Phytophthora on tomatoes: how to deal with folk remedies and prevent the development of the disease

Hello! It is no secret that one of the most popular and common vegetables in summer cottages is tomato.

I myself devote considerable attention to this vegetable. And also went through the fight against one of the main threats. Phytophthora caused a lot of inconvenience at the time.

Fortunately, my grandmother told me a reliable tool in the fight against this scourge, which allowed me not to lose a significant part of the crop. Want to learn how to deal with folk remedies with late blight on tomatoes? Then in the article below you will find all the relevant information.

Blight (late blight) of tomatoes - description

Phytophthora is tenacious and omnipresent: it lives on seeds, plant debris, in soil, walls of a greenhouse, and garden tools. The disease progresses in cold and humid weather.

Most of all phytophthora loves calcareous soils, thickened plantings, which hardly receive fresh air, temperature changes, dew, and plants weakened by poor or insufficient care.

Signs of the disease

This common and most dangerous disease can be diagnosed by several signs:

There are many chemical means of killing phytophthora, but they have one principle of action. In a long struggle with late blight, it is best to alternate remedies, since late blight is very tenacious and easily adapts to the drug if you use it from year to year.

Remedies for late blight

How to process tomatoes from late blight? The treatment of tomatoes from late blight is carried out by fungicides.

How to spray tomatoes from late blight? Dissolve 2 tablespoons of copper sulfate in 10 l of water and treat the tomatoes with this compound before flowering. You can also use calcium nitrate as a fungicide - 1 tablespoon of the substance is diluted in 10 liters of water.

Applied to protect against late blight and the antibiotic Trichopol, dissolving 10 tablets in 10 liters of water and treating this composition with tomatoes twice a month. And fungicides from the store (Fitosporin, Fundazole, etc.) are bred in accordance with the manufacturer's instructions. The first processing of tomatoes is carried out at the stage of ovary formation, after which the spraying is repeated every decade.

With severe damage to tomatoes, late blight must remove and burn all affected leaves, and treat the fruits, and especially the stalk, with a one percent solution of calcium chloride.

Chemical treatment of tomatoes from phytophthora gives a quick and reliable result, but it is undesirable to use them on ripening fruits, as this can negatively affect the quality of the crop.

You can protect tomatoes from the disease by preventive measures or non-toxic folk remedies. But if you decide to apply fungicides, treat them with tomatoes before flowering, before the appearance of the first ovary, then again after two weeks to fix the result.

In the future, the use of fungicide should be discontinued and only folk remedies for the control of late blight should be used.

Folk remedies

Late blight on tomatoes at the very beginning of the disease can be destroyed by not such radical methods as the treatment of the garden with fungicidal preparations. Folk remedies for processing tomatoes from late blight, maybe not so effective, but harmless to the human body.

Infusion of straw. A kilogram of rotten hay or straw pour 10 liters of water, add a handful of urea and let it brew for 3-4 days. Strain the infusion and process the tomatoes with it.

Yeast.. Dissolve 80 g of yeast in a bucket of water and pour tomatoes with this solution at the first symptoms of late blight.

Copper wire. Spraying tomatoes from late blight can be replaced by “copper piercing”. How to protect tomatoes from late blight with a copper wire? The wire must be baked on fire or sandpaper, cut into pieces 3-4 cm long, insert such a slice into the stem of an adult tomato bush at a height of 10 cm from the soil and bend the ends of the wire down. Never wrap the wire around the stem!

Some gardeners prefer to wrap pieces of copper wire around the roots of seedlings before planting them in the garden. The fact is that microdoses of copper, enhancing oxidative processes, stabilizing the production of chlorophyll and stimulating oxygen metabolism, strengthen the plant's immunity and make it resistant not only to late blight, but also to other infections.

Iodine. Everyone knows about the antimicrobial effect of iodine; therefore, the method of spraying tomatoes with a milk-iodide composition is widely popular among gardeners. For 10 liters of water, one liter of nonfat milk and 20 drops of iodine are enough.

