New Zealand's cricketers are going to have to have their calculators in their pockets while playing in the State Shield one-day series this summer.

Bonus points have become a reality of the January domestic one-day fest, and they will take some getting used to.

If a team achieves a run rate of 1.25 more than the opposition, whether batting first or chasing, it will receive a bonus point.

However, there are fish hooks in the system. The calculation of 25% is based on the target of the team batting second.

And when the Duckworth/Lewis system becomes involved school certificate maths are not likely to be enough to work out the requirements for bonus points.

In order to make the worth of the bonus point more manageable, four points will be awarded for a win. A tie or no result will be worth two points.

In the State Championship, teams could also find themselves going out to bat in wet weather, after having left the field for rain.

An addition to Law 3.8 states: "If conditions during a rain stoppage improve and the rain is reduced to drizzle, the umpires must consider if they would have suspended play in the first place under similar conditions.

"If both on-field umpires agree that the current drizzle would not have caused a stoppage, then play shall resume immediately."

Shadows on pitches from the stadium or permanent objects will be disregarded by umpires in the future.

New Zealand Cricket umpiring panels this year are:

International: Brent Bowden, Doug Cowie, Steve Dunne, Tony Hill, Dave Quested, Evan Watkin.

NZC A Panel: Robert Anderson, Gary Baxter, Mike George, Barry Frost.

NZC Reserve Panel: Jeremy Busby, Kathy Cross, Dave Ellwood, Glenn Holdem, Rob Kinsey, Wayne Knights, Kevin Manley, Craig Morris, Ross Murdoch, Dave Paterson, Tim Parlane, Ian Shine, Mel Spencer-Smith, Graham Wilkinson, Peter Wright.

Code of Conduct Commissioners are:

National: Nic Davidson (Christchurch).

Auckland: Fred Thorpe, Andrew Gilchrist, Greg Jones, Rhys Harrison QC.

Canterbury: Judge Graham Noble, Peter Doody, Lee Robinson, Robert Vincent (Timaru), Keith Hales (Rangiora), Tony Sullivan (Greymouth).

Central Districts: Jock Sutherland (Nelson), Blair Robinson (Napier), Gary Spooner (Wanganui), Terry Killalea (Waikanae), Mike Ryan (Palmerston North), Jock Blathwayt (Carterton), Stephen Harrop (New Plymouth), Chris Clark (Marlborough), Roger Downey (Horowhenua).

Northern Districts: Gerald Bailey (Hamilton), David Wilson QC (Hamilton), Graeme Mathias (Whangarei), Dean Clarke (Cambridge), Peter Lewis (Rotorua), Wayne Callaghan (Gisborne), Alan Vale (Taupo), David Small (Tauranga), Richard Blackwood (Pukekohe).

Otago: Jim Barrie (Clyde), Ted Tempero (Oamaru), Ian Folster (Invercargill), John Henderson (Dunedin).

Wellington: Tim Castle, Ross Crotty, Robert Armstrong, Wayne Chapman, Mike Gould.

© CricInfo