A tractor valued at over $300,000 was destroyed by fire Wednesday morning in a field northwest of Lamesa.The 2020-model 8320R John Deere tractor, pulling a disc plow and packer, was fully engulfed in flames when Lamesa firefighters arrived at the scene about a mile west of FM 829 near Co. Rd. 12, according to the fire department’s report.Firefighters were able to extinguish the flames with a mixture of water and foam. With the hydraulic oil at a boiling point, however, additional time was spent continuing to cook the tank to keep the fire from reigniting.Seven firefighters with three fire trucks ...