Ash solution. This treatment is carried out in three stages: as soon as the seedlings are accepted and grow, before the flowering of tomatoes and immediately before the appearance of the first ovaries. In 10 l of water add half a bucket of wood ash, insist for three days, stirring occasionally. When the composition settles, the liquid must be drained, its volume brought up to 30 l and 30-35 g of liquid soap added to the composition.

Serum. Processing tomatoes from late blight with whey from yogurt also gives good results. Dilute the serum in a ratio of one to one with water and from the first days of July spray the tomatoes at least every day.

Prevention

Prevention of late blight on tomatoes in the open ground. Dissolve a glass of table salt in 10 l of water and treat with this brine the spilled but still green tomatoes - the composition forms a film on the fruits that protects them from infection.

Agrotechnical techniques. If you follow the agricultural technology of the culture, you can reliably protect your tomatoes from late blight. Here is a list of activities that serve this purpose:

Prevention in the greenhouse. Phytophthora on tomatoes in a greenhouse is almost a more frequent guest than on beds in the garden. Prevention of late blight in the greenhouse should begin with the disinfection of the room. Before planting seedlings, sanitize the greenhouse: rinse off dirt, cobwebs, remove plant debris.

Fumigation can be used to disinfect the greenhouse: put a piece of clean wool in a bucket of burning coals, place the bucket in the greenhouse and tightly close all windows and doors for a day.

Instead of tobacco ash powder, it is possible to use a solution of Baikal EM, Radiance or Phytosporin preparations for room treatment in accordance with the manufacturer's instructions.

In greenhouse conditions, it is better to use drip irrigation to moisten the soil, connecting a special hose to a container of warm water in order to gradually saturate the soil with moisture throughout the day.

Do not forget to regularly air the greenhouse and do not allow a large amount of condensation to accumulate in the film greenhouse.

If phytophthora still gets on your tomato bed, tune in to a long and stubborn struggle - phytophthora just does not give up.

How to deal with folk remedies for late blight on tomatoes

Experienced gardeners warn that it is best to give preference to those varieties of tomatoes that have increased resistance to fungus.

The most favorable period for the activation of late blight on tomatoes is rainy days. Humidity, as well as sharp fluctuations in day and night temperatures lead to unpleasant consequences. So, the energetic propagation of fungi begins and the defeat of all plantings of tomatoes.

Organic Remedies

You can always buy in the store drugs that neutralize the causative agents of fungal diseases and specialized pesticides.

But not every gardener approves the use of synthetic fungicides in their area, preferring proven measures. These include the following:

1. garlic;
2. mullein infusion;
3. ash.

In order to defeat this ailment, you need to do prevention every year. For example, summer residents spend spraying tomatoes at the stage of their planting in the ground. And solutions can be prepared independently.

Processing with a solution of garlic. This is the main enemy of fungal infections that affect plants. The odorous vegetable is a natural and high-quality fungicide that actively suppresses the development of microorganisms.

Unique properties are due to the presence of biologically active substances, such as sulfur compounds, volatile and other components. Both garlic heads and shoots are used to prepare solutions.

A simple and effective infusion made from garlic is made according to an old recipe:

Mullein tincture. This is an affordable and well-known to many plant nutritional supplement that can be used against fungus, they should plan treatment in June. It helps to strengthen the immunity of plants, increase their productivity.

In order to protect tomatoes from late blight, pour 400 g of humus with cold water in a bucket. Now the product should be infused in a closed container for at least 4 days, periodically mix the mixture. The finished solution should be filtered and diluted with water in a ratio of 1:10.

For a long time, summer residents use ashes to combat late blight. This effective folk remedy for can be applied in two ways.

Dusting with ash. For example, it is allowed to generously sprinkle soil on the aisles and beds, a week after planting tomatoes. Reprocessing is repeated during the development of the ovaries.

