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Diseases
Sclerotinia blight
Sclerotinia sclerotiorum
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Sclerotinia blight.
Often occurs in wetter seasons under conditions that often favour botrytis grey mould.
Appears mainly on older plants.
Use disease free seed.
Do not grow in close rotation with canola, pulses and broadleaved weeds such as capeweed.
Avoid sowing adjacent to infected stubble.
Eliminate infected stubbles.
Water soaked patches on stems and lower leaves develop a soft, slimy rot which exudes droplets of a brown liquid.
When dry, a fine white fungal growth including sclerotes develops.
Affected plants wilt and rapidly die.
Infected weeds are smaller and discoloured.
K Lindbeck, formerly VDPI