fungal disease anthracnose on black currant leaves in form of brown spots

anthracnose bacteria bacterial bacterium black blight brown cronarium currant damage danger dangerous deficiency disease dots farming fertilization foliage form fungal fungi fungicide fungus gloesporium illness impairment infected insect insects lack late leaf leaves midge mycosphaerella nature parasite pathogen pest pests plant problem puccina ribis septoria sick sickness spot spots unhealthy viral virus weakness