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No farmer can get by without active measures to protect your potato crop from pests, diseases and weeds.

Plants can be affected by cancer, scab, aphids, Colorado potato beetle, nematode, parasites, fusarium rot, late blight, wrinkled and banded mosaics (when leaves curl or necrotic spots form on them) and various viruses.

Many people ask if it is possible to spray potatoes during flowering than to spray potatoes from beetles? What methods of struggle should be used? Let's try to answer these and other questions in this article.

So that the harvested crop with such difficulty does not disappear, a lot of chemical and biological preparations have been developed for spraying potatoes.

They are classified into fungicides, insecticides and herbicides. For the spraying procedure, a special device is used - a sprayer for potatoes. A potato sprayer can be purchased at a specialist store.

When choosing drugs, it is necessary to focus on the dominant problem, as well as the stage of development of the potato. Spraying potatoes must be carried out in compliance with safety measures.

Spraying potatoes

The question of spraying potatoes is relevant every season. How to process the plantings so as not to harm health and get a good harvest? Let's talk about this further.

  • Can I spray potatoes?

    Regardless of the type of variety, early or late, potatoes need periodic soil cultivation, three times feeding and spraying. the main thing choose the right drugsspecially designed for processing this type of potato.

  • When to spray potatoes?

    Experts advise to spray a maximum of 60 days before harvest. Some formulations suitable for early varieties are recommended for the last spray one week before harvesting the potatoes.

    Preparations of different spectra of action are used at different periods - some during the mass distribution of larvae, others should preferably be used for preventive purposes, when even egg-laying has not yet appeared.

  • How long (when) can you eat potatoes after spraying?

    Immediately after processing potatoes with drugs, you can eat the crop only if it was harvested in August. Early and mid-early varieties can be eaten 50 days after spraying... It is then that all the toxins that could remain in the tubers will be eliminated.

During flowering

Very often you can hear the question of how justified is spraying potatoes during flowering and whether it is worth doing. Let's take a look at this issue:

  1. Can potatoes be sprayed during flowering?

    Undesirable. The optimal time for spraying is considered to be the period before and after the flowering of potatoes. Even if the first beetles were seen on the flowers, it is better to use folk methods of struggle or to collect insects by hand.

  2. How to spray potatoes during flowering?

    When potatoes are blooming, you can spray with biological and chemical preparations "Fitoverm", "Agravertin", "Bicol", "Akarin", "Bitoxibacillin". The best results, spraying will bring, at the first appearance of the beetle larvae.

    Repeat spraying after a week. From folk remedies, gardeners choose nicotine baiting: for 10 liters of water for two days make an infusion of 200 cigarettes, then dilute with 40 g of laundry soap. Also, flowers from pests can be protected by sprinkling with ash through a sieve, sprinkling with various infusions and decoctions of walnut or poplar leaves.

  3. Can potatoes be sprayed after flowering?

    Yes, you can. The beetles are hiding underground at this time and come out only after a year with the first warming... During this period, it can be lured out and destroyed with folk remedies or resort to special drugs.

  4. Why can't you spray potatoes during flowering?

    Some drugs are so toxic that they can kill bees and other insects that pollinate plants. Despite the fact that potatoes are self-pollinated, its flowers still attract insects... In addition, potatoes are just beginning to form during the flowering period, and are most vulnerable to chemical poisoning.

Spraying is carried out in the early morning (before 10 o'clock) or in the evening (after 7 pm), when the temperatures are at their lowest, and the weather becomes calm and dry (so that the poison does not wash away with dew and evaporate). This will allow the drug to have the strongest effect and be evenly distributed over all the bushes.

You will learn more about the best chemicals in the fight against the pest in the material "The best drugs to fight the Colorado potato beetle part 1 and part 2".

Colorado potato beetle

The Colorado potato beetle brings a lot of unpleasant minutes to gardeners. Read on to learn when to spray potatoes from the Colorado potato beetle and how to spray potatoes from the beetle.

  • How to properly spray potatoes from the Colorado potato beetle?

    Each drug contains the exact instructions for use, as well as a list of recommendations for self-protection (respirator, gloves, spray in hot or cool weather, etc.), for the most part they are universal, since they are based on different substances and are productive under different conditions.

    All potato varieties must be sprayed one or more times in season. To prevent the beetles from becoming addictive and not developing immunity to the poison, the chemicals need to be changed regularly.

    Most drugs are for external use and are allowed to spray only the tops. It becomes toxic to beetles that eat stems and foliage, while tubers after a certain period are absolutely safe for humans.

  • How to spray potatoes from the Colorado potato beetle?

    Among the most commonly used drugs in the fight against the Colorado potato beetle developed by "Bitoxibacillin", "Aktara", "Aktelik", "Colorado", "Regent", "Arrivo", "Sonnet", "Decis extra", "Confidor", "Bankol", "Corado", "Mospilan", "Agravertin", "Bicol", "Senpai".

  • When to spray potatoes from the Colorado potato beetle?

    As soon as the first eggs and larvae of the Colorado potato beetle were seen on the leaves and stems of the plants, spraying should be started. The interval between treatments is approximately 3-4 weeks. Depending on the type of preparation and the variety of potatoes, the terms differ last processing. For "Bitoxibacillin" it is a week before harvest, and for "Tsimbush" - 20 days.

