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With a crop of 500 kg of potatoes, a lot also grows from a weave of tops - 300 - 400 kg. If you at least partially force the nutrients from the tops to pass into the tubers, you can significantly increase the yield. This can be done in a special way, which is called senication.

In order to increase the yield, one single spraying is enough. The results are impressive - without any effort, the crop will grow by at least 10 - 15%, the tubers become more beautiful, tastier and better stored. The incidence of disease is greatly reduced.

What is eaten with

Recently, there has been interest in a special method of foliar feeding of potatoes - senication. Its essence lies in the fact that by spraying with a concentrated solution of superphosphate, they cause artificial aging of the tops and the outflow of nutrition into the tubers.

When to Senicate

At first glance, the information is contradictory, some advise spraying immediately after flowering, others - 15-20 days after flowering. Both of them are right. It is necessary to process plants 20 days before harvesting. But not before they bloom. That is, early varieties are sprayed a week before harvesting, ultra-early ones, such as Timo, are not sprayed at all. Medium ones are processed a week after flowering, and medium-late - after 15 - 20 days. It is important to guess with the weather conditions.

Spraying is carried out in clear calm weather. It is useless to waste the solution if this event is carried out before the rain or immediately after the rain, as well as during dew. Water will dilute and wash off the solution, the result will be inferior. The best time to spray is around noon when the dew is gone and the plants are dehydrated. You can spray in the evening. This will increase the outflow of plastic substances from the stems and leaves into the tubers at night.

Cooking "living water"

All you need is a bucket of water, a sprayer and 2 kg of superphosphate. If you buy double superphosphate, it will take 1 kg. If it was not possible to get them, you can also use diammophoska, but it will require 3 kg. We must immediately warn that superphosphate is poorly soluble in water. Therefore, the solution is prepared two hours before use. Pour 2 kg of superphosphate into 10 liters of water and mix thoroughly. After 2 hours, the settled solution is poured into another bucket and filtered into a sprayer through a 3-4-layer gauze.

Advanced growers add some micronutrients or even a little herbicide. But we do not advise beginners in senication to experiment. It is better to first check such “evil” solutions on several bushes and, after making sure of a positive result, use it as your own know-how next year. By the way, the sediment left from superphosphate is an excellent fertilizer, and it can be used for any crop, embedding it into the soil with a chopper.

What to expect from "old age"

Some gardeners exaggerate, claiming that the yield increases by 2-3 times. Perhaps, in some wet years, when the potatoes are fattening, leaving the tops, this is true. But in the usual average dry summer, the increase is more modest - 10 - 15%. The best part is that the tubers are very beautiful, marketable, practically undamaged by diseases. And the harvest is perfectly stored all winter, without requiring bulkheads. Such spraying has a particularly beneficial effect on taste. Starch content increases significantly, and even varieties prone to watery and soapy tubers become tasty and crumbly.

ATTENTION! In the absence of a clearly pronounced effect of yellowing and dying off of the above-ground mass, 8-9 days after the first spraying, but no later than 10 days before the start of harvesting, a second senication is carried out with the same solution.

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When to spray potatoes from a beetle?

A neighbor treats potato tubers from a beetle before planting with Taboo. Potatoes grow already with the content of a component that repels beetles. We refused such a tool. After all, it turns out that the plant is saturated with chemistry!

We prefer to spray potatoes with insecticides, when we find the first larvae - at the end of June.

This year we used the "Tan-rek" tool. The instructions for the preparation indicate that the time of death of insects is 2 days. A perfectly acceptable period.

What time of day is best to spray the Colorado potato beetle? We always process potatoes in the evening. And it’s not hot, and it’s easier for the plants.

Question: Is it possible to spray potatoes during flowering?

Our potatoes are starting to bloom, and just yesterday we processed them from the Colorado potato beetle. Nothing terrible happened - she is cheerful, she has not lost a single flower. We always do this and the potato harvest is always excellent.

How to spray potatoes from a beetle: our experience

And now in more detail how and with what to spray potatoes from the Colorado potato beetle, effectively and without unnecessary troubles.

We bought the Tan-Rek tool in one of the country stores. Price - 8 rubles per bag with an ampoule. It took 4 such ampoules for our area (total 32 rubles).

The agent was dissolved in a 20-liter canister with water.

