Big tractor Power is out in the field with a four big CHALLENGER MT800 tractors as they start planting the first field of corn for the 2020 planting season. Watch a 450 hp CHALLENGER MT855 and a 460 hp CHALLENGER MT855B working with a pair of 36ft KRAUSE Landstar soil finishers and 1225 Unverferth Rolling Baskets work on spring tillage ahead of two 460 hp CHALLENGER MT855B tractors with 24 row Kinze 3700 series corn planters.