© Olivia-Cooper
US farmer Douglas Harford has more than doubled the organic matter content of his soil over his farming lifetime, and his son Chris plans to increase it still further to drive up productivity. “We get hung up on fertiliser usage, but we’re talking about a really small amount of the crop – a plant is mostly made of carbon,” he explains. “Sequestering carbon is good for us as farmers, as all of the plants’ needs come out of the earth.” It wasn’t […]