Watering a solution of ash. Dilute 200 g of raw material in 5 liters of water, then infuse the mixture for 3 days, periodically stirring the liquid. Next, add another 10 liters of water and 15 g of laundry soap to the solution. It is necessary to start processing from the moment when the plants are fixed on the bed, as well as before flowering and after the appearance of the ovary.

Chopped grass must be poured with cold water, and then add the same amount of hot (heated to 60 ° C). Infuse the mixture for about 2 days, and then strain it by adding 1 g of potassium permanganate. You can use this tool at any stage of tomato development due to its safety.

Other drugs

In the bins of the gardener are drugs that can save the crop from progressive late blight.

The list includes the following medicines:

• iodine;
• Trichopolum.

Ordinary iodine is actively used by gardeners to stimulate the formation of ovaries, accelerate the formation of fruits and resist a dangerous disease caused by fungi.

Iodine solution. It is important to know that iodine treatment is carried out in mid-June, it can be combined with spraying with copper sulfate and potassium permanganate.
Mix 20 drops of 5% with 5 liters of pure water. First, you can carry out treatment with iodine, after 7 days - vitriol and potassium permanganate.

Such a tool is used to treat seedlings for prevention. Experienced gardeners also leave for 2 days a mixture of water with kefir, which kills fungal spores.

Trichopolum. The drug is available in the form of tablets and is suitable for combating fungal diseases.

Gardeners, as a rule, are diluted in 5 liters of water to dilute 4-6 tablets of the drug, thoroughly mixing the liquid.
With a solution, you need to water the tomato bushes 2 times a month.

Efficiency

Proven measures help fight late blight, however, they will not save you from intensive damage to the bushes by infection.

Folk remedies are a high-quality prevention and an effective method of dealing with minor foci of phytophthora. It is important to know that all types of processing should be performed only after sunset and in dry weather.

Upon completion of the harvest, the remains of the plants are burned, and the land is carefully dug up.

What folk remedies will help save tomatoes from late blight?

Late blight is a common disease among nightshade, which cannot be started if you do not want to be left without a crop. Folk remedies for late blight on tomatoes can help out no worse than chemicals. With their help, you can prevent the development of the disease or eliminate the problem with minimal losses.

A culture can become infected at any moment, but the disease is usually asymptomatic and begins to progress in conditions favorable to it. The latter include cold weather and high humidity. Ideal conditions for the development of late blight are:

Phytophthora infection can occur due to fungal bacteria remaining in the soil. Probably their accumulation on garden tools, on the walls of greenhouses, on the remains of organic matter. Tomato seeds themselves may be affected.

Signs of late blight:

• the appearance of black spots on the edges of the leaves;
• the leaf begins to darken, after it dries and falls off;
• spots cover other parts of the plant: the stem, and then the fruits.

How to protect tomatoes from late blight? It is impossible to completely protect the plant from the spread of spores, but there are a number of preventive measures that can reduce the risk of developing the disease.

Prevention

Experts have identified how to protect tomatoes from late blight. It is necessary to eliminate favorable conditions for the development of a colony of fungal spores. Preventive measures should begin from the moment the seedlings are planted in the ground.

Prevention of late blight on tomatoes includes:

1. Disinfection of garden equipment, including the processing of the walls of the greenhouse.
2. Increasing soil acidity. You will need to make a small part of humus or peat if the soil is unnecessarily bred.
3. Acquisition of disease-resistant seeds.
4. Planting tomato seedlings in areas where cultures previously not affected by late blight lived. It can be legumes, onions, beets, garlic, cucumbers and others.
5. Water in the morning, while choosing sunny days. So the moisture evaporates faster, and the humidity level will be normal.
6. Avoid dense plantings, use trellises and timely pinch tomatoes to improve air and lighting access.
7. Fertilize on time.

What can help?

If phytophthora progresses on tomatoes, how to deal with folk remedies? This question is asked by summer residents who prefer not to use chemicals in their garden. Years of experience in growing tomatoes made it possible to find out how to get rid of late blight on tomatoes with the help of folk remedies.

