FARMERS throughout the South-West have been faced with the problem of finding a method for renovating paddocks which have been established with kikuyu grass and paspalum over a long period. Both these grasses tend to produce a dense rootbound turf of varying depth which is very difficult to manage with conventional implements. If incompletely grazed, particularly during spring and early summer, kikuyu will form a dense spongy mass as much as three to four inches deep above the ground which effectively prevents the growth of all other species and considerably reduces the vigour of the grass