A fungal disease that causes blister like swellings, usually on the underside of leaves, that burst and release a mass of powdery, dark brown spores. These pustules may be surrounded by a ring of secondary pustules. With severe infections, leaves may wither and fall and plant growth is reduced.
Species Affected:
Carnations, Chrysanthemum
Biology:
Favoured by moist weather.
Spores are spread by wind.
Life Cycle:
Origin and History:
Distribution:
Significance:
Management and Control:
Plant tolerant varieties.
Remove and destroy diseased leaves.
Apply fungicides as soon as the disease is seen.
Related and Similar Species:
References:
1205
Acknowledgments:
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