Wichita ? Wichita officials say they are expecting a fight with the state if Wichita residents approve an ordinance that would lower penalties for possession of small amounts of marijuana.

The Wichita City Council voted Tuesday to put the measure on the April 7 ballot. It would make first-offense marijuana possession a criminal infraction with a $50 fine. Offenders would receive a summons rather than be arrested. The change would apply only to those 21 or older, or those carrying 32 grams or less of marijuana.

If approved, the ordinance would conflict with state law.

Mayor Carl Brewer says several state legislators don’t want the issue on the ballot. Council member Janet Miller said it’s almost certain that the state will try to nullify the ordinance if Wichita residents approve it.