Folletage

• Symptoms

This physiological disease manifests itself in spring, generally in Mediterranean regions and on growing vegetation. When the drying wind succeeds a rain, this causes a more or less important drying out of the foliage of the vine.

• Explanatory factors  
  • A tall vine, young and vigorous, with a superficial root system;
  • A rootstock promoting the expression of this disease (161-49C, SO4).

•  Preventive measures
  • Pinch the end of the twigs to limit evapotranspiration when conditions favorable to folletage appear.