Effects of foliar fungicide sprays on disease and yield of processing tomatoes in Ontario

alternaria solani application foliaire champignon colletotrichum colletotrichum coccodes colletotrichum dematium control de enfermedades crop yield cultivars disease control foliar application fongicide fungi fungicidas fungicides genetic variation hongos lycopersicon esculentum ontario pathogenese pathogenesis pathogens phytophthora infestans rendement des cultures rendimiento de cultivos septoria variedades varieties