Examination of a Cultivation Method of Sweet Corn by Use of Compost of Quality and Small Quantity of Slow-Acting Liquid Fertilizer into a Root Zone

[Synopsis] The possibility of cultivation of sweet corn by use of compost, which is largely produced in Hokkaido, with a small quantity of liquid fertilizer into a root zone was examined. In the height of the sweet corn and SPAD, which were examined as a process of growth, no significant difference was recognized, and the growth was almost similar between the experimental plot of compost with liquid fertilizer and that of chemical fertilizer. As a result of the yield examination, in which length of leaves, weight of dried corn stalks, diameter of ears, actual weight of ears, and sugar content (Brix scale) were measured, no significant difference was recognized in any plots. Thus, it is suggested that cultivation of sweet corn with compost of quality produced in Hokkaido and a small quantity of liquid fertilizer could be possible. In future, it would be necessary to examine further the relationships among quality ofcompost, consumption of liquid fertilizer, and growth of sweet corn