Periods of onset of leaf symptoms of major fungal diseases 
| Phenological stages  | 
Powdery mildew  | 
Mildew  | 
Black Rot  | 
Excoriose | 
Botrytis  | 
| A - Winter bud | 
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| B - Cotton bud | 
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| C - Green tip | 
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| D - Leaving the leaves | 
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| E - Spread leaves | 
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| F - Visible clusters | 
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| G - Separate bunches | 
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| H - Separate flower buds | 
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| I - Flowering | 
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| J - Fruit set | 
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| K - Green peas | 
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| L - Closed bunches | 
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| M - Veraison | 
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| N - Maturity | 
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| O - Aoûtement | 
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| P - Falling leaves | 
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|   | 
= Significant manifestation of symptoms | 
|                     | 
= Moderate manifestation of symptoms | 
Periods of onset of symptoms in clusters of major fungal diseases 
|  Phenological stages  | 
Powdery mildew  | 
Mildew  | 
Black Rot  | 
Excoriate  | 
Botrytis  | 
| A - Winter bud | 
  | 
  | 
  | 
  | 
  | 
| B - Cotton bud | 
  | 
  | 
  | 
  | 
  | 
| C - Green tip | 
  | 
  | 
  | 
  | 
  | 
| D - Leaving the leaves | 
  | 
  | 
  | 
  | 
  | 
| E - Spread leaves | 
  | 
  | 
  | 
  | 
  | 
| F - Visible clusters | 
  | 
  | 
  | 
  | 
  | 
| G - Separate bunches | 
  | 
  | 
  | 
  | 
  | 
| H - Separate flower buds | 
  | 
  | 
  | 
  | 
  | 
| I - Flowering | 
  | 
  | 
  | 
  | 
  | 
| J - Fruit set | 
  | 
  | 
  | 
  | 
  | 
| K - Green peas | 
  | 
  | 
  | 
  | 
  | 
| L - Closed bunches | 
  | 
  | 
  | 
  | 
  | 
| M - Veraison | 
  | 
  | 
  | 
  | 
  | 
| N - Maturity | 
  | 
  | 
  | 
  | 
  | 
| O - Aoûtement | 
  | 
  | 
  | 
  | 
  | 
| P - Falling leaves | 
  | 
  | 
  | 
  | 
  | 
|   | 
= Significant manifestation of symptoms | 
|                     | 
= Moderate manifestation of symptoms |