Spraying tomatoes with iodine. How to spray tomatoes from phytophthora

Late blight is a fungal disease that mainly affects various varieties tomatoes. On stems and leaves appear brown spots, on the underside of the sheet a weak white coating, still green fruits turn black. This is a disease that can destroy your entire tomato crop in a few days. And this disease, especially in Lately, is found everywhere. Therefore, let's first consider the conditions and causes of phytophthora, and then the methods and ways to combat this disease.

It should be noted that the blackening of tomatoes is not a sign of a specific disease, but a plant reaction to many types of diseases and unfavorable conditions for growth and ripening. Blackening of tomatoes even at the ripening stage can also cause ordinary rot, dry soil or excess moisture, excess or lack of fertilizers, various plant pests and other reasons. But still the most common cause is a phytophthora disease.

The name Phytophthora comes from the eponymous name of the causative agent of this disease - the fungus Phytophthora infestans. It is translated as “destroying the plant”, and fully corresponds to the emu, destroying the organism of the plant into which it enters. Phytophthora infects not only tomatoes, but also other plants of the nightshade family, although it also does not spare strawberries, castor beans, and buckwheat. Tomatoes are close relatives of eggplants and potatoes, which, after tomatoes, are most susceptible to the destructive action of late blight. Therefore, it is not advisable to plant these vegetables in close proximity to each other.

How to process tomatoes from phytophthora?

Both preventive and curative treatment should be carried out in dry and calm weather, and the number of treatments chemicals directly depends on weather conditions of this season. If summer period abounds in rain, spraying should be carried out as often as possible (about five times during the summer). Very effective in the fight against phytophthora will be the constant feeding of tomatoes with agents that strengthen the plant's immunity.

There are both folk remedies and biologically active preparations for phytophthora.

Infusion of garlic with potassium permanganatefrom phytophthora

100 grams of garlic (you can take onions, and arrows, and leaves) are crushed in a meat grinder, poured with a glass of water and insisted for a day. Then filter, dilute with 10 liters of water and add 1 gram of potassium permanganate.

Fungus spores are killed by garlic. The first spraying should be carried out before the formation of the ovary, the second - 10 days after the first. Then, if you spray tomato bushes with garlic infusion every 12-15 days, the result will be

Milk serumfrom phytophthora

Whey from sour milk is diluted with water in equal proportions. Starting from the first days of July, you can spray tomatoes with whey every day. Prophylactic.

Milk with iodine

1 liter of skimmed milk is dissolved in 10 liters of water and 15-20 drops of iodine are added. Tomatoes must be sprayed with this tool every two weeks.

Ash from phytophthora

A week after planting the seedlings, all row-spacings are dusted with ash before watering. The procedure is repeated when the fruits begin to set.

Infusion of rotten straw or hay

One kilogram of rotten hay is poured into 10 liters of water, a handful of urea is added and left to infuse for 3-4 days. Strained infusion is sprayed with tomatoes in 1.5-2 weeks.

Yeast from phytophthora

In 10 liters of water, 100 grams of yeast are diluted and tomatoes are watered at the first sign of phytophthora.

Table salt from phytophthora

1 glass of salt is dissolved in 10 liters of water and large, but still green fruits are sprayed with this solution once a month.
This treatment creates on the leaves protective film, which will contain the infection through the stomata. But! must remember that this is preventive measure, and not a treatment, so first carefully inspect the bush and remove already damaged leaves!

A solution of copper sulfate from phytophthora

For 10 liters of water take 2 tablespoons blue vitriol and once treated plants before flowering.

A solution of calcium nitrate from phytophthora

Calcium nitrate 1 tablespoon per 10 liters of water. The same solution can be sprinkled on the leaves.

"Fitosporin" from phytophthora

Bred according to the instructions. Before planting, dip the seedlings in a solution of phytosporin. The first spraying should be carried out when the first ovaries appear and then spray the plants every 10 days. In addition, you can spill the soil in the greenhouse with Fitosporin solution before planting or add the drug to irrigation water every other time.

Calcium chloride from phytophthora

In case of severe phytophthora damage, diseased leaves should be removed and burned, and the fruits should be sprayed with a 1% solution of calcium chloride (a 10% solution of calcium chloride is sold in a pharmacy in 200 ml bottles. The bottle should be dissolved in 2 liters of water). Especially carefully it is necessary to spray the stalk, as late blight penetrates into the fruit through it.

Finally, plants are treated prophylactically before flowering, as well as when the first signs of the disease appear. Still, it is better to prevent the disease than to fight it later.

Kefir spraying from phytophthora

It's also a preventative. The first such spraying is recommended to be done no later than 10-14 days after planting seedlings in the ground. Then it is desirable to do it weekly. Recipe: For 10 liters of water - 1 liter of kefir, which should “ferment” within two days. Mix thoroughly. Iodine will save from phytophthora

Milky iodine sprays from phytophthora

Well proven method. Moreover, everyone knows the antimicrobial properties of iodine since childhood. He will put things in order on the leaves of tomatoes, and will accelerate the ripening of our tomatoes. Recipe: For 10 liters of water - 1 liter of low-fat milk + 20 drops of iodine

Polypore spraying from phytophthora

Such spraying can for quite a long time restrain the infection of tomatoes with late blight. It is recommended to spray once every 10 days in the morning in quiet and preferably calm weather. It is good to process at the time of fruit set. At the first manifestations of late blight, immediately carry out additional processing. Recipe: For 1 liter of water 100 g of mushroom. Pass the dried mushroom through a meat grinder or chop with a knife. Pour boiling water over (brew), after cooling, strain.

