HEREFORD United manager Graham Turner has hit out at the standard of refereeing in the Nationwide Conference.

Turner's frustrations boiled over following Ryan Green's dismissal in the 1-0 defeat to Tamworth at the weekend and four other yellow cards for his side.

Green and striker David Brown, who picked up a fifth caution, will now miss United's crucial New Year's Day trip to Exeter City.

Jamie Pitman, Danny Williams, Ben Smith and Tony James are also walking a disciplinary tightrope ahead of Friday's game at Forest Green.

Turner said: "I think it is difficult to avoid with referees we had like the one that sent off Ryan Green," he said.

"I've studied the video and it's a diabolical sending off. For some of the other bookings I think referees are devoid of common sense and the art of communication.

"Almost every foul prompts a yellow card at our level.

"Referees seem to be more tolerant higher up but in the Conference they leave you pulling out your hair at times."