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THE CROP DISEASES OF SIKKIM
HIMALAYAS |
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CROP:
TOMATO
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Scientific Name |
Lycopersicum esculentum |
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State/World wide |
South America; States:
U.P, W.B, Bihar, H.P, T.N, Punjab, Gujrat,
Sikkim, Meghalaya, etc.
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Common Name of Disease:
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1. LATE BLIGHT |
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Local Name of Disease |
- Pilsiney
bimar |
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Causal Organism |
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Phytopthora
infestens |
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Distribution of Disease in Sikkim
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Late blight is the most serious disease in potato in the
hills where the weather condition in comparatively more
congenial.
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Disease Incidence |
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Low to medium |
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Site of Infection |
- The pathogen attacks all parts of the
plant.
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Dissemination of the Disease |
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Symptoms
On tomato fruits
symptoms appear at any stage of growth and may be most
frequent near the stem end. Grey-green water-soaked spots
enlarge to indefinite size and shape. On the lower surface
of leaf, flour like white zone is seen at the periphery of
lesion.On petiole or stem, purple or black lesions appear.
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Favourable environmental condition for
disease
Phytopthora is a low temperature fungus- cool
temperature (5-12 degree centigrade) and muggy weather is
most favourable. Pathogen is susceptible to bright sun (>24
degree centigrade).Mode of Transmission: Pathogen is
transmitted through planting of infected tubers.
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Life cycle of
Organism -
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Plant Protection
Measures
Grow
tolerant variety. Seed treatment with Trichoderama sp and
also soil treatment with the same.
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| Bioinformatics Sub- DISC, SSCS&T |
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