The first treatment should be carried out after transplanting seedlings, and then during the budding period.

Each subsequent spraying is repeated after 10-14 days. In general, for the summer season, 4-5 procedures are required. A good time for spraying is morning.

Common folk methods of struggle

Copper wire from late blight on tomatoes is used only as a preventive measure. A sufficient copper content in the plant is believed to prevent the propagation of harmful spores. To do this, take a piece of wire and cut it into pieces 3-5 cm long.

Yeast is a common treatment. You will need to mix 100 g of yeast (live) with 10 l of water. The mixture is sprayed with tomatoes.

You can prepare a solution of garlic and manganese. The leaves, stems and the garlic itself are chopped and poured, 100 g of gruel will require 1 cup of boiling water. After a day, the mixture is filtered and diluted in 10 liters of water, adding a little manganese. The resulting composition is treated with each plant, the procedure is carried out 4 times per season.

The following composition includes whey or kefir and water in equal parts. The mixture can be processed bushes daily, but should only begin in the month of July. If it was not possible to prevent the development of the disease, characteristic brown spots became visible on the leaves, then such folk recipes can help:

Iodine from late blight on tomatoes is a proven remedy by many. It is necessary to take 10 ml of a five percent solution of iodine and dissolve it in 10 liters of water. The composition requires spraying all the tomatoes. The procedure must be repeated after 3 days.

It is necessary to mix 200 ml of a 10% calcium solution with 2 l of water, then carefully spray the affected areas of the plant.

Prepare a solution of 1 kg of salt and 10 l of water. Before processing, you will need to remove all diseased parts of the plant, and then spray the tomato bushes. The solution forms a thin film on the surface of the leaves, stem and fruits, which prevents the further development of the disease.

Pharmacy Trichopol can also help in the fight against late blight. It takes 1 tablet to dissolve in 1 liter of water and spray the bushes. The procedure is repeated every 14 days.

Tomatoes are also processed with fungicidal preparations. You can buy Fitosporin, Fundazim, Quadris, Fundazol, Ridomil, Previkur. Spraying with such means should be carried out in accordance with the attached instructions. Processing is recommended regularly if you want to harvest a good crop.

The fight against late blight on tomatoes - the most effective methods

The fight against late blight on tomatoes begins already in the very early stages of growing tomatoes. This aggressive fungal disease can plague most of the crop if no action is taken. It is necessary to fight immediately, with the appearance of the slightest signs of late blight, otherwise it may be too late ...

Causes of occurrence

Phytophthora is a very common and fatal fungal disease that destroys not only tomatoes, but also other nightshade crops (eggplant, potatoes). Most often, the disease manifests itself in cool and damp weather, with heavy rainfall.

But where does this sore come from? Late blight is a fungal disease and it spreads by spores, so the conidia of this fungus are able to remain in the soil, seeds, on the walls of a greenhouse or greenhouse, as well as garden tools.

In addition to weather conditions, there may be other causes of tomato disease:

How to spray tomatoes

Before treating your tomatoes, you need to make sure that the plants really get sick precisely with late blight. And, if this is true, you need to know how to spray tomatoes from late blight. There are not a small number of drugs and folk remedies in the fight against this sore, we will consider the most effective and effective of them.

Spraying with infusions of garlic is very effective, and not dangerous for the future harvest. Such sprinkling is preferably done every ten days from the moment of fruit setting. Take 200-300 grams of chopped garlic, add one gram of manganese (on the tip of the knife), put it all in a bucket and top it with warm water. Let it brew for a day, and only then can you spray the tomatoes.

Iodine and milk fight very well with late blight of tomatoes. In a bucket of water, dilute one liter of milk and add one teaspoon of iodine to it. Mix everything thoroughly and the solution is ready.

Spraying with fungus infusions. Usually, a birch tinder or real tinder is used for these purposes, but other types of tinder can also be used. You need to take 100 grams of the mushroom, chop it with a knife a little and pour a liter of boiling water. After it has cooled, strain and can be used.

