Clubroot populations in SE Scotland [Plasmodiophora brassicae]

agentes nocivos biogeografia biogeographie biogeography brassica british isles champignon cruciferae dicotiledoneas dicotyledons diseases distribution naturelle encuestas enfermedades fungosas escocia europa europa occidental europe europe occidentale facteur nuisible fungi geografia geographie geography grande-bretagne great britain injurious factors mycose mycoses natural distribution plantas plante plants plasmodiophora population reino unido rhoeadales royaume-uni scotland surveys united kingdom western europe