To combat Colorado beetles, you need to be able to choose the right drug. If a folk remedy does not give positive results, you cannot do without insecticides. These chemicals kill larvae and adults. They are divided into different groups: biological and pyrethroid, regulators of growth and development of insects. To exterminate pests, it is necessary to follow the dosage and carry out the treatment according to the instructions.
You need to start spraying after the larvae appear on the bushes. If at each planting their number exceeds 15 pieces, you should hurry up and start processing.
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Biological insecticides to control the Colorado potato beetle
Biological insecticides do not pose a threat to human health and do not accumulate in the plant. After the larva eats the leaf soaked in liquid, it will lose its appetite and soon die. This will keep the vegetables clean. Within a week they can be eaten. Insecticides of biological origin do not destroy egg clutches, therefore, the procedure should be carried out once every 7 days three times per season.
Rain and watering will reduce the effectiveness of the preparations, so treat the plants on a clear and dry day.
Biologicals are presented in the table.
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Pyrethroid insecticides to control the Colorado potato beetle
The Colorado potato beetle is a pest that is more difficult to control due to the fact that it can develop resistance to biological drugs. If you cannot expel it in any way, you need to use more aggressive formulations in the form of pyrethroid insecticides. Their composition and action are as close as possible to natural substances that are secreted by plants in order to resist pests.
Means of such a plan are considered less toxic than other types of insecticides. However, they have one significant drawback - at a temperature of 23 ° C, they lose their effectiveness.
Important! If you use one type of pesticide, the pest can develop immunity the next year, so you will have to change the formulations. In addition, it is recommended to follow the rules of crop rotation and treat the tubers with protective compounds before planting.
Next, a brief description of the drugs that you can use on your site will be posted.
We use live plants
The Colorado potato beetle does not tolerate the aromas of some flowers and plants. This can be used to combat it. For example, islands of fragrant flowers can be planted in the middle of potato plantations. The pest will fly around the side of the potato if it hears the aroma:
- marigolds;
- calendula;
- nasturtium;
- coriander;
- cucumber herb;
- night violets.
But leaf-gnawing beetles are not only afraid of flower bouquets. Garlic, onions, vegetable beans, beans, horseradish - all these plants repel this pest and preserve potatoes.
"Fury"
Less effective remedy. Does not pose a threat to health. Fury water emulsion is packaged in canisters (5 l) and bottles (10 ml). For 100 square meters, 0.7 liters of the drug will be required. Spraying with a solution is necessary every 10-15 days. Can be used for a variety of crops.The active substance paralyzes the pest, as a result of which it dies. Plants can be irrigated throughout the season, with the exception of flowering periods.
"Fury" does not harm plants and humans, but it is dangerous for bees and fish, therefore, spraying with its participation near water bodies and apiaries is prohibited.
How to deal with folk remedies?
These methods of dealing with the beetle are suitable for small potato plantings. And also there are gardeners who do not use chemicals in the fight against harmful insects and fungal diseases of plants.
The disadvantage of home methods is that the beetle does not always die after spraying, but leaves the site.
Name of funds | Description and method of application |
Tobacco (makhorka) | The leaves contain a poisonous substance - nicotine, which is poisonous for the Colorado potato beetle. 200 g of dry tobacco pour 10 liters of boiling water... After two days, the solution is ready for use. Nicotine is not deposited in tubers at all, so tobacco can be used to spray potatoes. |
Ash | It is used in several ways. Potato leaves are pollinated with dry wood ash. Consumption rate - 1 kg per 10 sq. Also put a handful of ash 20-30 g when planting in the hole. Dry ash in a volume of 200 g is diluted with 10 liters of water and used for spraying on the leaves. |
Sawdust | Sprinkle fresh pine and birch sawdust around the bushes every two weeks. |
Mustard and vinegar | Pour 1 kg of mustard and 100 ml of 9% vinegar with water and insist for two days. Process the tops. |
Walnuts | Prepare an infusion of fruits, shells and leaves. Insist 5 days. Use for spraying. |
Sagebrush | Use 200 g of leaves for 5 liters of hot water... Treat the potato field by spraying infusion. |
Elecampane | Grind 100 g of elecampane roots and pour boiling water over. Insist for two days and apply the poison for spraying. |
"Kinmix"
The tool enters into pest control within an hour from the moment of spraying and does not lose its effectiveness for 2-3 weeks. Leaves need to be processed on both sides (no more than 1-2 times per season). The drug paralyzes adults and larvae, exterminates insects that have just emerged from fresh clutches.
