Alva Review-Courier -

CHENEY, Kan. (AP) — For years, Kansas farmer Clint Brauer has struggled with keeping weeds out of his row crops. Along with keeping living roots in the ground, organic practices and no-till methods, he tried crimping — but the pigweeds just grew taller.

Three years ago, Brauer, an ex-California-based executive who farms in Haven and Cheney, decided to implement a wild plan, using robots to behead weeds.

"I realized there was no great way to get the weeds out at scale without chemicals," Brauer said. "I needed to invent one."

He started Greenfield Robotics.

Before chemicals replaced them, worke...