John Deere has been making efforts to encourage the use of biodiesel in it’s tractors and combines, at least on a small scale. ZimmComm contributing blogger Andy Vance of Ohio interviewed John Deere’s Barry Nelson about those efforts at the National Farm Machinery Show in Louisville, KY. Listen to the interview here. Andy has become a regular contributor for us on World Dairy Diary recently. He and his wife Lindsay Hill operate the Buckeye Ag Radio Network – the BARN – in Ohio. Kind of like me and my spouse – only we have no barn and we’ve already done the farm network thing, but we are still basically in the same business.