The phrase "small tractors" refers to vehicles that are smaller in size than regular tractors. They are designed to perform tasks like plowing fields or moving heavy objects, but they are more compact and easier to maneuver. Full definition
Utilized a variety of small tractors and outdoor maintenance equipment to install new sod, leaf removal, pressure cleaned exterior surfaces, and provided all maintenance of equipment. (resumemycareer.com)
Now vehicles come big and small, average sized utes, small tractors to huge harvesters and to my surprise all can be controlled with ease. (mkaugaming.com)