For spraying, a garden pollinator "Beetle" was used. By the way, it is very convenient for them to spray plants from aphids, whitefly, weevil, to make foliar top dressing. Baba Tanya sprays potatoes from the beetle with another chemical agent - Intavir.

Folk remedies against chemistry: what else can you spray potatoes from the Colorado potato beetle

Birch tar: 100 grams diluted in 8-10 liters of water and sprayed every three days;

Onion peel: 200 g pour 10 liters of warm water, leave for 24 hours, spray potatoes;

Bitter wormwood: 200 g mixed with 1 glass of wood ash, pour 10 liters of hot water, leave for 6 hours;

Dusting with wood ash: spend in the morning, on dew. After a day or two, most insects die;

A decoction of celandine. The leaves are placed in a bucket, poured with cold water, boiled for 20-30 minutes. Then the broth is diluted in a ratio of 1 to 20;

Infusion of garlic. 1 cup chopped garlic and pour 10 liters of warm water, leave for 1 day;

Some plants repel the Colorado potato beetle. For example, if you plant garlic, beans or coriander, marigolds or nasturtium in the neighborhood, their smell can scare away beetles.

Many gardeners plant potatoes, which have long become one of the staple foods. It is not at all difficult to grow it, however, the overseas guests of the Colorado, who are able to destroy all plantings in a short time, become an obstacle to a large harvest. Therefore, the processing of potatoes from the Colorado potato beetle must be carried out regularly and carefully, from the preparation of planting material to harvesting.

Colorado potato beetle and its food

After wintering underground, they begin to appear on the surface already when it warms up to + 10-14ºС, which in central Russia occurs in late April and early May. After that, adult females actively lay eggs on young, just sprouted potato sprouts.

The main food for the "colorados" is potato tops, which are eaten in large quantities by both larvae and adult beetles. Their development from eggs begins during the period when buds and flowers appear on the bushes, it is at this moment that the planting of unprocessed potatoes is most vulnerable and suffers from pest invasion.

If nothing is done at such a time, then the Colorado potato beetles are able to eat almost 80% of the green mass of the bushes, which will entail a strong decrease in crop yields.

On a note!

The danger of the Colorado potato beetle lies in its extraordinary voracity and high reproduction rate. One female during the spring-summer season can lay up to 500 eggs, from which fast-growing red larvae hatch, feeding exclusively on young potato leaves and flowers.

When to spray potatoes?

If you plan to treat it with various ones, then you need to know how and when to spray potatoes from the Colorado potato beetle. The optimal time is selected based on the type of vegetable:

• it is better to spray early potatoes when the first eggs laid by females appear, then again - after 10-14 days;
• medium and late varieties are sprayed with a large number of larvae and adult pests.

The optimal spraying time is dry and calm weather, with high humidity, the poisons will become less concentrated, which will reduce their effectiveness. In hot weather, processing is hazardous to health due to strong toxic fumes of chemicals.

You should also know the time when it is better to process potato bushes: these are morning hours until 9-10 and evening hours after 18, but you must also ensure that there is no dew or raindrops on the leaves.

During the mass period, it is not recommended, because during the formation of tubers, the plant is vulnerable to chemicals, and toxic preparations can destroy not only harmful, but also beneficial pollinating insects. Therefore, it is better to postpone processing until the end of flowering.

If the manual assembly of Colorado beetles at such a time is not successful, then you can use biological preparations that will do less harm to the crop and help protect the bushes from harmful insects.

Processing can be carried out at least 2-3 weeks before the start of the potato harvest, otherwise the resulting tubers will be harmful to health.

Ways to deal with the Colorado potato beetle

When choosing a means or method for treating potatoes from the Colorado potato beetle, you need to take into account the degree of damage to the bushes by larvae or adult insects, the vegetative period of bush development, the presence of flowers and the amount of time left before harvesting.

With a slight damage by pests to flowers and tops, it is recommended to use manual collection of beetles and other folk methods, with mass reproduction - it will not be possible to do without chemicals.

On a note!

You can eat potatoes after treatment with chemical insecticides only after at least 20 days. During this period, toxic substances break down into harmless chemical compounds, and the grown tubers become suitable for human consumption.

Many gardeners try, but use only herbal infusions or decoctions that are used to process bushes. They should be cooked just before spraying the potatoes, and always repeat the procedure, because. they do not affect eggs and larvae.

