PLANT QUALITY IMPROVER AND PROCESS FOR PRODUCING THE SAME

摘要

A sparingly water-soluble plant quality improver characterized by comprising a polyvalent metal, an organic carboxylic acid, an alkali metal and/or ammonia, and phosphate ions and/or carbonate ions. The sparingly water-soluble plant quality improver inhibits or alleviates physiological disorders of plants and further has the function of improving qualities of the plants, such as sugar content and acidity. It is also characterized in that it causes little fruit surface soiling to heighten the merchandise value, and that it is lowly phytotoxic and highly safe.