This study was conducted to obtain information on selection of superior local variety and cultural practice development in Allium grayi. Four local varieties were cultivated under keeping warm and investigated some useful characters, planting date and soil adaptation.
1. Leaf length of Jeju, Milyang and Daegu local varieties were about the same, but that of Ulleung local variety was longer than those of the others. The number of leaves of Ulleung, Jeju and Daegu local varieties were not different from one another, but that of Milyang local variety was significantly more than those of the others. The leaf weight of Ulleung and Milyang varieties were about the same.
2. Not only mother bulb weight of Ulleung and Milyang local varieties but also those of Jeju and Daegu local varieties were not different from each other. The former, however, was significantly heavier than the latter. The bulblet weight and number of bulblet of Milyang local variety were significantly higher than those of the others.
3. When planting date were on August 10, 30 and September 19, leaf emergence date of Daegu and Ulleung local varieties were early in October. When planting dates were on October 9 and 29, as planting date was later, leaf emergence date became also later. But, all the time, leaf emergence date of Ulleung local variety was faster than that of Daegu local variety.
4. When planting dates were on August 10, 30 and September 19, yields of Daegu and Ulleung local varieties were not different from each other according to planting date. On and after September 19, as planting date was later, yield became less decreased.
5. As Daegu local variety was cultivated in loamy sand, loam and clay loam, the yield of that was the most in loamy sand but the least in clay loam.
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