Internal sprouting

• Description

After several months’ storage at a temperature above 6°C, the flesh of some tubers may have internal sprouts (photos 1 and 2). This anomaly is due to the sprouting inhibitor (CIPC) which is inefficient when applied to tubers close to the dormancy break.

This may happen with an under-dosage of the quantity of active ingredient or when the second treatment has been applied too late.

This risk is clearly increased when, simultaneously, the storage temperature is not properly regulated and/or is abnormally high.

Excessive tuber incubation may also cause the same anomaly.

• Control measures
  

The right doses should be applied with each sprouting-inhibitor treatment. This should be applied by thermofogging, at regular intervals using the recommended quantities and according to the effectiveness of the previous treatment.