Method and apparatus for water and air culture of plants

Claim 1

An improvement in an apparatus for water and air culture comprising: a culture bed packed with a support for a plant and positioned at an upper level of a plantation vessel; a plantation vessel accommodating the culture bed to be supplied with a culture solution so that the solution may pass through a lower space of the culture bed; means for supplying the culture solution from a tank to the plantation vessel at one end thereof for a period of time controlled by control means including a timer, said supplying means including means for incorporating air into the culture solution while the solution is being supplied; a drain tube having means for regulating the highest and lowest liquid levels by an adjustable slot of the tube provided at the other end of the plantation vessel; and a tank for containing the culture solution of a temperature suitable for causing a plant to grow and for receiving the culture solution flowing out from the drain tube, the means for supplying the culture solution being provided with a nozzle having air intakes and slitter means, and positioned above the one end of the vessel.