A-Z list horticultural diseases and disorders
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Alfalfa (lucerne) mosaic
The horticultural disease alfalfa (lucerne) mosaic has a wide range of hosts among legumes and other broad-leafed plants.
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Anthracnose
Information on Anthracnose, which affects rockmelon, honeydew, tomato, chilli, capsicum, avocado, citrus, mango, cashew, passionfruit, banana and most other tropical crops.
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Armillaria root rot
Information about the horticultural disease armillaria root rot, which affects apple, banana, citrus, custard apple, grape, macadamia, pear and stone fruit.
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Bacterial blight
Information on Bacterial blight which affects Mango, stone fruit, pear and beans
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Bacterial canker in vegetables
Information on Bacterial canker, which affects tomato, capsicum, chilli and capsicum.
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Bacterial fruit blotch
Information on Bacterial fruit blotch, which affects watermelon, honeydew, rockmelon; weeds such as wild cucurbits, paddy melon and prickly paddy melon; tomato and eggplant can become infected under
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Bacterial soft rots
Information on Black leg X (bacterial soft rots), which affect potato, lettuce, sweetpotato, tomato, capsicum, avocado and banana.
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Bacterial spot
Bacterial spot is a serious disease affecting many fruit and vegetable crops and is capable of surviving on weeds and nearby host crops.
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Basil downy mildew
Basil downy mildew is a serious disease of basil.
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Bacterial wilt
Information on Bacterial wilt, which affects potato, tomato, egg fruit, capsicum and custard apple.
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Black root rot
Information on Black root rot, which affects a wide range of crops including lettuce, bean, watermelon, rockmelon, cucumber, tobacco, sweet pea and pansy.
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Black spot
Black spot (Colletotrichum acutatum), can cause anthracnose disease on many fruit crops such as
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Botrytis (grey mould)
Information on Botrytis (grey mould), which affects tomato, bean, capsicum, cucumber, brassicas, lettuce, onion, grapes, strawberry, mango and macadamia.
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Cercospora leaf spot
Cercospora leaf spot affects bean, beetroot, capsicum, okra, silver beet, watercress, carrot, avocado and coffee.
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Charcoal rot
Black spot (Colletotrichum acutatum), can cause anthracnose disease on many fruit crops such as
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Damping off
Information about damping-off, which is the destruction of seedlings by pathogens. Seedling plants of almost all fruit, vegetable, field and ornamental crops are liable to attack.
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Downy mildew
Information on Downy mildew, which affects curcubits, grape, lettuce and onions.
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Fusarium rot
Information on Fusarium rot, which affects potato, rockmelon and sweet corn.
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Fusarium wilt (yellows)
Information on Fusarium wilt, which affects basil, brassicas, curcubits, lettuce, alliums, pea, potato, snake bean, ginger and tomato.
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Gummy stem blight
Information on Gummy stem blight, which affects cucurbits, particularly in tropical and subtropical areas. The disease can cause serious losses in watermelon, rockmelon, honeydew, squash, pumpkin and
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Lethal yellows
Information on Lethal yellows, which affects strawberries.
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Lettuce necrotic yellows
Information on Lettuce nectrotic yellows, which can cause serious sporadic losses in lettuce crops.
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Papaya leaf diseases
Information on Phytophthora fruit disease, which affects tomato, strawberry, onion, fig, durian and papaya.
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Papaya: Phytophthora diseases
Information on Phytophthora diseases in papaya.
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Papaya: Ripe fruit rots
Information on ripe fruit rots in papaya.
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Papaya ringspot disease
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Phytophthora fruit disease
Information on Phytophthora fruit disease, which affects tomato, strawberry, onion, fig, durian and papaya.
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Phytophthora root rot
Information on Phytophthora root rot, which is the most destructive and important disease of avocado. It also affects macadamia, pineapple and stone fruit.
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Potato brown fleck
Information on Potato brown fleck, a disorder which affects potato.
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Powdery mildew
Information on rhizoctonia, which affects almost all cultivated plants.
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Rhizoctonia
Information on rhizoctonia, which affects almost all cultivated plants.
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Sclerotinia rot
Sclerotinia rot is a disease which affects a wide range of vegetable, fruit and field crops.
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Sclerotium disease
Information on Sclerotium disease, which affects a range of vegetable crops including bean, beetroot, capsicum, carrot, cucurbits, sweetpotao, potato and tomato.
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Spotted wilt and related viruses
Information on Spotted wilt and related virusesl, which affect over 900 species of weeds, field crops, vegetables and ornamentals.
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Stem end rot
Information on stem end rot, which affects mango, avocado, citrus.
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Sudden wilt
Sudden wilt affects capsicum, rockmelon and honeydew.
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Sweetpotato feathery mottle
Information on Sweetpotato feathery mottle, which occurs in almost all countries where sweetpotato is grown.
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Tomato yellow leaf curl virus
Information on tomato yellow leaf curl virus symptoms and damage, how it spreads and how to manage the virus.
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Transit rot
Transit rot disease affects mango, tomato, capsicum, rockmelon, stone fruit and sweetpotato.