With a solution of ash, you can also deal with this ailment. We fill the bucket for one quarter with ash, and completely fill it with warm water. This mixture is infused for three days, after which it is necessary to add grated laundry soap (about 2-3 tablespoons) to it.

When spraying tomatoes, it is necessary to remember that it is advisable to carry them out in the morning when the dew is gone, and the sun will not be so scorching and burning, since there is a possibility of burns in plants.

Prevention

In order to prevent the onset and spread of the disease on its site, timely prevention of late blight on tomatoes is necessary. Preventive measures are recommended to be started from the moment the seedlings are planted in the ground.

In the photo - we pierce the base of the trunk of a tomato with copper wire.

Prevention of late blight on tomatoes will be very effective if you do piercing with copper wire. To do this, it is necessary to pierce through the trunks of tomatoes through the ground itself or simply attach a piece of copper wire to each bush, here as you like. Copper inhibits the development of the fungus.

It is completely impossible to get rid of this sore, but everyone is able to prevent its spread. And remember the most important thing - you need to deal with late blight constantly, and not once a year.

Folk remedies for late blight on tomatoes

How to deal with folk remedies with late blight on tomatoes is a question for almost every summer resident, because tomato is one of the plants that is always present in the summer garden. But to grow a healthy tomato is not so simple, it is susceptible to various diseases.

All summer residents know firsthand about it, but far from everyone knows how to deal with it, and fight successfully. Consider the comprehensive protection of tomatoes from late blight.

First signs

Everyone who grew tomatoes observed a picture of a disease of late blight culture. The leaves of tomatoes begin to be covered first with black dots or they have a black border. Then the affected leaf completely blackens, fades and falls off.

Following the black dots begin to conquer the trunks of the plant, and then taken for the fruits themselves. As a result, the entire crop dies. And most often this happens in rainy summers, since for late blight, humidity is the most comfortable condition.

Like any fungal disease, late blight propagates by spores, and these spores are found everywhere - on the ground, on household supplies (the same shovels), on the surface of the greenhouse, in compost ... It is estimated that spores are transferred from the source of infection as much as 300 km.

It is impossible to avoid the appearance of these disputes, but you need to try to make sure that their number is significantly reduced. And this means that it is necessary to avoid environmental factors and conditions in which late blight develops its strength, “grows fat” and actively multiplies, spoiling the entire crop.

But do not forget about agricultural technology. The most important way to prevent tomatoes from getting late blight is to plant them at a considerable distance from the potatoes. The fungus that wintered on tubers sprouts much faster on potato plantations and then “pounces” on tomatoes. If you separate the beds and carefully collect the potato crop, tomato damage will be much less.

Favorable conditions for the development of the disease

There are certain conditions and substances that late blight likes. This is exactly what needs to be avoided. Here are some of them:

Also, for successful control and prevention of late blight, it is necessary to perform such actions.

Watering tomatoes to carry out only early in the morning, so that until the evening the moisture went into the ground. If the weather is cloudy, it is not recommended to water the tomatoes at all, it is better in this case to make one loosening with a plane cutter and immediately mulch the soil tightly to the stems of the plant.

It is advisable to follow the rules of crop rotation (to plant tomatoes only after certain plants).

Pay special attention to seedling cultivation. To acquire seeds resistant to fungal diseases, to strengthen and prevent diseases of seedlings. For this we use foliar top dressing, mixing stimulants and biofungicides. Well, the seeds are disinfected without fail.

Clean leaves and stepsons as they grow. This improves ventilation and solar heating of plants. When warm, the growth of the fungus stops, and at + 30 ° C the plant completely stops the disease. Therefore, regardless of the weather, be sure to remove leaves in contact with the ground and mulch the soil (this is not a sin to repeat).

But everyone has a different climate, and the fruiting time depends not only on the preparation of seedlings, but also on average daily temperatures after planting. Therefore, such tomatoes do not just get sick, they burn out fantastically quickly from late blight. But there are really stable varieties, for example, "Black Brush" - the plant confidently holds fungal aggression.

