Pest & Disease Control for your Crop
Late blight
Potato
Symptoms
- It affects leaves, stems and tubers.
- Water soaked spots appear on leaves, increase in size, turn purple brown and finally black colour.
- White growth develops on under surface of leaves.
- In tubers, purplish brown spots and spread to the entire surface on cutting, the affected tuber show rusty brown necrosis spreading from surface to the center.
Preventive Measures
Grow resistant variety like Kufrianand, kufribadshah, kufri khyati.
Seed Treatment
Or
Control Measures
Mix in 200 liters of water and spray.
Or
Mix in 200 liters of water and spray.
Or
Mix in 200 liters of water and spray.
Or
Description
- The disease starts to develop as soon as the favorable conditions occurs.
- The primary source of infection is infected tuber seeds and the congenial climatic conditions are temperature range of 16-22°C with >80% RH.
- The average annual losses due to late blight have been estimated to 15% of total production in the country.
- Normally susceptible cultivars are killed within 8 to 10 days of the disease appearance but it takes longer time (10 to 15 days) in resistant cultivars.