False powdery mildew
Over the past 2-3 decades, the most terrible scourge of gardeners is a very dangerous disease of cucumbers, which has been called false powdery mildew. It is characteristic that the disease can affect cucumber plants at various stages of their development, even starting with seedlings, but, as a rule, the gardener should know that the infection of this disease can remain on the soil for up to 6-7 years. Characteristic signs of this disease are that at first oily spots of a green hue appear on the leaves of cucumbers, in a ten-day period they increase in size, then the leaves change color and turn brown and dry up within 2-3 days. It creates an impression. that the plant received a chemical burn. In this regard, there are a number of opinions among the people that this is the result of acid precipitation, various emissions from chemical plants, nuclear power plants, etc. But these conclusions and assumptions are somewhat untrue.False powdery mildew or peronosporosis is a fungal disease of plants. For reference: until the 80s of the last century, no one in central Russia knew about the existence of such a disease, this infection came to us from the Far East, and unfortunately peronosporosis firmly and forever settled in our latitudes. Like all mushrooms, false powdery mildew is spread by spores. Each spore of peronosporosis has tentacles that ensure its movement and, accordingly, distribution, only in a humid environment. From this it follows that the presence of moisture on the leaves and stem of the plant provoke outbreaks of the disease with false powdery mildew. We live in a temperate continental climate zone, which is characterized by the fact that the air temperature in summer can range from +25 degrees. in the afternoon up to +10-15 degrees. at night. This temperature drop causes abundant condensation from the air, and therefore the plants are in a moist state, which contributes to the intensive spread of peronosporosis spores. Excessive humidity can cause watering cucumbers with cold water in hot weather, as well as moisture that collects on the surface of the greenhouse or greenhouse film. In order to localize and prevent the spread of false powdery mildew as much as possible, it is necessary to take into account the above reasons.Now about how to treat plants with peronosporosis. By the way, besides cucumbers, zucchini and pumpkin are susceptible to the disease of false powdery mildew. If you notice the first signs of the disease by the characteristic spots on the leaves, it is necessary to stop watering and fertilizing cucumbers and not produce them for a week. Plants must be treated with a solution of copper chloride, while not forgetting that the temperature of the solution should not be low, but should be about + 25 degrees. After that, for several days we should try not to allow the temperature to decrease, especially at night. To do this, you can additionally cover the plants with a film or other material at night.If the plant is still dead, it must be burned, and the bed treated with a solution of copper sulfate. In order to prepare the solution, it is necessary to add 3 tablespoons of copper sulfate in 10 liters of water and stir thoroughly. It is also necessary to keep in mind that in the next gardening season it is not recommended to plant cucumbers on which cucumbers, zucchini or squash grew before. Real free porn movies https://exporntoons.net online porn USA, UK, AU, Europe.