<P> Over 50% of tractor related injuries and deaths are attributed to tractor rollover . </P> <P> Canadian agricultural equipment manufacturer Versatile makes row - crop tractors that are 250 and 280 horsepower (190 and 210 kW); powered by an 8.3 liter Cummins Diesel engine . </P> <P> Modern row crop tractors have rollover protection systems in the form of a reinforced cab or a roll bar . </P> <P> Garden tractors (mini tractors) are small, light tractors designed for use in domestic gardens and small estates . Garden tractors are designed for cutting grass, snow removal, and small property cultivation . In the U.S., the term riding lawn mower today often is used to refer to mid - or rear - engined machines . Front - engined tractor layout machines designed primarily for cutting grass and light towing are called lawn tractors; heavier - duty tractors of similar size are garden tractors . Garden tractors are capable of mounting a wider array of attachments than lawn tractors . Unlike lawn tractors and rear - engined riding mowers, garden tractors are powered by horizontal - crankshaft engines with a belt - drive to transaxle - type transmissions (usually of four - or five - speeds, although some may also have two - speed reduction gearboxes, drive - shafts, or hydrostatic or hydraulic drives). Garden tractors from Wheel Horse, Cub Cadet, Economy (Power King), John Deere, Massey Ferguson and Case Ingersoll are built in this manner . The engines are generally a one - or two - cylinder petrol (gasoline) engines, although diesel engine models are also available, especially in Europe . Typically, diesel - powered garden tractors are larger and heavier - duty than gasoline - powered units and compare more similarly to compact utility tractors . </P>

Who made the first tractor in the world