"Kinmix" decomposes in the environment in a short time, but is detrimental to fish and bees. Available in 2.5 ml ampoules and 10 ml vials. To process 100 square meters, 10 ml of the substance will be needed.
Other drugs from this group are also produced, with the help of which it will be possible to destroy the population of the Colorado potato beetle. Among them: "Alfas", "Fatrin", "Karate Zeon", "Altyn", "Sharpei", etc.
Important! If the composition is used for the first time, it is advisable to test it for the first time on one bush. After a day, you need to observe the reaction. In the absence of damage, you can start processing all landings.
Folk methods of struggle
Enterprising domestic summer residents are actively fighting the pest using simple hand-made tools. Some of them have little effect, others (especially with a small number of insects) are quite successful.
Recipes:
- finely chopped wormwood greens are poured into a bucket, poured to the top with boiling water. Leave to infuse for 2-3 days, filter and spray potato bushes;
- rub a piece of laundry soap, add 2 liters of sifted wood ash to the mixture. Pour in water (10 l), stir until the soap dissolves, then process the planting on the sheet;
- they successfully fight a dangerous pest with the help of calendula, marigolds, dill. These plants are planted along the edges of the potato beds, in rows. The smell of flowers and umbrellas repels insects from the crop (and not only from potatoes);
- sifted ash is poured over the soil near the potatoes;
- insist water formulations and make decoctions with tobacco, hot pepper, leaves and stems of burdock, chopped garlic. The beds are sprayed twice a week throughout the season;
Potassium permanganate, which is familiar to every gardener, is used to treat tubers, and the plantings are sprayed with a solution of boric acid with the obligatory addition of shavings of laundry soap (for better adhesion).
"Aktara"
This tool works with lightning speed, in just one hour it destroys the pests that stick around the potato bushes. The blow is applied to both larvae and adults. It is presented in the form of a concentrate, emulsion and water-soluble granules. To cope with beetles, one spraying will be enough. After 20 days, the procedure can be repeated.
Not only irrigation of plants is allowed, but also the introduction of the solution under the root and into the hole before planting potatoes. However, keep in mind that soil treatment can negatively affect the tubers themselves. Low toxicity for fish and birds. Destructive to bees. The advantage of "Aktara" is that the product is not addictive to pests and remains effective after rain. An excellent result is obtained by using it in combination with organic and mineral fertilizers. Promotes improved root growth. To process 1 square meter, 0.08 g of the drug will be required.
Varieties that are not afraid of the pest
Colorado beetles love to eat potatoes with delicate leaves, so breeders breed tasteless hybrids. Parasite-resistant varieties have dense leaves, pubescent with thick hairs. It is difficult for females to lay eggs on greenery, and high concentrations of solanine are dangerous for larvae. The tough tops regenerate quickly and easily deal with damage.
The disadvantages of such varieties include the insipid taste of root vegetables and susceptibility to disease. Among the relatively resistant species, agrarians distinguish the following:
- "Kamensky". An early-ripening fruitful variety with a red rough skin, is not afraid of Colorado beetles, late blight and mosaic.
- Lasunak. The Belarusian hybrid is suitable for growing in small areas. The advantages are versatility and good immunity.
- "Early morning". Popular table variety with light beige skin and shallow eyes. It lies for a long time and retains its presentation, is not afraid of infections.
- "Reliable Bryansk". The yielding look with tough tops can be recognized by the red fruits with white flesh.
- Nikulinsky. Has elongated beige tubers with a high starch content, has improved resistance to pests and viruses.
Modern hybrids are bred using transgenic technology. The Bt genome of soil bacteria, which is a natural enemy of the Colorado potato beetle, is introduced into plants. The parasites do not eat the aerial parts of the modified potato and avoid laying eggs on the foliage.
