Diseases Information - Potato

Potato Scab

Favorable weather

Infestation period

Temp 15-25°C;

RH 70-90%

December- February
Late Blight
Favorable weather Temperature 16-20°C.  Cold and humid weather is congenial for spreading the disease. Low night temperature and high humidity associated with drizzling, fog and accumulation of dew on leaves. If this situation occurs, the disease becomes epidemic.
Control measure Common name and dose Trade name
Spray of Mancozeb @2gm/L water. Dithane M 45/Indofil M 45/Haymancozeb 80 WP/ Mcozeb 80 WP
Infestation stage Seedling to Maturity stage.

 
Fusarium wilt
Favorable weather High Night Temperature ( 28-30°C)  and Relative Humidity(RH)  80-90%.
Control measure Common name and dose Trade name
Spray  of Carbendazim @1gm/L water  2-3  times with   7-10 days interval Bavistin Wp, Bendazim 50 WP, Haydazim 50 WP.
Infestation stage Seedling to Vegetative growth stage.

 
Bacterial wilt
Favorable weather High Night   Temperature ( 28-30°C)  and Relative Humidity (RH)  80-90%.
Control measure Apply stable bleaching powder (SBP)@ 25-30 kg/ha before final  ploughing .
Infestation stage Seedling to Vegetative growth stage.

 
Potato Leaf Roll Virus
Favorable weather  Average temperature 18-20°C and Relative humidity(RH) 70% (for vector)
Control measure Common name and dose Trade name
Spray of Imidacloprid  0.5 ml/L of  water or Melathion 2 ml/L water with 15 day intervel for controlling vector. Admire/ Fyfanon 57 EC
Infestation stage

Seedling to Tuber bulking/

development stage.