2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
In late spring - early summer, many regions of Russia are faced with the phenomenon of hail. It belongs to the class of dangerous and is always recorded by storm telegrams from the meteorological service. How does this precipitation occur? How can they damage our crops? We will try to consider these issues in more detail
This year we had hail on June 9, along with heavy rain. The size of the crystals was 0.5 cm. Their rounded shape is clearly seen in the photo. The phenomenon lasted about 10 minutes. Then it turned into regular rain. I was just in the garden. I was lucky to record this phenomenon with a camera.
What is hail?
Hail is the name given to opaque ice crystals of a round or irregular shape. Their size ranges from a few millimeters to tens of centimeters. In the entire history of mankind, the largest hailstone weighed about 1 kg and its size was 13 cm. Most often, they do not exceed 1-2 cm.
Large dimensions are inherent in precipitation falling in temperate latitudes, near the coastal zone of the seas, in the foothills. In Central Russia, they do not have time to grow to such a threatening size.
How are hailstones formed?
Hail is always formed in the hot season during the day at a temperature of at least 25 degrees and a wind force of more than 10 m / s. Drops from huge dark gray cumulonimbus clouds with ragged white tops. The phenomenon is accompanied by thunderstorms, showers.
The cloud is a multilayer cake, the lower part of which is close to the earth's surface, and the upper part at an altitude exceeding 5 km. In the interval between these layers, hail forms.
Glowing in hot weather, with strong ascending currents, the evaporation of moisture from the earth's surface rushes upward. Particles of dust, sand, soil are captured together with water. They are the center of the core, around which moisture freezes at high altitudes at negative temperatures.
During movement in the upper layers, hailstones can repeatedly lower and rise. Each time a new layer of ice is added. Their size is increasing. Having reached the critical mass, the particles rush to the ground, falling out in the form of crystalline precipitation.
If desired, you can determine how many times a speck of dust has risen. To do this, you need to cut the hail. Each layer is represented by a separate scale, like an onion.
The thicker the cloud layer and the higher the downdraft velocity, the greater the likelihood of ice precipitation increases. Otherwise, they do not reach the ground and melt in the air.
Elemental damage
Once in the last 20 years, at the beginning of June, we got hail from a pigeon's egg. Then the planting of onions suffered (the feather turned into a washcloth), broke through the leaves of cabbage, broke off the tomatoes. Some residents had their windows broken in village houses.
After 2 weeks, the plants regained their growth. Stepchildren went on tomatoes. The growing point on the onion remained, so new shoots appeared. On the cabbage, only the outer leaves were affected, the coverts did not have time to grow. Normal plugs were tied. The harvest of all crops has declined, but a complete loss has been avoided.
In this case, shelters made of film and non-woven material on heat-loving crops (tomatoes, peppers, eggplants, cucumbers) help well. Shared use protects plantings from hail. The film creates a humid and warm microclimate. Spunbond shades from the direct rays of the scorching sun.
Hail fighting
In the old days, people noticed this pattern. Loud sound reduces the likelihood of ice precipitation. When the storm was coming, bells were rung or cannons were fired with blank shells.
Nowadays, in order to reduce the destructive effects of hail, a reagent based on silver iodide is used. It is sprayed over a cloud. In this case, many crystals are formed, but of a smaller size. Most often, they manage to melt in the air during movement without causing significant damage.
When ice falls, do not panic. Plants have the ability to regenerate. In most cases, complete crop loss is avoided.
Recommended:
Dangerous Pest Of Strawberries - Strawberry Mite
Strawberries are a delicious, healthy berry in our garden, loved by everyone from children to adults. Everyone knows what large-fruited garden strawberry looks like, he has tasted it many times. But for the most part, people do not suspect that this berry has many pests. The most dangerous is the strawberry mite, which destroys the harvest up to 80%
Why Is The May Beetle Dangerous?
Meeting the May beetle causes joy in children and fear in gardeners. This gluttonous pest is capable of causing irreparable damage to the garden and garden. It is useful to know which plants the flight of the May beetle is dangerous to, and how to deal with colonies of larvae
What Plant Residues Can Be Dangerous?
Not all plant residues can pose a certain danger to crops grown on the site, but there are still some that must be immediately destroyed. Plant residues are fallen leaves, and branches cut from trees or shrubs, and vegetables not removed from the beds, and vegetable tops, and spoiled fruits or carrion, and, by the way, this is not a complete list of what can be safely ranked to plant residues! And if some
Plants That Are Dangerous To Pets
Some owners of dogs, cats and other pets believe that their pets are instinctively able to distinguish between healthy foods or edible plants from harmful ones. If this were so, then our four-legged friends would not end up in veterinary clinics with such a serious diagnosis as poisoning. After such a blow to health, it can be very difficult to literally put the animal on its feet. And often the reason for such a state of a pet is the person's ignorance of
Dangerous Rootworm Nematode
Gallic, or root, nematode is very harmful to the roots of growing crops. On the roots attacked by pests, galls are gradually formed - it is this feature that has determined the name of the harmful parasites. All the thickenings formed on the roots are initially painted in yellow tones, but after some time they turn brown. The development of root-knot nematodes takes about a month, and each of them is capable of producing up to six generations a year. If you don't fight these dangerous
