Cause
Erysiphe heraclei, a fungus. It can be found on fall-planted carrots and overwinters on the carrot seed crop. Another host plant is wild carrot. Some cultivars, like Nantes and Imperator, appear more susceptible to the disease. Severe infection results in low yields and poor seed quality.
Symptoms
The disease affects the foliage, stems, and umbels. Patches of the white felt-like fungus appear on lower leaves first, and then spread to the terminal growth. The fungus often covers entire leaves with its masses of white mycelium and powdery spores. Infected foliage becomes brittle and may eventually turn brown, shrivel, and die. Diseased pedicels may turn brown, resulting in the florets’ premature death.
Cultural control
- Isolate new carrot fields from established infected fields.
REMEDIES
FOR
POWDERY MILDEW
It is difficult to fight powdery mildew.
But it is not impossible.
To prevent plants from powdery mildew, controlling and getting ridpowdery mildew. You can prepare own special organic liquid mixture forpowdery mildew yourself, both economically and so effective.
To prepare this special organic liquid mixture, You need some ingredients that you can find your country easily, formulation and production process. You need no help and no technıcal support to make this mixture. simple mixing is sufficient.
Below textbook has a formulation and manufacturing process of special organic liquid mixture and methods of application to treat powdery mildew. You can produce special organic liquid mixture for powdery mildew easily and apply to plants safety.
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