CONVEYOR ROLLER; PRECISION BEARINGS MOUNTED IN COLLARS HAVING LOW TOLERANCE FITS ON ROLLER AND AXLE

摘要

A method for conserving water in lawn maintenance is described. According to the method, a layer of of a water-absorbent, nonbiodegradable material is provided between the ground and a layer of sod. This absorbent layer retains water which may be reached by the roots of the plants in the sod layer. This layer may also be used to retain lawn chemicals. The lawn produced by the foregoing method is also described.