A pasture sown in May 1969 consisting mainly of lucerne Fortin Pergamino with some clover and grass was grazed by heifers before being divided into plots in April 1970. Heifers at various stocking rates were allocated to one of 3 rotational grazing systems or to a continuous grazing system; transfer of animals was based on the condition of the pasture. Growth and development of lucerne in the plots was investigated in Aug. 1972.