plant diseases Flashcards
give details of ring rot (5)
it is a bacterial disease caused by gram positive bacteria, it damages leaves, tubers and fruit, there is no cure. it affects potatoes, aubergines and tomatoes.
give two plant diseases caused by fungi and give details.
potato blight when fungus hyphae penetrates host cell destroys leaves, tubers and fruit. no cure but resistant strains and chemicals can help manage.
black Sigatoka - affects bananas, hyphae penetrates and digests cells turning them black. resistant strains are being developed, fungicides can control the spread. no cure.
give details on TMV
Tobacco mosaic virus affects tomatoes, peppers and cucumbers. stunts growth. damages leaves, fruit and flowers. resistant strains are being developed but there is no cure.
