Adaptability of different varieties of Italian ryegrass in the Yangzhou area

The adaptability of twenty varieties of Italian ryegrass introduced Japan were examined in the Ynagzhou area by a pot experiment. The results of this study indicated that the yield of forage of the first cutting time was the highest among all the varieties, and was significantly higher than that of the second cutting time and the third cutting time (P0.05). The yield of each variety was significant different among different cutting times (P0.05). Among twenty varieties, Harukaze and Musashi performed well in yield, stem/leaf, tillers and height, implying that they were better adaptable than other varieties in the Yangzhou area.