Former Black Cap Jesse Ryder has been handed a $500 fine for serious dissent.

Jesse Ryder has been found guilty of serious dissent following a verbal volley at an umpire in a Wellington club cricket match.

Ryder was bowling for Petone-Eastbourne in a Twenty20 knockout competition semifinal against Karori at Kilbirnie Park on February 24.

He had an appeal for lbw against Wellington Firebird Stephen Murdoch turned down by former international umpire Evan Watkin and is understood to have then let his feelings about the decision known to Watkin in a loud and clear manner on the way back to his mark.

Watkin and fellow umpire Paul Cummings filed a written report after the match, which Petone-Eastbourne won, and Ryder was charged with serious dissent towards an umpire's decision.

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A code of conduct hearing wasn't convened till last Wednesday, after Ryder played a significant role in Petone's win over Taita in the final.

It is understood Ryder did not attend the hearing, but his Petone-Eastbourne captain BJ Crook did.

On Thursday, Cricket Wellington chief executive Peter Clinton said the written decision from the hearing was released on Wednesday to all related parties.

In it, Ryder was found to have breached the rules of cricket in regard to serious dissent.

He was fined the recommended $500 for the level two offence.

Clinton said the written decision would not be released to the public.

It was the 31-year-old's second serious dissent breach in the space of 12 months after he was suspended from Otago's final Plunket Shield match of last season for using offensive language after being given out.

In 2012 he fronted a Cricket Wellington hearing and escaped with a reprimand after being charged with unacceptable behaviour following an ugly clash with his former Wellington team-mate Harry Boam in a club match.