After years of sitting on a tractor to knock down vineyard weeds with an old grape hoe, only doing about an acre an hour and always causing some vine damage, Dave Kohler finally reached his breaking point. Nearly ten years ago, he’d had enough and was determined to figure out another way to mechanically weed the vineyard. In 1992, he put his old Green hydraulic hoe away for good and used farmer creativity to develop a new type of weeder. After a decade of ­revisions and modifications, his device is now being sold commercially. “It’s mind-blowing to sit on a […]