Summary Diversified cropping systems can have high soil microbial biomass and thus strong potential to reduce the weed seedbank through seed decay. This study, conducted in Iowa, USA, evaluated the hypothesis that weed seed decay is higher in a diversified 4-year maize–soyabean–oat/lucerne–lucerne cropping system than in a conventional 2-year maize–soyabean rotation. Mesh bags fill…
Diversified cropping systems can have high soil microbial biomass and thus strong potential to reduce the weed seedbank through seed decay. This study, conducted in Iowa, USA, evaluated the hypothesis that weed seed decay is higher in a diversified 4-year maize–soyabean–oat/lucerne–lucerne cropping system than in a conventional 2-year maize–soyabean rotation. Mesh bags filled with eith…