars achived the highest in the third year and it decreased greatly from the fourth year. The Ladak+ and Defi had the highest production with the average hay grass yield of 11.2 t·ha-1 and 11.0 t·ha-1, increased by 9.8% and 7.8% than the local alfalfa ‘Longdong’, respectively. The stem to leaf ratio of Ladak+ and Defi was small, its grass quality was good. Among these studied cultivars, the Ladak+ and Defi had optimal performance and were suitable for promoting in Longdong Region as the preferred cultivars.
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