Wireworm - This is the larva of the click beetle, which can be easily distinguished from all other larvae by its rigid, wire-like body with shiny integuments. Potato wireworm causes damage to potato tubers comparable to that of the Colorado potato beetle.
But the presence of the beetle can be easily detected and immediately taken measures to destroy it, while the wireworm conducts its destructive activity underground, it is much more difficult to detect it and, accordingly, it is more difficult to fight it.
What does the wireworm eat? Wireworms are polyphagous. They destroy seeds, seedlings, roots and even plant stems. Wireworms drill tubers and root crops, eating out passages in them and making them practically unsuitable for storage and consumption.
What does a wireworm look like? In length, the wireworm reaches from 10 to 50 mm. These larvae have a thin and hard body, the color of which ranges from dark brown to yellow. It is almost impossible to crush a wireworm. The developmental cycle of the nutcracker lasts 5 years, the wireworm larva develops for 3-4 years. In the first year, the larva feeds on the underground part of the plant, but does not cause significant damage to it. Wireworms become a dangerous pest in the second year of life, and in the fourth year the larva pupates, and in the spring an adult click beetle appears from the pupa.
If other insects can be easily dealt with with insecticidal or acaricidal preparations, then fighting a wireworm will have to tinker with. How to kill a wireworm? The wireworm lives in the soil, and it is not easy to get to it. The fight against the wireworm on the site should be carried out by all possible measures in a complex, that is, using agrotechnical, mechanical and chemical methods.
Agrotechnical measures against wireworm include:
The wireworm's appetite can be spoiled by 3-4 superphosphate granules, treated with an insecticide, laid out in each well. For processing, wireworm preparations such as Actellik, Karate or Decis are used. Superphosphate is scattered in a thin layer and the granules are sprayed with a solution prepared according to the following recipe: Actellic (or other insecticide) - 15 ml, water - 80 ml, acetone - 200 ml.
When the number of wireworms cannot be regulated in any other way, it is necessary to resort to the use of the highly toxic drug Bazudin or Diazinon, which is slightly less dangerous for warm-blooded people. The drug Prestige from the wireworm and the Colorado potato beetle also reduces the number of pests by more than half, moreover, it is not as harmful as Bazudin. Wireworm provotox is not addictive to the pest, has low toxicity to humans, is harmless to earthworms and has a long duration of action.
In addition to the listed chemicals, wireworm control agents such as Grom-2, Kapkan, Zemlin, Aktara, Force, Metarizin and Dohlox are used. But whatever insecticide you choose, you can use it only in strict accordance with the instructions.
Since the use of chemicals in pest control can harm human health, it is advisable to resort to them as little as possible. It is better to use time-tested folk remedies for wireworm. The fight against the wireworm on the site is carried out by the following methods:
To get rid of the wireworm forever, you need not only to destroy it, but also to carry out annual preventive measures that will no longer allow it to appear on your site. These activities include:
Well, advice to those who have just begun to cultivate a plot of land: there are many wireworms in the virgin lands, so in the first years, until you select all the larvae and all the roots of weeds from the ground, it is better not to grow potatoes and root crops on the plot. Plant legumes, nightshades, or pumpkin crops for now.
If the issue with the number of nutcracker larvae on the potato site has become very acute, you need to get rid of the pest by all available means.
How to get rid of the wireworm on potatoes? We have described how to protect the garden from the appearance of a nutcracker on it with preventive measures, but if a wireworm nevertheless appeared on a potato field and began to spoil the tubers, immediately start laying out baits and traps around the site: put pieces of carrots and beets in a shallow hole and what Cover the trap. You can dig a half-liter jar with pieces of root vegetables into the ground, one for each m² of the plot, and cover them. After 2-3 days, remove the jars from the ground and destroy the larvae gathered in them.
Prepare an infusion of nettle, celandine, dandelion or coltsfoot according to the following recipe: take 100 g of celandine, coltsfoot and dandelion 200 g each, nettle 500 g - pour 10 liters of water and insist for 12 hours (celandine insist 3 days), after which the infusion is filtered and poured over the soil on the site.
In order that you do not have to fight an invisible pest, do not grow potatoes on the site for more than 2 years, alternate it with legumes, and treat the tubers with a solution of the active substance Prestige before planting, which will protect the potatoes not only from the wireworm, but also from the bear, crumbling and the Colorado potato beetle. And do not forget to carry out annual preventive measures that protect the garden from the wireworm more reliably than the most powerful drugs.
Wireworm infects many root crops, including carrots, however, it is undesirable to use toxic chemicals in the fight against the pest because of their ability to accumulate in root crops. It is difficult to do without insecticides in industrial areas, but in a private garden it is quite possible to cope with nutcracker larvae with non-toxic folk remedies. How to get rid of the wireworm in carrots? The following tricks can help you:
How to deal with wireworm in areas with other crops? The same as in a potato field or carrot beds.
Most of the crops that grow in the garden are more or less exposed to the invasion of pests. The potato crop can be ruined by an insect such as a wireworm. Many people mistake it for a worm, but it is the larva of a click beetle. If a pest gnaws a potato, it is no longer suitable for storage.
Click beetles are found almost everywhere. In the spring they lay eggs, from which the larva emerges. It is she who causes irreparable harm to the potato crop. There is practically no soil that is not contaminated with wireworm. It is very important to control the population of insects in the garden and use all possible effective methods to combat them. The process of destroying the wireworm is quite long. It is almost impossible to do this in one go.
Pests can appear in the area where carrots are planted in several ways. Some types of pests appear as a result of improper agricultural practices, also associated with violation of the rules of crop rotation. Some types of insects simply fly from plantings of some vegetable crops to others, if there is no constant struggle with them. Prevention measures play an important role.
