|
Field experiments were carried out to investigate the effect of planting methods with seed bulbs and planting density on the growth and yield of Allium grayi Regel. Plant growth amount and yield per 10a were the highest in mother bulbs planting which followed by mother bulbs＋bulblets (mixed 1 : 4), bulblets and bulbils planting. In case of mother bulbs, mother bulbs＋bulblets and bulblets planting, growth amount of leaves and stems increased rapidly untill the middle and late October to a peak of growth amount. On the other hand, bulbil planting showed the typical growth after wintering due to the delayed leaf emergence. Between planting methods, drilling which was known to be little competition among plants was effective for greater plant growth amount and yield per l0a than dibbling, and its effect on yield potential was the highest in harvesting after wintering. As the mother bulbs＋bulblets were increased in drilling from 80㎏/l0a to 140㎏/10a, the plant growth amount was decreased but yield potential was increased. In drilling with mother bulbs＋bulblets above 140㎏/10a, plant growth amount as well as yield potential was decreased. The effect of more planting density on yield increase was the highest in harvesting before wintering. Therefore, drilling was a desirable planting method to cultivate Allium grayi Regel, and optimum planting density of mother bulbs＋bulblets was approximately 140㎏/l0a in drilling under open field conditions.
|