Popular methods and recipes against the Colorado potato beetle:

• dusting tubers with birch wood ash powder during planting;
• a decoction of horsetail and dandelion, which are taken in equal parts, pour water and bring the mixture to a boil, then you need to cool, strain and before splashing, dilute in a ratio of 500 g of decoction in a bucket of water;
• a solution of dry celandine plants: they are put in a bucket, then water is poured and heated to a boil, then the broth cools, it is filtered and added to a bucket of 0.5 liters for spraying;
• an infusion of 200 g of sifted wood ash and 200 g of fresh chopped wormwood is prepared with the addition of boiling water, leave for 3 hours, mix well and filter, then spray the plants with it;
• wood ash, well sifted, can also be used dry, regularly sprinkling potato bushes, which helps to get rid of Colorado potato beetles in a week;
• a decoction of 3 kg of tomato tops per 10 liters of heated water is prepared by boiling it for 30 minutes, then it is infused, filtered and diluted at the rate of 1:5 with the addition of 40 g of grated laundry soap;
• a solution of 100 g of dry mustard in a bucket of water, 100 g of 9% vinegar is added there, then you need to sprinkle potato bushes with it.

Biologicals

Biological preparations for processing potatoes are safe for the soil and destroy exclusively striped pests. Their active ingredients do not harm when exposed to air, water and young tubers.

Popular biologics:

• Bitobaxibacillin or Bicol - is available in the form of a powder or tablets containing spore-crystalline ingredients and an exotoxin. The maximum number of treatments per summer is 4 times. Before spraying, a solution is prepared at the rate of 40-100 g per bucket of water. The drug contains spores of bacteria that enter the intestines of larvae and beetles and begin to develop, paralyzing the nervous system and causing mutations in adults, they also infect their fellows. Beetles that emerged from poisoned larvae are not able to reproduce.
• - refers to bioactive drugs that paralyze insects after entering their body, which occurs 8-10 hours after potato processing. The death of larvae and adults occurs after 3-6 days. Its disadvantage is the absence of damage to the oviposition, which is why it is necessary to re-spray after the next generation appears. Minimum air temperature during processing: +18ºС.
• Agravertin is a bioinsecticide preparation containing Avertin N, which acts similarly to Fitoverm, the only difference is that it is possible to process potato tops at a lower air temperature - from +12ºС. It also protects against thrips, spider mites and other pests. Spraying should be done every 2 days at least 3 times.

Processing chemicals

Insecticides are rightfully considered the most effective in, because they contain potent poisons. Therefore, when choosing how to spray potatoes from the Colorado potato beetle, it is recommended to focus on proven and highly effective preparations.

The most popular chemical insecticides:

• - insect-fungicide, contains neonicotinoid imidacloprid, which does not depend on washing off by rain, because it penetrates into the green parts of plants and poisons pests after they eat the leaves. It has a protective effect and stimulates the growth of plants, acts within 2-4 weeks. Recommended for repeated spraying against the Colorado potato beetle, but no later than 20 days before harvest.
• - an insecticidal drug, available in several forms (suspension, granules, tablets, powder), which can be treated after planting when germination and before the flowering of potato bushes, has a detrimental effect for several hours.
• Destroy - a systemic contact agent containing imidocloprid, lambdacyhalothrin, is recommended for use in the northern regions, since it retains its properties at low temperatures.
• - includes insecticidal components cypermethrin and chlorpyrifos, which allow you to quickly destroy larvae and beetles in one spray.
• Confidor Extra - refers to the systemic insecticidal preparations of the latest generation, which have almost no effect on root crops.
• - an insecticide, the components of which (thiamethoxam, lambdacyhalothrin, etc.) not only destroy pests, but also feed plants due to the content of vitamins, it is recommended to apply every 14 days.
• As well as Bankol, Senpai, Decis, Karate, etc.

In order to properly spray potato tops, when preparing an active solution of each preparation, one should be guided by the attached instructions; it is impossible to exceed the dosage of the insecticidal agent due to its likely negative effect on the plant. During processing, wear protective clothing, a respirator, gloves, goggles. After spraying, wash your face, hands, clothes and shoes well.

