Development of an energy saving and low cost production technique of flowers and ornamental plants by the use of simple cooling facilities, 2: The technique of shipping Eustoma grandiflorum within the year, making use of simplified cooling facilities

1) In the case of cultivation type where Eustoma grandiflorum is shipped from Oct. to Dec., it can be flowered and picked without rosette by seeding its early maturing varieties in simplified cooling facilities,using spring water, from early June to early July and raising seedling for 6-8 weeks. 2) Any exceptionally excellent variety was not found among 28 varieties grown on trial this time, but it was found that "Azuma no yosooi" was a variety, easy to grow, with stable quality in every picking season. 3) As for nursery soil in the case where raising seedling is carried out in a cell molded tray, nursery soil with light apparent specific gravity, mainly composed of peatmoss and mixed with carbonized materials, is suitable. In this case; as to fertilizer, it is better to apply fine grained coated fertilizer of fertilizer response control type (40 days type), containing nearly equal quantities of nitrogen, phosphoric acid and potassium, in the ratio of about 300 mg of its nitrogen content to one liter of nursery soil. 4) From seedlings raised for 6-7 weeks, using a cell tray with 406 holes 35 mm in depth, we could obtain cut flowers with quality equal to that of cut flowers got from seedlings raised for 8 weeks, using a cell tray with 288 holes 45 mm in depth. Accordingly, area utilization coefficient of raising seedling facilities could be improved by 40%