
Andrew Ward, a farmer in Lincolnshire, England made a surprising decision back in 2002. He adopted a practice known as conservation tillage. This meant no more breaking up the soil or disturbing underground microbial life to remove weeds. Instead, he would allow organic matter left after the harvest to provide a protective layer for the soil. His fellow farmers looked on with skepticism—to this day, cultivation remains a traditional practice for controlling weeds. Andrew on the other hand, saw limitations in tillage.