Not all GM varieties can be imported into Russia. From hybrids of the Monsanto Corporation, products from the New Leaf series (Russet Burbank, Superio and Atlantic) are allowed. The works of domestic breeders are released under the brand name "New List" (Elizaveta, Lugovskoy).
Colorado beetles are dangerous pests that are difficult to kill on potatoes. For the fight to be effective, you need to combine chemical methods and folk recipes. It is easy to kill forms wintering in the soil by deep digging in the fall, and in the spring to prevent invasion by traps.
"Commander"
Soluble concentrate is used to prepare solutions. For processing 100 square meters, 5 liters of the composition is enough. It can be used in regions with any climatic conditions.
After irrigation of plants, Colorado beetles die within 3 days, you can forget about new pests for almost 2 months from the date of the procedure. This tool can be used to treat tubers before planting.Toxic to fish bees. In this regard, it is not recommended to use it near water bodies and apiaries. All work with the participation of this chemical composition must be carried out without ignoring personal protective equipment.
To prevent the solution from being washed off the leaves, it is recommended to add a little liquid soap to it.
Iskra Zolotaya
The insecticide is in great demand, as it can be used to protect a huge number of crops (about 140). Packaged in ampoules (1 and 5 ml), in vials (10 ml each). It can be presented in the form of a powder (one package contains 40 g of the drug). To process one hundred square meters, 1 ml of the product is enough. Its principle of action is as follows: the substance penetrates the plant, after which the pests refuse to feed on it, after a few days the insects will be removed. The effect lasts 25 days. Processed landings are not afraid of beetles arriving from other areas. Not toxic to humans, fish and birds. Dangerous for bees.
"Tanrek"
It paralyzes Colorado beetles and completely destroys them in 24 hours. If there are apiaries at the summer cottage, it is recommended to take them out, since the composition is toxic to bees. Do not use it near bodies of water. The effect lasts up to one month. Packaged in ampoules, vials, cans. The product is economically consumed (diluted with water in a ratio of 1:10). Easy to apply, stays on plants after watering and rains. It can be used as a prophylactic agent for disinfecting planting material.
Before boarding
In order to initially protect the potatoes from damage by the Colorado potato beetle, gardeners recommend treating the tubers and beds with special dressing preparations. Once in such a cultivated field, insects will not even lay larvae on it - the terrain will be so uncomfortable for them.
The disadvantage of pre-etching is that it is enough only until the time when the plants begin to bloom. However, this is already good, because by that time the sprouts become strong and strong, and due to coarsening and not so tasty for the beetle.
It is recommended to use the following preparations as dressing agents:
- Taboo. Click on the link to learn more about how to use the Colorado Potato Beetle and Wireworm Taboo.
Taboo - Tirana;
- Cruiser;
- Prestige. But how the potatoes are processed before planting with Prestige, you can find out by reading the content of this article.
It is quite simple to use such funds: you just need to prepare the solution according to the instructions, and then spray it on the tubers before planting in the holes. Sometimes they are also sprayed with the agent directly into the wells.
"Monsoon"
Imidacloprid concentrate. The substance paralyzes insects. It is characterized by high resistance, decomposes for a long time in the soil without losing its protective properties. Presented on sale in 10 ml bottles and 1 and 5 liter bottles.
The active substance blocks the nervous system of pests, as a result of which they lose their ability to move and eat. The advantage of the drug is the ability to process adult plants and seedlings. Protects crops for one month after irrigation. Does not lose its effectiveness after rain and watering. Can be used for processing in high humidity conditions (in greenhouses). Low toxicity for birds and bees. Spraying can be carried out using other drugs from this group:
- "Grinda". The active substance is acetamiprid. Paralyzes the nervous system of insects. Available in powder form, it protects crops from pests for 21 days. The product is characterized by low toxicity. To protect plants from the Colorado potato beetle, one spraying procedure per season is enough.
- Mospilan. The drug does not harm bees and bumblebees. Presented in powder form. The composition contains the same active substance as in "Grind".The peculiarity of the product is that it moves to the untreated areas of the plant, providing additional protection from insects. The first results after spraying make themselves felt in an hour. A day later, all adults and their masks will die.
