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2. Md. Rubel Mia
12309056
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3. Topic name:
Diseases of Sunflower & Their
Management.
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4. Content
About Sunflower
List of the diseases by pathogen
Symptoms & management of diseases
Pictures of some diseases
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5. About Sunflower
English name:
Sunflower
Scientific name:
Helianthus annuus
Family: Asteraceae
Genus: Helianthus
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6. List of sunflower diseases
Bacterial diseases
Apical chlorosis Pseudomonas syringae pv. tagetis
Bacterial leaf spot Pseudomonas syringae pv. helianthi
Bacterial wilt Pseudomonas solanacearum
Crown gall Agrobacterium tumefaciens
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7. Alternaria leaf blight Alternaria alternata
Downy mildew Plasmopara halstedii
Powdery mildew Erysiphe cichoracearum
Rust Puccinia helianthi
Septoria leaf spot Septoria helianthi
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8. Nematodes
Pin Paratylenchus projectus
Lesion Pratylenchus hexincisus
Root knot Meloidogyne arenaria
Spiral Helicotylenchus sp.
Stunt Quinisulcius acutus
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9. Viral diseases:
Aster yellows Aster yellows phytoplasma
Sunflower mosaic Cucumber mosaic virus
Sunflower virus Tobacco mosaic virus
Chlorotic Mottle
Sunflower Chlorotic Mottle
virus (SuCMoV)
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10. charcoal rot - Rhizoctonia bataticola
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11. Managemen
t
Closer planting of the
seedling should be
avoided.
Treat the seeds with
Carbendazim or
Thiram at 2/kg
Symptom
s
• The pathogen is
seed-borne and
primarily causes
seedling blight
• The grown up plants
also show symptoms
after flowering stage.
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12. Leaf blight - Alternaria helianthi
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13. • The pathogen produces
brown spots on the
leaves, but the spots can
also be seen on the stem,
sepals and petals.
• The lesions on the leaves
are dark brown with pale
margin surrounded by a
yellow halo.
Symptoms Management
Deep summer
ploughing.
Proper spacing
Clean cultivation
and field sanitation.
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14. Rust - Puccinia helianthi
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15. • Small, reddish brown
pustules covered with
rusty dust appear on
the lower surface of
bottom leaves.
• The black coloured telia
are also seen among
uredia on the lower
surface.
Symptoms Management
Previous crop remains
should be destroyed.
Removal of crop
residues
Spray Mancozeb at
2kg/ha.
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16. Powdery mildew - Erysiphe cichoracearum
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17. • The disease produces
white powdery
growth on the leaves
White to grey mildew
on the upper surface
of older leaves.
Symptoms Management
 Complete field and
crop sanitation.
 Early varieties
should be preferred.
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18. Head rot - Rhizopus sp.
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19. Basal rot - Sclerotium rolfsii
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20. Necrosis -Tobacco streak virus (TSV)
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