bigtractorpower -2023-Are You Ready for SPRING FIELD WORK? In the field with three JOHN DEERE tractors hard at work on early spring field preparation for corn planting. Working in this Western Kentucky field is a 620 hp JOHN DEERE 9620RX tractor, a 345 hp JOHN DEERE 8345R tractor and a 210 hp JOHN DEERE 7210R tractor.