How can I prevent potato blight?
Posted by Dobies Staff on 23 January 2015 01:24 pm

In a dry summer potato blight causes little or no damage but during warm, moist, humid spells it spreads rapidly from plant to plant. Blight first appears on the leaves as brown or blackish patches. During wet or damp weather the spores are washed down into the soil and the tubers quickly become infected.

If blight appears late in the season and the growth of the crop is nearly complete then remove the foliage and leave the tubers in the ground to allow them to mature.

Crops that are well earthed up are less likely to suffer from blight than those where the tubers are near the surface. Spraying with Bayer's Fruit and Vegetable Disease will help to reduce the risk of attack.

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