UAHS SHIVAMOGGA - MANOJ NS

1. :
Diseases Of Vanilla
:
MANOJ NS
BA1TAE042
Diseases of vanilla
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2. Root rot:
Fusarium sp., Sclerotium sp.
Symptoms
 Browning of roots leading to rotting and decay.
Yellowing of leaves, stem and leaves becoming
flaccid, shriveled and giving a drooping
appearance.
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3. Browning of
roots
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5. Management
Cut and remove the affected roots, reduce
mulch.
Soil drench and spray the plant with 0.2 %
Copper oxychloride @ 2 or 3 litre per plant.
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6. Stem rot: Fusarium sp. Fusarium
oxysporum f.sp.vanillae
Symptoms:
Water soaked lesions giving stem a brown coloured
appearance resulting in rotting of tissues, leaves turning
yellowish and drying off.
When the basal or middle portions of the vines decay
and shrivel, the remaining distal portions of the vines
show wilting symptoms.
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7. Roting of
tissues
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8. Brown Coloured
Tissues
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9. Cut and remove the affected portion
Spray 0.2% Carbendazim, repeat spray after
one month.
Management
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10. Bean rot: Phytophthora sp.
Symptoms
Rotting and shedding of bean
Phytophthora rot develops at the tips of beans,
slowly extends towards the pedicel and the
affected beans show water soaked lesion which
become dark green leading to rotting of the
beans.
Sclerotium rot is characterized by rotting of bean
tips and affected portion shows white thick mats
of fungal mycelium .
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11. Rotting and shedding
of bean
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Diseases of vanilla

13. Management
Spray 0.1% Carbendazim and 1 %
Bordeaux mixture alternatively at
weekly intervals Remove and destroy
infected plant parts and mulch during
rainy season.
Allow at least 30-50% light to fall on
the vines.
Spray bordeaux mixture (1.0%) and
drench soil with 0.25% copper
oxychloride.
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14. Shoot tip rot:
Casual organism : Fusarium,
Sclerotium
Symptoms
• Decaying of shoot tip and leaves at the tip
Management
• Spray 0.1% Carbendazim at 15 days interval.
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15. DECAYING OF SHOOT TIP AND
LEAVES AT THE TIP
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16. Vanilla mosaic: Vanilla mosaic virus
Symptoms
Mosaic pattern or mottling on foliage.
Stunting sterility and leaf distortion
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17. Mosaic pattern on leaves
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18. Diseases of vanilla
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19. Management
Uproot and destroy the affected plant
Use of virus-free planting material is the primary
requirement to check spread of the virus.
Weed and crop hosts which might act, as reservoir
needs to be removed.The removed plants may be burnt
or burried deep in the soil.
Insects such as aphids act as vectors for the different
viruses. Insecticides like monocrotophos at 0.0 5% can
control aphids, and other sucking insects.
Movement of planting materials from infected regions
to disease free regions should be avoided
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20. Leaves and Stem blight
C.o : Colletotrichum vanilla
Symptoms :
appearance of brown spots on leaves and stems
followed by yellowing of leaves and rotting of
leaves and stem
Management :
 Spray 1 % bordaeux mixture or 0.4%potassium
phosphonate
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Diseases of vanilla

21. Brown spots on leaves
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22. Timely shade management
Avoid excess moisture
Allow free movement of air
Avoid overcrowding of vines by keeping adequate spacing
Avoid excessive mulching during rainy season and mulching
with materials that are not easily decomposed
Avoid excessive manuring and use of fresh cow dung.
Apply recommended doses of bio agents
like Trichoderma, Pseudomonas, Bacillus etc.
Collect and destroy the parts of plants showing disease
symptoms.
Important prophylatic measures
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