Agricultural equipment is any kind of machinery used on a farm to help with farming The best known example of this kind is the tractor Farm machinery, mechanical devices, including tractors and implements, used in farming to save labour Farm machines include a great variety of devices with wide range of complexity from simple hand-held implements used since prehistoric times to complex harvesters of modern mechanized agriculture Examples are tractors, backhoes, balers, plows, harrows , seed drills, irrigation system, broadscast seeder, manure spreader.