Medvedka - earthen cancer
Many gardeners may sooner or later have the question: “What kind of round holes are in the beds?” And why did the seedlings begin to die? And how to protect crops from these phenomena? ” By digging these holes, you will see a bunch of small eggs there. "What is it?" - you ask. Medvedka, or, as the people say, is earthen cancer, which causes irreparable harm to summer residents. Let's find out what this insect is.
Medvedka, latin name - Gryllotalpa. Orthoptera insect genus. Type view - Common bear (Gryllotalpa gryllotalpa) The popular name is kapustyanka (kapustyanka). It is found in the CIS in the European part, with the exception of some northern and northeastern regions.
Medvedka - a large insect, body length (without mustache and tserkov) up to 5 centimeters. The abdomen is about 3 times larger than the cephalothorax, soft, spindle-shaped, with a diameter of about 1 cm in adults. At the end of the abdomen are paired filiform appendages - cerci, up to 1 cm long. The chest carapace is solid, its structure is such that the head can partially be removed under his defense. Two large complex eyes, a long antennae and two pairs of tentacles framing a gnawing mouth apparatus are clearly visible on the head. The front pair of limbs in the bear is modified in comparison with the other two, being an excellent tool for digging the earth. In adults, the wings in the folded state look like two long thin scales, often exceeding the length of the abdomen. Body color: the abdomen is dark brown on the upper side, brightening to olive to the bottom, the same color of the limb. Head and chest are dark brown.
The insect leads mainly an underground lifestyle, but flies well, runs on the ground and swims. It is rarely selected on the surface, mainly at night. A little bear hibernates in the ground at a depth of 2 meters or more, or in compost heaps.
It feeds mainly on underground animals: insects, worms, etc. But, in general, it is omnivorous.
Medvedka, breaking through passages in the soil, improves its aeration. However, it can be a pest on agricultural land, because it often bites the roots of cultivated plants when tunneling. Thus, the ratio of harm and benefit from the bear is determined by their number on the site.
Given the excellent adaptability of the bear, it should be noted that most often they act as a pest, as they multiply quickly and in large quantities.
At the end of September, it is necessary to dig holes up to 0.5 m deep, fill them with manure (preferably horse) with straw. Pest gathers in pits. Late in the fall or winter, they are dug up, manure is scattered and insects die from the cold. The bear can be caught in half-liter jars filled with 2/3 of water, dug into the soil at the surface level in places of mass accumulation of insects. At the beginning of the growing season (at the end of May and during June), rows are loosened 2-3 times to a depth of 10-15 cm, dug eggs and larvae die.
When planting vegetable seedlings (tomatoes, peppers, eggplant, etc.), 1-1.5-liter plastic bottles can be used. The upper and lower parts are cut, the rest is cut into several parts up to 10-15 cm high. Then these parts are placed in the ground so that at least 5 cm remains above the surface where the seedlings are planted.
You can lay out bait from fresh manure at the beginning of May, into which the pest crawls into the holes and lay eggs, and after 3-4 weeks they look at the bait hen, destroy the bear and eggs.
The pest also dies from eating baits from egg shell powder moistened with sunflower oil, which is embedded in the ground. Plants are not damaged if you put a clove of garlic in the hole before planting.
In autumn, you can use a mixture of water with kerosene (100 g per 10 liters of water), which is poured into the pest holes at a rate of 30 g each.
Bears do not like the smell of calendula, garlic, parsley, fresh alder leaves.
Trap. It is necessary to make a tin box measuring 10x30x15 cm, dig it into the ground so that the top edge is level with the upper horizon of the soil. The box should be covered with a large mesh of wire, a perforated rag, gauze or other similar material and sprinkled with earth. At the bottom of the box, you can put, moistening, a thin layer of earth, humus.
As a trap, you can use a glass jar, lubricated from the inside with a neck of honey. The jar is dug into the ground, the neck is closed with a board with a gap of 1-1.5 cm. After some time, the jar is removed and the insects crawling into it are destroyed.
A solution of 1 tablespoon of kerosene or 2 tablespoons of washing powder per 10 liters of water can be poured into minks. Bear in 1-2 minutes crawls out of the mink.
In household plots, preparations are used, which are a food bait treated with diazinon. Such a bait is dug into the soil at a shallow depth. When choosing places for layout, preference is given to moist and warm areas rich in organic fertilizers, where the pest is more often concentrated. To increase the attractiveness, the bait is moistened with a small amount of vegetable oil.
One of the most popular remedies for the bear is Medvetox. The product has an attractive smell and taste for insects, and retains its effect for more than a month, without disintegrating even during watering. Eating it, the bear dies.
Another drug with a similar effect - “Grizzly bear” kills not only adults, but also larvae.
A few more drugs: Thunder, Phenaxin Plus, Bankol.
The Bears have many natural enemies. In addition to birds feeding on insects (these are starlings and rooks), the pest is destroyed by moles and shrews. The most effective method is the use of biological pesticides made on the basis of the natural enemies of the pest: fungi, nematodes and ectoparasites.
One of the most effective biological products is called "Boverin." Its active substance is spores of entomopathogenic (parasitic, insect infecting) fungi. They cause a fatal disease in the bear. As for humans, bees, birds, warm-blooded animals, then for them it is harmless.
How do you deal with this pest? We are waiting for your comments!