<p><P>PROBLEM TO BE SOLVED: To provide a fruit or vegetable hydroponic method for growing fruits or vegetables in a potassium-containing culture solution, which gives less influence on quality so as to decrease the rate of potassium content of fruits or vegetables. <P>SOLUTION: This fruit or vegetable hydroponic method for growing fruits or vegetables in a potassium-containing culture solution includes using a standard culture solution containing potassium at standard concentration in a period before a reproductive growth period, and using after a reproductive growth period, a potassium culture solution having a potassium concentration less than the standard concentration without deficiency of potassium in the culture solution so as to decrease the rate of potassium content of fruits or vegetables. <P>COPYRIGHT: (C)2011,JPO&INPIT</p>
