Eight fire engines were reportedly dispatched to the scene, which covered about 20 hectares of land, and firefighters spent 90 minutes putting out the fire.
A spokesman for Kent Fire and Rescue Service said: “We were sent to reports of a permanent arable fire in the fields of Lenham Heath.
“Crews worked hard to control the fire which covered approximately eight hectares, the equivalent of almost 20 acres.
“The fire has been brought under control and extinguished. Firefighters escorted people in the vicinity to safety.”