Show lew air power hoe replaces drudgery of hand farming SAN FRANCISCO one answer to her gher agricultural production costs ray be found bound in the air power hoe invented by frank king sugar beet tower rower although the machine Is bechani bally uy practical actual savings in op rating costs cost are not known yet lys y J P fairbanks university ot of agricultural engineer roo saw it demonstrated i he added that the savings would ive ave to be high because the hoes olt t about each to make plus e air compressor cost of tractor td d drivers driver wages however it replaces the druda ry fy of 0 hand hoeing and workers ont have a chance to lean on a i andle and rest he said UP to 20 rows row c can an be weeded at ce t A tractor draws an air corn com 1 ressor slowly down the field with ir r hoses attached on each side ach hose is connected to a hoe th h a piston at the top of the idle compressed air jabs the hade ado back and forth much like a 6 |