2016 Spring Field Work: Three 620 hp John Deere 9620R 4wds March 11, 2016 by farmlifetoday bigtractorpowerFri, March 11, 2016 2:31pmURL:Embed:John Deere 9620R 4wds applying anhydrous ammonia ahead of 2016 corn planting with 60ft Blu-Jet AT6020. http://www.bigtractorpower.com