Wireworms do not like these plants, therefore, by correctly distributing various crops on the site, you can insure yourself against the appearance of pests in the ground.
It is easier to take measures so that this pest does not appear on the site, than then make every effort to get rid of it, wasting precious time on making some kind of traps. To avoid the appearance of a wireworm on the site, you must:
In the war against the parasite, it is important to observe the correctness and sequence of the following actions.
It is necessary to liming the acidic soil. In moist soil, a high subacidity (acidity) is often revealed. It is determined without any analysis, relying on the presence of indicator plants in the garden:
It is recommended to add chalk, dolomite flour or wood ash to the soil, both on the surface of the soil, and specifically in the holes for planting.
In this way, you can get rid of the wireworm from April to October. Gardeners came up with several types of traps:
It is important to dig the site 2 times a year - in late autumn and early spring. Kill all weeds, especially wheatgrass, as it is a favorite food for wireworms. After digging from the soil, select all its roots. If beetles, pupae and insect larvae are found, they should be destroyed.
Insecticidal drugs are used in extreme cases. Nitrogen-containing fertilizers are used more often. Carrying out their main function of improving the fertility of the earth, they simultaneously drive away the wireworm. These drugs include:
The drugs are injected into the soil, and the pests smell ammonia, which is unpleasant to them.
There are also special preparations for combating wireworms on sale:
Also, highly toxic potent drugs include:
Chemicals are dosed into the potato groove, as indicated in the instructions for use. After some time, they dissolve, and a protective contour is formed on all sides of the plant.
Homemade wireworm disposal methods are more gentle on the soil and vegetables.
The pest does not like this plant. The mustard from the wireworm must be sown closer to autumn, so that it has time to grow at least 10 cm. Then it is cut and dug up with the soil so that the stems and roots are in the soil. In the spring, you need to repeat all the steps, and also bury the mustard. In the process of stem rotting, bitter essential oils are released, which repel the pest.
An effective herbal decoction against wireworm includes:
Pour the specified number of plants with a bucket of boiling water and leave to infuse for 2 days, then treat the soil with it.
Pour wood ash 1-5 centimeters thick between the rows of potatoes. This neutralizes the acidity of the soil.
For sowing potatoes, first make a solution of potassium permanganate (2 g per 10 l). Fill in the area where the ridge will be located. Water abundantly so that a layer of soil 15-25 cm thick is saturated with moisture. Also, the solution is used when planting potatoes - 5 liters of liquid per 1 sq. m area.
The wireworm does not live where such plants grow:
It is recommended to grow these crops on the site for 2-3 years. The larvae of the wireworm beetle die, and the nutcracker itself leaves for places more suitable for its existence.
In the autumn, for digging the soil, it is advised to add 1 liter of wood ash for each square meter of potato plot. When digging the soil, the larvae, by the way, can be partially removed.
It is also useful to add ammonium sulfate to the soil in the fall in the amount of 2 tbsp. spoons per square meter. Ammonium sulfate kills the larvae plus enriches the earth with nitrogen.
Green manure helps to improve the soil, get rid of weeds and pests. For potatoes, mustard is an excellent green manure. We ourselves have been sowing mustard on the potato plot for several years now and are very satisfied! If a in the fall, after the potatoes, plant mustard, by the spring the soil becomes looser, there are much less weeds, and the question is, how to deal with a wireworm on potatoes, ceases to be relevant. Checked! We have described our experience here.
Chemicals. After harvesting, before digging the site, granular insecticides are introduced into the soil. You can combine pesticides with fertilizers. To do this, superphosphate is distributed in a thin layer on a flat surface covered with a film and sprayed with pesticides ("Karate" or "Decis"), dissolved in water (80 ml) with acetone (200 ml). Dried granules are brought in for digging. If for some reason this could not be done, the granules treated in this way can be added to each well in 5 g at the time of planting the potatoes.
It is quite difficult to get the clicker beetle out of the garden, but you need to fight the wireworm on the potatoes without delay. It is practically impossible to exterminate every single bug. But you can significantly reduce their number. The very first thing you can do is various traps.
These disposal methods are fairly simple to perform:
It is not enough when such remedies help, but it is still necessary to try before starting with drastic measures.
Folk remedies do not always help in the fight against a whole family of beetles, but they can be used as a prophylaxis to protect the field from the invasion of parasites.
This method is dangerous for humans, as it is poison. Preparations must be diluted strictly as directed in the instructions. These include:
When using Prestige, it is important to observe safety measures. Despite the high price, gardeners take it very well, because it really works and helps to quickly destroy the wireworm. It is necessary to dilute the contents with water in the same amount as indicated on the package, and thus spray the plants. For a better result, place the tubers in the solution and wait a while, then they are planted in the ground.
Provotox is a proven product, produced in the form of friable granules. You need to do this: pour poison over the beds and wait for the result from 12 hours to 3 days. The drug gets inside the insect, affects its nervous system and paralysis occurs.
Nemabact is completely harmless to humans and animals. Safe for tops when sowing. Once inside the beetle, the poison completely destroys it from the inside. You cannot dilute the solution in advance. Protect your eyes while working.
All drugs are similar to each other, they act destructively on the insect. But it should be remembered that you do not need to abuse them, since wireworms become resistant even to the most powerful pesticides.
The click beetle is the worst enemy of plants that bear fruit. Every gardener should know the most basic measures for the prevention and elimination of these pests. If you regularly and persistently take care of the vegetation, follow all the rules, you can not only reduce the number of voracious beetles, but also get rid of them completely.