Where taking a hay cut, well-rotted farmyard manure (stored for at least twelve months) may be applied at a rate of no more than 10 tonnes/ha once every two years.
Pan fyddwch yn torri gwair, gellir defnyddio tail buarth wedi pydru’n dda (wedi'i storio am o leiaf ddeuddeg mis) ar gyfradd o ddim mwy na 10 tunnell/hectar unwaith bob dwy flynedd.