
Potato blight
What you will see
Watery brown, collapsing leaves with a fine white growth on the undersides; tubers rot.
The source says: it is the most serious disease of potatoes.
When to look
From early summerHow to protect
- Prevention
- Earth up potatoes well; the tubers are then protected from spores washed into the soil.
- Early varieties often escape the disease, but they are not immune.
- Rotate crops (at least 4 years) and do not grow tomatoes in that soil during that time either — they suffer from the same blight.
- By hand when symptoms appearOnce about 25% of the leaves are affected or the stems show lesions, cut the haulm off 5 cm above the ground and lift the tubers two weeks later. Dispose of the debris; do not compost it.
























