The Otago Rugby Football Union says it is up to rugby to take a stand in the wake of recent abusive and racist behaviour at some matches.
ORFU general manager Richard Kinley has issued a memo to all clubs, schools, players, coaches and supporters after anecdotal reports of an increase of sideline incidents that were not that positive.
Kinley said he wanted to get the memo out before the behaviour escalated and got out of control.
Overall, 99% of spectators were well behaved and positive but there was always the odd person who spoiled it for everyone.
''We do not want to be forced to put in measures to regulate sideline behaviour.''