It is the first day of the 2018 wheat harvest in Western Kentucky. Big Tractor Power is out in the field with 8 John Deere class 9 combines with 45ft MacDon Draper heads, 4 John Deere 9420R 4wd tractors and Kinze carts. We will climb up in the cab of the John Deere S790 and learn about how the combine works.