A potato pulp was mixed with shredded couch grass rhizomes (size of pieces below 4 mm, humidity 9.1%) in proportions 15-25% by mass, than compacted and granulated to obtain a fodder additive. The granulator demand for elec. power, kinetic strength of granules, their d. and the content of phenolic compds. were detd. The increase of potato pulp content in the tested mixts. from 15 to 25% resulted in redn. of power demand, kinetic strength of granules, their d. and the total content of phenolic acids by 46%, 10%, 38% and 38% resp.