The blaze broke out at a barn in Lydbury North, near Bishop's Castle, last night and six fire crews from across the south of the county were sent to the scene.
No-one was hurt in the blaze, but seven tonnes of straw and five tonnes of corn went up in smoke.
The cause of the fire, which broke out at about 7pm, is being investigated. The fire was under control within an hour and crews remained at the site during the evening damping down in the area.
Six fire crews were sent from Bishops Castle, Bridgnorth, Clun and Craven Arms.
A fire service spokesman for Shropshire Fire and Rescue said: "There were some cattle in the barn but they were moved quickly to a nearby field.
"There has been no mention of how the fire started and a report will now be complied into the incident."