In this episode we explore the science and practice of biofumigation - the use of a temporary brassica (mustard) cover crop to help manage soil pathogens and weeds. Katie Bliss introduces footage from a webinar which features researcher Dr Matthew Back (Harper Adams University) and Alec Roberts (Tozer Seeds) in a lively discussion with a group of growers innovating with enhancing diversity in protected cropping as part of the DiverIMPACTS project.