It doesn’t matter when the onion was planted – in winter or at the beginning of May – it is equally susceptible to downy mildew or peronosporosis..
How to understand that the disease has visited your beds? The most obvious sign is a gray coating on the onion leaves..
As a rule, the disease develops under unfavorable weather conditions, namely in the rain, as well as in areas where no one is treating the disease.
As a result, the bulb of the affected plants dries out, which, firstly, causes problems with storing the harvest, and secondly, the vegetables become unsuitable for consumption.
How to prevent the development of downy mildew
An effective prevention of downy mildew is the treatment of onions with biological preparations – for example, based on hay bacillus.
Not only onions are at risk, but also cucumbers, zucchini and pumpkin.
How to deal with downy mildew
If the disease has already manifested itself, summer residents advise using products created on the basis of sulfur. One of such preparations is ‘PFK-Leros’. To prepare a solution for treatment, you will need 40 ml of the preparation and 10 liters of water.
Earlier we told how experienced summer residents use celandine to combat pests and diseases.
