| about INSV |
| Attacks by INSV(Impatiens Necrotic Spot tospovirus) to cyclamen were confirmed a few years ago, and it seems to be epidemic. Caractaristic phenomena of this disease is necrotic spot. |
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| cyclamen leafs dameged by INSV |
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| about bacterial disease | | There are three bacterial disease of cyclamen as follows, |
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Cyclamen 'hagusare-byou' (Erwinia)
Lesion on the leaf is black, tuber vascular bundle turns to black. No rotted smell |
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Cyclamen 'nanpu-byou' (Erwinia)
Wet lesion on the leaf. Fishy bad smell. |
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Cyclamen 'megusare-byou' (Pseudomonas)
Invades from hurted point, then base of leaf or flower changed to wet. can reach to leaf bud or tuber. vascular bundle turns to purple-black. little rotted smell. |
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| These three cannot be recovered, prevention is important. |
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| bacterial name | Pseudomonas | Erwinia |
| disease name |
Cyclamen 'megusare-byou'
can damge napa cabbage, lettuce, cucumber, melon, water melon etc. |
Cyclamen 'hagusare-byou'
Cyclamen 'nanpu-byou' |
| extraction | put dameged sample into water, then white bacteria outflow. | use blender (lesion is genuine cultured) |
| temperature | 25 - 37 degree C | 32 - 35 degree C |
| soil ph | over ph6 | ph6 to 7 |
| caracteristic | distributes surface of soil. long life after invades soil or pod. | distributes about 70cm depth of soil. long life (over 5 years in soil.) invades from hurted point. |
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