|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||47/63 ; 47/59|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 16 인용 특허 : 15|
A hydroponic system for growing sweet potatoes and other root and tuber crops includes a growing channel incorporating a movable root contact/pressure plate assembly. The assembly consists of a flat, rigid PVC plate in which holes for inserting plants are drilled and a flexible vinyl film which is secured along the length of each side edge of the plate, by means of pressure fit connectors. The assembly is secured to the top edges of a growing channel, again by pressure fit connectors. The flexible film suspends the plate near and parallel to the bottom o...
A hydroponic system for growing root crops in the absence of an aggregate, and for stimulating the growth of storage roots by the application of continuous downward pressure to such roots, comprising: a growing channel having a bottom wall and side and end walls, and having an open top; movable root contact/pressure plate means within said growing channel and spaced above the bottom wall thereof to define a root zone, said contact/pressure plate means having a weight selected to provide a growth-stimulating pressure on storage roots within said root zone...