Powdery mildew - symptoms, prevention, treatment

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disease many vegetable crops.Caused by a fungus.It manifested in the form of a powdery, white coating.Leaves affected by this fungus, curl up and fall off.The plant withers and dies very soon.Manifested mildew throughout the garden season, "flourishing" in a month after germination.The reasons for the emergence of the fungus on the leaves are too close planting, the soil is poor, scanty watering, extreme changes in temperature day against the night (hot-cold).

Powdery mildew present.The main symptom - plaque appearance described above not only leaves but also on the stems and even flowers.The disease is rapidly weakening the plant.The leaves curl up, but do not fall for a long time.The reason for this close planting and watering scarce.Example - gooseberry mildew on: twisted leaves stop growing, dry, broken;berries, not vyzrev, crumble.As a result - the lack of harvest and the death of the plant within a year or two.

Powdery mildew false.The main symptom - the emergence of "faded" or yellow-brown spots on top of the sheet is shown below grayish mold.The plant is weakened, it becomes ugly.The appearance of the fruit is possible, but their quality is low, with different strains.An example is the powdery mildew of cucumber.The main cause of this fungus on the plant is in the nighttime low and high daytime temperatures.

Treatment of affected plants is possible, but it is better to focus on prevention.Avoid close planting, choose a windy place, provide regular watering, buy varieties of plants that are resistant to the fungus.Removal of infected shoots and leaves are burned.The soil between the rows and dig around the bushes, followed by a moderate dressing fertilizer (potassium and phosphorus-nitrogen).

good result spraying plants with a weak solution of soda ash (0.5%) with the addition of a conventional soap.Sprinkle a few times: before flowering, immediately after, before the harvest (for ten days) and once again in two weeks.

If mildew has already proved itself, treat the affected plants (first remove the infected areas (leaves and even twigs), a fungicide. Means chemical, so compliance proportions and the use of protective equipment (gloves, masks) are required. The instructions you can read on the packaging.

positively affects the use of the drug "Topaz". Requires dual processing, but it is enough to only one (after flowering)

Another drug, claiming to be a substitute for Bordeaux mixture - "HOME". The bushes sprayed before flowering, according to instructions.

Inpeople spread "home treatment": bar softened soap and 20 g vitriol bred in a bucket of water (10 liters). Filtered solution matte-blue treated plants immediately after flowering.

can process a solution of soap (50 g) and soda(50 g) dissolved in a bucket of water. The bushes are watered from a watering can with a fine strainer before blooming leaves (on a bush - three liters of solution) and after flowering.

Another, not too time-consuming method requires 3 kg of ash and a bucket of boiling water (ash poured boiling water).Infusion of ash plants sprayed before flowering, and then after it (the interval of about ten days).

course, once all the recipes should not be used - it will be overkill, it can only exacerbate the situation.It is better to choose a more appropriate method.Usually, it is missing two treatments per year.Especially if planting (or seeding) you choose varieties that are resistant to powdery mildew.

And another important point: the new, newly acquired plants, must be decontaminated.The ideal tool for this purpose will provide a 1% copper sulfate.Seeds are kept in this solution for 5 minutes, washed with water and then planted.