Six John Deere 9870 STS Combines Harvesting Wheat July 17, 2011 by farmlifetoday bigtractorpowerSun, July 17, 2011 1:58pmURL:Embed:Garnett Farms 2011 Wheat Harvest with 6 John Deere 9870 STS combines, 3 John Deere 9300 4wds and KInze 1050 Grain Carts.