In recent years, new potent drugs have appeared that are not used during the mass attack of the Colorado potato beetles, but. The uniqueness of these products is that toxic substances penetrate only into potato tops, eating which, larvae and adult pests are poisoned and die.

The duration of action of such funds is 45-50 days, during which potato bushes have time to grow up well, safely survive the period of flowering and the formation of young tubers. Caring owners can then decide what measures to apply to further eradicate adult Colorado potato beetles on potatoes, given the processing time and the upcoming harvest.

Benefits of preplant treatment:

• increasing the yield of bushes;
• the ability to protect plants from pests and diseases for a long time;
• reduction in the number of sprays;
• improving the quality of tubers and promoting a good preservation of the crop.

Funds are used in several ways:

• processing from a sprayer of planting material, spread out on a film, and then drying;
• soaking nets with tubers in the prepared solution, guided by the instructions for this preparation, then drying and planting;
• spraying with the preparation of holes or furrows with spread out planting tubers.

These drugs include:

• Prestige, Chameleon - insecticides for spraying planting tubers, suitable for medium early and medium late varieties, applied directly by spraying potatoes before planting them in the ground;
• , Cruiser - are used for dressing potato tubers of early varieties, the prepared solution can be used to process the decomposed planting material or add it to holes or furrows with potatoes.

In order to save potato bushes from Colorado beetles and get a good harvest, it is necessary to use all kinds of methods and means of control, from pre-planting to the destruction of numerous pests on adult bushes. The choice between folk recipes and chemical preparations depends on the degree of damage to plantings in the garden, as well as the capabilities and wishes of the owner.

Every lover of garden work has to face on his site in the summer. Some summer residents are trying to get rid of pests by collecting them manually, while others use them for this purpose. Many novice farmers are puzzled by the question of whether it is possible to kill a beetle when potatoes are in bloom.

Spraying agents

Chemical preparations (insecticides) are recognized as the most effective in the fight against Colorado potato beetles:

• Spraying potatoes during the period of mass appearance of pests is effective with Aktellik. It has no less effective properties, the agent is used from the moment the first shoots appear until the very flowering.
• It is intended for repeated spraying of potatoes against Colorado potato beetles. It is used at each appearance of insects, but no later than 3 weeks before harvest.
• Confidor Maxi is distinguished by the absence of a negative impact on root crops.

Why you can not spray potatoes during flowering

However, experts do not recommend poisoning potatoes during flowering with all of the above preparations. This is explained by the fact that during this period the culture becomes very vulnerable to pesticides, since it begins the active formation of tubers.

On a note!

It is undesirable to spray the crop during flowering and because toxic components can poison pollinating insects. Chemical treatment can be applied only before the formation of inflorescences and after the flowering of potatoes.

What to do if bugs appear on potatoes during flowering

Often, gardeners are faced with the fact that when the potatoes begin to bloom, many beetles appear on it. The ideal option in this case is the collection of insects by hand. With a large accumulation of pests, it is possible to treat potatoes during flowering only with biological preparations:

• Akarin;
• Bitoxibacillin;
• Bicol;
• Agravertin.

It is preferable to treat with the appearance of the pest in the larval stage. To achieve the maximum effect after 7 days, re-treatment is carried out using. For this they often use:

• Wood ash. 0.5 kg of raw materials are poured into 1 liter of water and brought to a boil. After a day, 50 g of laundry soap is added to the resulting infusion to enhance the fixing properties. The composition is adjusted to 10 liters of volume, after which they can be sprayed with plants from the Colorado potato beetle.
• . So that young potato shoots are not attacked by harmful insects, they must be sprayed with tobacco infusion. In 10 liters of water, 0.5 kg of dry tobacco is infused for a day, then laundry soap is added to the resulting composition.
• , which is prepared by mixing 10 liters of water with 100 g of raw materials.
• Infusions of various plants (walnut, poplar, wormwood, etc.).

Is it worth it to fight Colorado beetles after flowering potatoes

The question of whether chemical treatment is necessary after the inflorescences have fallen is one of the frequently asked questions. Agronomists argue that during such a period, insect attacks no longer pose a serious danger to the aerial parts of plants, due to the fact that from that moment the tops begin to fade gradually, and all culture juices are directed to the development of tubers. And the use of pesticides, which subsequently accumulate in the tubers, will not bring benefits to human health.