- "Confidor Extra". Another remedy based on imidacloprid. After spraying the plants, you can not think about Colorado beetles for a month. The drug can cause damage to bees, and therefore it is recommended to carry out the treatment in the morning or evening hours, when they do not fly out of the apiaries.
- Biotlin Bau. An equally effective agent, the active substance of which is the same imidacloprid. The composition is poured into a spray bottle, so there is no need to prepare a solution. It is enough to purchase the drug and immediately start spraying. Destroys adult insects and larvae. Does not lose its effectiveness for 14-20 days.
Chemicals used for dressing tubers
It is possible to protect potatoes from attacks of the Colorado potato beetle already at the stage of preparation of planting tubers. For this, there are special preparations with which you can and should process seed potatoes shortly before planting.
Processed potatoes are reliably protected from the Colorado potato beetle before and after sprouting: the product remains on the tubers and repels insects in the soil, and also penetrates through the roots into the plants and begins to protect the already above-ground parts of the potato. There are many such remedies for the Colorado potato beetle on potatoes, many of them are well known to most vegetable growers.
Prestige
Prestige is an insecticide-dressing agent that has both insecticidal and fungicidal (protecting against fungi) properties. It prevents not only the Colorado potato beetle from attacking potatoes, but also many other garden pests: aphids, thrips, sawflies, midges, wireworms.
The advantages of this insecticide for treating tubers are as follows:
- 1 pre-planting treatment of potatoes replaces several treatments of vegetative plants with other similar preparations;
- the product is low-toxic, its active ingredients completely disintegrate long before harvest, so the harvested tubers can be eaten immediately after digging up.
In addition to the protective effect, the Prestige remedy for the Colorado potato beetle has other positive properties: it stimulates germination, shoot formation, enhances photosynthetic processes, plant resistance to stressful environmental conditions, increases productivity, and improves the quality of dug tubers of a new crop.
Taboo
This is another preparation of biological origin, which can be used to treat seed potato tubers when planted from a beetle, as well as a wireworm. Taboo is distinguished by vivid systemic activity: it protects potatoes at the stage of germination and emerging seedlings. The drug shows a high result regardless of whether the weather and temperature conditions are favorable or not, and has a long period of protection - up to 1.5 months from the Colorado potato beetle and from the larvae of click beetles - during the entire time of their activity.
It is very easy to process potatoes with it: it has a color marker that allows you to check the uniformity of the application of the prepared solution to the tubers. Taboo (in the dosages recommended by the manufacturer) is not toxic to humans, animals, birds, bees, other beneficial insects, earthworms and is very economical: just 10 ml of this preparation is enough to process about 120 kg of planting tubers.
The second option for using the remedy for the Colorado potato beetle Tabu is considered to be soil cultivation in planting grooves or holes with potatoes placed in them.After spraying, the drug creates a strong film on the surface of the potatoes, from which insecticides, under the influence of soil moisture, penetrate into the soil and create a kind of protective halo around them. The plant absorbs these substances both from the tuber and from the soil through the roots. Thus, the drug is distributed as evenly as possible over all parts of the potato bush, providing them with excellent and long-term protection from pests. After eating the leaves of the treated potato bushes with this insecticide, the beetles die on them within 1 day.
Regulators of growth and development of insects against the Colorado potato beetle
Insect growth and development regulators are hormonal insecticides of synthetic origin. Preparations of such a plan disrupt the functioning of the insect's body, have a negative effect on the process of incubation of eggs. The composition begins to act after contact with the pest. The active ingredient immediately blocks the biological development of the insect.
Hormonal insecticides are divided into two types:
- Insect growth inhibitors. The most famous is Nomolt. After processing, the insect dies during the transition to a further stage of development.
- Inhibitors of the synthesis of chitin, the outer cover of pests. Among these drugs are "Match", "Sonnet". In the process of molting, the larva sheds its protective shell, as a result of which it dies.
Advice! The use of regulators of growth and development of insects should be resorted to at the beginning of the appearance of clutches, before biologically and pyrethroid insecticides are used. It is permissible to carry out processing no more than 2 times per season.
We present to your attention a table where preparations are presented that do not pose a danger to humans, birds, bees and fish.
