Root control bag

US4574522A · kind A · utility

Inventors

• Ralph E. Reiger · Darmstadt, DE
• Carl E. Whitcomb · Stillwater, US

Key dates

• Filing date: Apr 20, 1983
• Grant date: Mar 11, 1986
• Expiry date: Apr 20, 2003

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01G9/0291
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process for growing nursery stock (e.g. trees, shrubs, etc.) involving the specific improvement of confining root propagation to a nonwoven porous polymeric fabric bag such that growth through the bag is severely constricted at the fabric, producing a girdling effect and root branching within the bag. Such a process leads to a tightly packed, highly root branched soil ball even in loose sandy loam that is easily removed from the field, readily transported and effective in re-establishing the tree upon transplanting even during the hot summer months.