Vegetable Crop Diseases


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Table of contents

Other fungi — Clubroot; Pythium species; Fusarium species; Rhizoctonia species; Sclerotinia and Sclerotium species — are soilborne diseases. Some fungal diseases occur on a wide range of vegetables. Others are specific to a particular crop group, e. Clubroot Plasmodiophora brassicae in brassicas, Leaf blight Alternaria dauci in carrots, and Red root complex in beans.

Fungal diseases in vegetable crops. Some examples of common fungal diseases of vegetable crops are provided in the table below with some typical symptoms.

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Vegetable Diseases: A Colour Handbook

Brassicas including Asian leafy brassicas. Wide host range including onions; peas; lettuce; celery; spinach; kale; herbs; cucurbits; brassicas; Asian leafy brassicas. Symptoms usually begin with yellowish leaf spots which then turn brown; downy growth appears on underside of leaves. Powdery mildews some species are restricted to particular crops or crop families Moderate temperatures ? C ; relatively dry conditions unlike downy mildews.

Minimize pest and disease damage with beneficial growing practices

Small, white, powdery patches on most above-ground surfaces; usually observed first on undersides of leaves but eventually cover both surfaces; affected leaves become yellow, then brown and papery and die. Clubroot Plasmodiophora brassicae Warm weather; acidic soil pH less than 7 ; high soil moisture. Pythium species Cold, wet soil conditions; known as water moulds, they enter untreated water supplies; water supplies for irrigation and hydroponics should be tested regularly.

Many vegetable crops in including cucurbits; brassicas; lettuce. May kill seedlings, which die before they emerge or soon after emergence; plant collapse.

Diseases of Vegetable, Ornamental and Spice Crops (2+1)

Sclerotinia rots S. Most vegetable crops. Water-soaked rotting of stems, leaves, and sometimes fruit; followed by a fluffy, white and cottony fungal growth which contain hard black pebble-like sclerotia. Sclerotium rots Sclerotium rolfsii and S. C and low moisture.

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Fusarium wilts and rots Various Fusarium species including F. Wide host range including: brassicas; carrots; cucurbits;onions; spring onions; potato; tomato; herbs; peas; beans. Causes severe root and crown rots or wilt diseases by attacking roots and basal stems; cucurbit fruit and potato tubers can be affected in storage. Botrytis rots — for example Grey mould Botrytis cinerea Cool, wet weather. Celery; lettuce; beans; brassicas; cucumber; capsicum; tomato. Softening of plant tissues in the presence of grey fungal growth. Anthracnose Colletotrichum spp.

Wide range of crops including: lettuce; celery; beans; cucurbits; tomato, capsicum; potato; globe artichoke. Rhizoctonia rots Rhizoctonia solani — range of common names, e.

Vegetable Diseases: A Colour Handbook - CRC Press Book

Bottom rot lettuce and Wire stem Brassicas Warm, humid weather; can survive for long periods in the soil in the absence of a host plant. Please note: This content may be out of date and is currently under review. This web article describes the most common diseases of vegetables in home gardens.

Fruit and vegetable diseases Diseases caused by fungi and bacteria Bacterial speck Clubroot Leaf spot diseases Damping-off Downy mildew Powdery mildew Tuber diseases White mould Wilt diseases. Blossom end rot. See Also Diseases of vegetable brassicas. Managing clubroot in vegetable brassica crops. Virus diseases of vegetable brassica crops.

Cavity spot disease of carrots. Fusarium dry rot of potatoes. Cucumber mosaic virus in Capsicum. Biosecurity Blitz protects agriculture from pests and diseases.

Regions Gascoyne. Great Southern. Mid West. Perth regions. South West.

Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases Vegetable Crop Diseases
Vegetable Crop Diseases

Related Vegetable Crop Diseases



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