Firefighters put out a grass blaze that spread to neighbouring crops and affected over 85 hectares of land near Mount Tenandra yesterday.

The Rural Fire Service (RFS) was alerted to flames off Walla Walla Road almost 30 kilometres east of Gulargambone at around 12:40pm on 31 October. Four trucks and around 20 people including farmers and RFS members attended.

The fire, likely caused by with sparks from a hand machine like a welder or angle grinder, was contained by 2:40pm.

"The early notification to triple zero from the landowner meant we were able to get trucks and members on the road a lot sooner than normal," said Inspector Luke Robinson, Acting District Manager for the FRS North West Zone.

Inspector Robinson could not say how many hectares of crop was affected.

He said the zone, which includes Coonamble, Walgett, Warren and Bogan shires, is currently seeing fires like this around four times a day.

An unlucky grain sausage found itself in the fire's path. IMAGE: RFS 

The Inspector said the majority are in Walgett where it is dryer.

"The grass and the crop is primed and ready for fire, so we need to try and take all necessary precautions to reduce the any ignition source to these areas," he said.

"If you're using grinders, welders, any equipment that can create a spark, make sure you have some form of water nearby.

"If you are doing it, try to do it in a mineral earth area and don't do it on days where we've got heightened fire danger."