Complex preparations - advantages for gardeners
This is a recent word in the world of insecticidal agents, which made it possible to combine the properties of insecticides (control of insects) with fungicides (control of fungal diseases), as well as to combine the agent, turning it into both a disinfectant and a pollinator of greens.
Along the way, the use of such universal insectofungicides increases germination and productivity, protects young shoots from putrefactive, mold and parasitic lesions at the stage of their greatest vulnerability.
In the annotation to the product, the composition, the recipe for mixing the solution, the processing methods and their frequency, precautions are written, as well as the duration of the protective work of the drug and its compatibility with other agents.
The following means have already won the sympathy of vegetable growers:
The "Tirana" considered above similarly has the right to be in the series of complex preparations, both in terms of the combined composition, and, if possible, to use the preparation for etching and spraying.
Safety measures when working with drugs
Before proceeding with the fight against Colorado beetles, it is imperative that you familiarize yourself with the safety rules:
- It is unacceptable to carry out treatment for pregnant and lactating women, children.
- During the procedure, it is forbidden to eat and drink.
- In no case should the drugs be mixed.
- Products in the form of emulsions and suspensions must be mixed well so that during spraying it does not settle to the bottom.
- Use special sprayers for processing.
- Before using this or that tool, you need to familiarize yourself with its expiration date.
- After spraying is complete, you must immediately wash your hands and face, take a shower, and rinse your mouth.
- For two days after the end of the procedure, do not carry out any summer cottage work in this place.
- If formulations are used that are capable of hitting bees, the apiary must be taken out of the site.
- Store chemicals in a dry place where children and animals are restricted.
- Dilute funds in a special container.
- Dispose of surplus solutions, taking into account the information provided in the instructions.
The modern market offers a huge range of chemicals designed to kill insect pests. We have described the most effective ones. Which one to choose is up to you. Good luck in this difficult struggle!
Features of the pest
An insect from the leaf beetle family grows up to 12 mm in length, and no more than 7 mm in width. The parasite has an oval convex body, painted in a bright yellow-orange color with small black spots. Powerful webbed wings help you travel long distances quickly.
Colorado potato beetle larvae change color several times. Due to the saturation of the body with carotene, the gray skin gradually darkens, then acquires a thick yellow or orange tint. The young have a black head and rows of prominent markings on the sides of the body.
Colorado beetles for the winter burrow into the ground 50 cm and hibernate. With the onset of heat, the parasites wake up, actively feed and mate. Females fertilized in the fall immediately begin to lay eggs in the spring. One healthy individual becomes a hotbed of mass invasion of potatoes. During the day, female specimens can give up to 80 pieces of embryos, over the summer - up to 700. In the northern regions, pests leave 1 generation, and in warm climates - up to 3.
The larvae appear in 1-3 weeks, begin to feed intensively and pupate after 20 days. The developmental stages of young animals are divided into four ages, each of which has a specific diet. At the beginning of life, Colorado beetles eat the lower part of the leaf, then gnaw the veins on the plates. As the brood develops, it moves to the tops of the potato, moves to neighboring plants.
Adult Colorado beetles accumulate stocks within 1-3 weeks, so they easily tolerate massive flights. Pests move from one place to another at a speed of 7 km / h. The life span of insects is 12 months. Under unfavorable conditions, the parasites enter diapause, which lasts up to 3 years. This allows livestock to survive hunger, which makes it difficult to combat infestation.
Insects have few natural enemies, the maximum threat comes only from humans. Colorado beetles feed on nightshade plants and have the ability to accumulate toxic toxic substances in the body. Only guinea fowls, turkeys and pheasants destroy the larvae. Predators are unable to contain breeding pests at a safe level.
At home, the parasite's natural enemy is the bug, which absorbs from 300 to 2000 eggs. In the conditions of the domestic climate, other insects help to reduce the number of the Colorado potato beetle:
- ladybugs;
- ground beetles;
- ants;
- wasps;
- spiders;
- grasshoppers;
- lacewing.
The use of insecticides on plots reduces the population of not only pests, but also useful entomophages.
If the gardener practices folk methods of dealing with the Colorado potato beetle, then it is better to lure natural predators to the beds. Individuals can be hand-picked and transferred to plants.