It’s a proverb that works well for soil erosion, and it’s what Rick Cruse, professor of agronomy at Iowa State University, tells everyone — from his students to farmers.“Once the process of erosion starts, it’s like the horse that just got out of the barn with fresh legs. It’s going to take off,” he says.Three basic principles lead to erosion: detachment of soil particles, transport by flowing water, and deposit of the soil particles away from the source.
展开▼