There are also so-called fungus-tolerant varieties. For example, the old variety "De Barao". The defeat on the leaves in this case still occurs, but thanks to the immune defense, the dots do not extend to the entire leaf, and the plant stands on the bed with almost green leaves longer.

And super-yielding varieties, on the contrary, seem to be very susceptible to disease. They are programmed for yield, and the full potential of the plants is directed to the fruits. And when the fruit is poured, all the nutrients from the plants are actively redirected to the hands, and the tissues become more vulnerable, as if they are losing support from the biota.

What else to add to late blight resistant varieties? They need to be selected for your climate or greenhouse, and checked in real conditions.It is clear that in the Netherlands some degree of stability may appear, which does not necessarily “work” in our environment. So each summer resident should choose their own assortment of tomatoes.

How to spray tomatoes properly

Spraying tomatoes with special compounds purchased in the store, or prepared independently, is necessary in order to prevent and fight diseases. Such solutions successfully fight the fungus, but one “but” should be taken into account.

Phytophthora tends to adapt to conditions, and it simply “gets used” to the same mixture that is destructive for it. Therefore, they should be changed.

But we emphasize: it is better to combine spraying with mulching, since protecting tomatoes from phytophthora with folk remedies is half the trouble, you need to prevent spores from entering the plants from the ground. And the mowed grass or even the newspapers made it hard to sprinkle overwintered spores from the ground long before the August temperature drops.

How to fight folk remedies

Compositions for the control of late blight, as already mentioned, can be prepared independently, using, among other things, folk methods. Here are some recipes for tomato spray mixtures:

1. Garlic + potassium permanganate. Chop the garlic (more effective in a meat grinder or garlic press), and not only the fruits, but also the leaves and stems are suitable. Cooked gruel is poured with boiling water, in proportions of 100 grams per glass, left for a day. Then the filtered liquid is diluted with 10 liters of water, where a little potassium permanganate is added, and the tomatoes are treated with this composition. The procedure should be carried out 4 times a month, with equal intervals between them.
2. Whey + water (equal shares). Such a solution is sprayed with plants daily. But you can apply only from the month of July. If there is no serum, ordinary kefir is quite suitable.
3. Rotten straw + urea. Rotten straw is poured with water (per 1 kg 10 liters), a handful of urea is thrown. This mixture should be infused for about 3-4 days. You can spray after 14 days.
4. Milk (1 liter with 0% fat content) + iodine (15 drops) + water (10 liters). Spraying 2 times a month. After iodine treatments, do not forget to restore the vital activity of microorganisms - soak the soil with EMkami or Globioma, pour compost.
5. Salt. Diluted with water (1 glass per 10 liters), only green fruits should be sprayed.
6. Ash. It is sprinkled with soil between rows of tomatoes 5 days after planting, and then in the process of fruit set. Ashes are scattered before watering.
7. Yeast. Diluted with water (100 g per 10 l). Sprayed in case of black dots on the leaves of the tomato.

As for purchased drugs, here from phytophthora you can use either Trichopol tablets, sprayed twice a month, or Fitosporin-M, used during the period of fetal ovaries, and then every calendar week.

All these preparations are prepared according to the attached instructions. And Fitosporin can be used not only for spraying, but also added to water for irrigation.

How to process plants in a greenhouse

Important in the fight against late blight is the preparation for the season of the greenhouse, in which the planting of tomato seedlings takes place. After all, it can also be a possible carrier of the fungus (and so it most likely is).

Therefore, they pre-wash the greenhouse, clean it of dirt, dust and last year's plant debris.

But after that you can process all surfaces - both walls and roof in different ways:

If you follow all these simple rules and actions, then it is quite possible to get a healthy and safe harvest of tomatoes. But don’t be upset if you didn’t manage to save the whole crop, because late blight is such an infection that you won’t be aware of one year, and the necessary preventive measures should be taken regularly.