Here are three EPA-legal ways to optimize the horsepower of a combine’s engine: 1. Make sure grain platform cutterbars are sharp and well-adjusted. Dull or out of adjustment sickles eat horsepower.

SIOUX FALLS, S.D. (KELO) — A crop field during harvest in KELOLAND could contain about $1 million worth of equipment. Today’s modern combine can cost about $600,000, said Nic Uilk, an precision ...