Disease management :
Fruit Rot - (Phytophthora nicotianae var parasitica Dastur)
Symptoms:
The infection starts as circular
brownish spots at styler end as well as on the fruits. Whitish
cottony growth develops very fast as the fruits ripens and cover
almost the entire surface with in a period of about 3-4 days
during humid weather. Peduncle and fruits become soft and the
colour of the fruit changes from light brown to dark brown,
emitting a characteristic unpleasant odour. Incipient infection
on fruits leads to rotting during storage.
Epidemiology: High relative humidity > 70% and temperature in the range of 20-27.5 °C are very conducive for the disease. The rain fall spread over a period is more congenial than the total amount of rains for the disease progression
Management:
The disease can be effectively controlled through the sprays of
Al phosphonate (Aliette 0.2%) + Indofil Dithane M-45 (0.2%) or
Phosphonic acid (Phytoalexin (0.3%) or Akomin (0.3%) when spryed
at fortnightly intervals. The removal and detruction of diseased
fruit is the foremost important.