A-Z list horticultural diseases and disorders

  • Alfalfa (lucerne) mosaic

    The horticultural disease alfalfa (lucerne) mosaic has a wide range of hosts among legumes and other broad-leafed plants.

  • Anthracnose

    Information on Anthracnose, which affects rockmelon, honeydew, tomato, chilli, capsicum, avocado, citrus, mango, cashew, passionfruit, banana and most other tropical crops.

  • Armillaria root rot

    Information about the horticultural disease armillaria root rot, which affects apple, banana, citrus, custard apple, grape, macadamia, pear and stone fruit.

  • Bacterial blight

    Information on Bacterial blight which affects Mango, stone fruit, pear and beans

  • Bacterial canker in vegetables

    Information on Bacterial canker, which affects tomato, capsicum, chilli and capsicum.

  • 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

  • Bacterial soft rots

    Information on Black leg X (bacterial soft rots), which affect potato, lettuce, sweetpotato, tomato, capsicum, avocado and banana.

  • 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.

  • Basil downy mildew

    Basil downy mildew is a serious disease of basil.

  • Bacterial wilt

    Information on Bacterial wilt, which affects potato, tomato, egg fruit, capsicum and custard apple.

  • 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.

  • Black spot

    Black spot (Colletotrichum acutatum), can cause anthracnose disease on many fruit crops such as

  • Botrytis (grey mould)

    Information on Botrytis (grey mould), which affects tomato, bean, capsicum, cucumber, brassicas, lettuce, onion, grapes, strawberry, mango and macadamia.

  • Cercospora leaf spot

    Cercospora leaf spot affects bean, beetroot, capsicum, okra, silver beet, watercress, carrot, avocado and coffee.

  • Charcoal rot

    Black spot (Colletotrichum acutatum), can cause anthracnose disease on many fruit crops such as

  • 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.

  • Downy mildew

    Information on Downy mildew, which affects curcubits, grape, lettuce and onions.

  • Fusarium rot

    Information on Fusarium rot, which affects potato, rockmelon and sweet corn.

  • Fusarium wilt (yellows)

    Information on Fusarium wilt, which affects basil, brassicas, curcubits, lettuce, alliums, pea, potato, snake bean, ginger and tomato.

  • 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

  • Lethal yellows

    Information on Lethal yellows, which affects strawberries.

  • Lettuce necrotic yellows

    Information on Lettuce nectrotic yellows, which can cause serious sporadic losses in lettuce crops.

  • Papaya leaf diseases

    Information on Phytophthora fruit disease, which affects tomato, strawberry, onion, fig, durian and papaya.

  • Papaya: Phytophthora diseases

    Information on Phytophthora diseases in papaya.

  • Papaya: Ripe fruit rots

    Information on ripe fruit rots in papaya.

  • Papaya ringspot disease

  • Phytophthora fruit disease

    Information on Phytophthora fruit disease, which affects tomato, strawberry, onion, fig, durian and papaya.

  • 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.

  • Potato brown fleck

    Information on Potato brown fleck, a disorder which affects potato.

  • Powdery mildew

    Information on rhizoctonia, which affects almost all cultivated plants.

  • Rhizoctonia

    Information on rhizoctonia, which affects almost all cultivated plants.

  • Sclerotinia rot

    Sclerotinia rot is a disease which affects a wide range of vegetable, fruit and field crops.

  • Sclerotium disease

    Information on Sclerotium disease, which affects a range of vegetable crops including bean, beetroot, capsicum, carrot, cucurbits, sweetpotao, potato and tomato.

  • Spotted wilt and related viruses

    Information on Spotted wilt and related virusesl, which affect over 900 species of weeds, field crops, vegetables and ornamentals.

  • Stem end rot

    Information on stem end rot, which affects mango, avocado, citrus.

  • Sudden wilt

    Sudden wilt affects capsicum, rockmelon and honeydew.

  • Sweetpotato feathery mottle

    Information on Sweetpotato feathery mottle, which occurs in almost all countries where sweetpotato is grown.

  • Tomato yellow leaf curl virus

    Information on tomato yellow leaf curl virus symptoms and damage, how it spreads and how to manage the virus.

  • Transit rot

    Transit rot disease affects mango, tomato, capsicum, rockmelon, stone fruit and sweetpotato.