Systemic toxic chemicals affect insects only after they have eaten plants treated with the drug. Contact poisons have their effect directly on contact with beetles. Gardeners advise alternating systemic and contact medications so that the Colorado potato beetle does not have time to adapt to chemicals.


Recently, the method of so-called senication or foliar feeding of potatoes has become more and more popular. The essence of the method is that a concentrated solution of superphostfat is prepared and, with the help of spraying, they cause artificial aging of the tops and the outflow of useful and nutrient substances to the tubers.

Some growers recommend performing the procedure immediately after flowering, others advise to wait 15-20 days. Both the first and the second are right, the main thing is that the processing of plants should be done 20 days before harvesting, but not earlier than they will fade. Thus, the early varieties are processed a week before harvesting, the ultra-early ones are not processed at all, the middle ones a week after flowering, the late ones - 15-20 days later. Spraying is carried out in calm weather.


Pour 2 kg of superphosphate with a bucket of water, the powder does not dissolve well, it will take about two hours. After 2 hours, the settling solution is poured into another container, filtering through cheesecloth. (The sludge can be used as a common fertilizer for other plants.)

The average statistic for this method is that the yield increases by 15-20%, and the tubers are very beautiful.

With Hom

Hom is a wettable copper oxychloride powder, which spray crops during the growing season to protect against late blight, Alternaria and other infections. The powder consumption is 40 g per 10 liters of water. 10 liters of ready-made solution will be enough for 100 sq.m.

Immediately after preparing the mixture with it it is necessary to generously spray the leaves of each bush... For this, only dry and calm weather is suitable.

This is a moderately hazardous substance., to work with it, you need to observe safety rules: while spraying potatoes with HOM - you cannot smoke, eat or drink, skin, eyes, breathing apparatus and head must be reliably protected (cotton dressing gown, respirator, goggles, gloves, etc. .).

Like most chemicals, Hom should not be used in hot weather, or in the immediate vicinity of water sources, animals and children. It is undesirable to spray potatoes during flowering.


Gardeners often ask whether it is possible to spray potato leaves with prestige?

"Prestige" everywhere used in the fight against the Colorado potato beetle and soil pests, penetrates into potato tubers, and only then sits in the stems and leaves of the aboveground part of the plant, which the insects feed on.

However, he fits only for spraying when planting potatoes planted in April and harvested in August (mid-early and mid-late varieties). Early potato varieties are harvested in June-July, the maximum harvest can be harvested before August 1.

In this case, the tubers themselves are pickled before planting, and not the tops.


Before you start planting tubers, you can leave them for 45-60 minutes in a solution of ammonium nitrate and superphosphate. Preparing potatoes will be much more efficient if immediately after that, remove the tubers and sprinkle with ashes.

None of the varieties have absolute resistance to late blight or Alternaria, but there are varying degrees of vulnerability. Even the most resistant potato varieties when new strains appear and other conditions can lose their immunity and become infected.

From late blight

Many varieties of the Urals, Siberia, the central black earth region, the Far East, Kamchatka and the central part of Russia are vulnerable to late blight. New varieties of potatoes are created by the selection methodwho are specially "hardened" against this disease.

If the harvest is still was struck by a fungal disease and ascomycete phytophthora, at the first signs of infection, you will need to use fungicides. The question arises: "How to spray potatoes from late blight?"

  • When to spray potatoes?

    When diseased tubers with sunken brown spots are identified and sorted, treatment should be started immediately before planting (Kvadis and Uniform will be protected for 3-4 weeks). Don't wait for the first symptoms - Engage in early prevention as after the focus of infection has already flared up, the treatment becomes almost ineffectual.

    Due to the rapid development of late blight, it will take about two weeks to completely affect all plants. For prevention one of the most productive "Maxim" and "Celest Top" (effect duration 2 weeks). Can I spray potatoes when they bloom? Generally not recommended. As soon as flowering is over, contact means "Bravo", "Ditan M-45", and "Shirlan" can be applied.

    Pre-harvesting with a contact preparation will help keep potatoes safe underground. At the same time, it is useful to use desiccants (continuous herbicides) to dry the plants, or manually cut the tops. Desiccants will make it easier to save the crop from infection at the last stage of ripening.

  • How to spray potatoes from late blight?

    Among pesticides for dehydration of tops and spraying of potatoes widespread drugs "DUAL GOLD", "Basta", "REVUS TOP", Celest Top, Gezagard, Reglon Super, Maxim and Fitosporin-M.


When processing potatoes it should be borne in mind the timing of its flowering and the period of collection finished harvest. Some drugs can only harm the potato, while others have no effect at all. When purchasing planting tubers, consider their varietybecause they differ in planting and harvesting times. Now you know how to spray potatoes during flowering, as well as the answers to many other questions.

Spraying necessarily carried out with the use of protective equipment and at a strictly defined time. To prevent pests from getting used to poisons, the types of drugs need to be changed several times.

Useful video!

Watch the video: Combine Two Colors, DONT MIX, then Spray! (May 2022).