Hall Ag Services is chopping corn silage at Convoy Dairy near Convoy, Ohio, with two John Deere 9900i self-propelled forage harvesters. There is plenty of action in this video! In the field directly behind the dairy, one of the John Deere 9900i choppers is harvesting corn while three tractors haul silage with K Two dump carts — a John Deere 8R 250, John Deere 7R 290 and Massey Ferguson 9S.340. Mike Less - Farmhand Mike