Abstract
Great attention has been devoted to find the optimum conditions for growing vegetables in hydroponic cultures since 1980s with significant advancement of highly controlled plant factory. In recent years, indoor type plant factories come attract attention with the development of low cost LED lamps. In addition, a safe and stable food supply based on the engineering technology is required with increasing crisis awareness for the drastic change of climate, especially in JAPAN. In this study, water remediation technologies utilizing the bobbles and bobble jet are applied in nutrient solution to cultivate root vegetables and potatoes in solid medium culture system. We represent here the effect of bubbles on dissolved oxygen and growth of vegetables.