"Copper" piercings from phytophthora

A well-established method patented by German scientists: wrapping the roots of seedlings before planting in the ground copper wire. Our summer residents use copper wire in a different way: they pierce a tomato stalk. Microdoses of copper stabilize chlorophyll, stimulate plant respiration and enhance oxidative processes. This strengthens the plant and makes it more resistant to infection. Attention! This procedure is done only when the stem of the tomato becomes strong! Recipe: Ignite thin copper wire (can be stripped sandpaper), cut into pieces of 3-4 cm. At a distance of 10 cm from the soil, puncture the stem, insert a piece of wire, bend the ends down. Do not wrap around the stem!.

If you want a tomato - buy ... Trichopolum! from phytophthora

Or metranidazole 500 ml - treat 3 times and 1 time with Bordeaux. Everyone knows what a scourge for tomato beds is Phytophthora. According to many amateur vegetable growers, the treatment of tomatoes with pharmacy Trichopolum several times a season completely rids your plantations of late blight and frees you from numerous crop treatments with pesticides. With a solution of 20 tablets of metranidazole at 25 mg (or 10 tablets at 50 mg) per 10 liters of water (the tablets are carefully ground in a small amount of water, and then diluted in 10 liters of water), spray about once every 10 days. If it rained, then the next day, be sure to spray the plants again. I know it's tiring, but the tomatoes are worth it.

Phytophthora - dangerous fungal disease nightshade crops, capable of destroying up to 70% of the crop. In 1845-1849 late blight caused a famine in Ireland that killed a quarter of the country's population. Nowadays, there are dozens of chemicals, problem solving, but their use pollutes the soil and fruits, so many summer residents use folk environmentally friendly means. The easiest option is iodine whey with milk for processing potatoes and tomatoes.

Phytophthora spores are found in seed, soil, and even on garden tool. But the disease develops only under favorable conditions - high humidity and poor ventilation of the bushes (dense planting). Phytophthora usually appears in the middle of summer on well-grown bushes, when hot days alternate with cool nights. The resulting condensation, along with rain and a fairly high daytime temperature, contributes to the development of the fungus.

Symptoms: Hard brown spots of arbitrary shape appear on the leaves and tubers of potatoes. After some time, the leaves dry up and curl, and the tubers begin to rot. Phytophthora spores spread very quickly, in 10-15 days one diseased bush can infect the entire plantation. When a disease is detected, it is necessary to act as quickly as possible.


Leaf affected by late blight
infected tuber

Technology of iodine treatment with milk

1. Cut off all the affected leaves, and also the fruits on the tomatoes, in order to slow down the spread of late blight.

2. Cook saline solution 10% (1 kg of salt per 10 liters of water). Spray the bushes with a solution. Salt will create a thin film on healthy leaves that prevents infection. You can move on to the next step in a couple of hours.

3. Add 15 drops of iodine and 1 liter of skimmed milk or kefir to 10 liters of water. Mix well.

4. Spray the bushes every 14 days, starting from the ovaries and ending with the soil under the bushes. Do not spray flowers!

5. Repeat the procedure until harvest.

The disadvantage of the method is that in rainy weather the serum is quickly washed off, the effectiveness drops sharply.

In greenhouses, for the prevention of late blight, crystalline iodine is used, which is sold in a pharmacy. When the first signs of the disease appear on early potatoes iodine is tied in gauze knots (1 gram or a quarter of a teaspoon), the knots are placed in the end transoms of the greenhouse (1 knot for each transom). After 20 days, the iodine evaporates, and the draft spreads it throughout the greenhouse. Alternative option- place open bottles of alcohol iodine in the corners of the greenhouse.

And others as well as quality .

Let's talk about its benefits for your site and its use in the fight against late blight.

Useful properties in the garden

There has long been a tendency to apply top dressing to cultivated plants to protect them from disease, to stimulate their growth and development. Sometimes these drugs can be as harmful as they are helpful. same with correct application absolutely harmless. This is true for both humans and plants.

Important!IN large quantities iodine can be harmful.

Ordinary iodine is able to increase your yield, improve taste qualities and fruit color. When it is used, nitrogen is better absorbed by crops, so you can not use it with such top dressing. It can make your garden more resistant to various diseases. The substance is useful for all cultures, but it brings the greatest benefit, of course. They really need extra, and also get sick most often. Processing tomatoes with iodine is an effective remedy for late blight.

Causes and signs of the disease

Just like humans, cultures can suffer from iodine deficiency, which can lead to various problems and diseases. Its deficiency affects the immunity and development of the plant.

Usually, the need to add a substance is indicated by appearance. Signs may be a significant reduction in yield and frequent diseases:,.

Did you know?In tomatoes a large number of serotonin, so they are able to perfectly cheer up.

Speaking about the most striking one, it should be noted that there can be a lot of reasons for its appearance. This is a fungal disease, so almost all the prerequisites for its appearance are the same as for a regular fungus:


Greenhouse use

Based on the considered causes of the manifestation of the disease, it can be determined that the fungus will feel great, since air practically does not penetrate there, and condensate on the walls provides optimal humidity.

For which plants

It is used from, for fertilizer and as an antiseptic disinfectant, both on and on,. It is useful for , for , and .

How to prepare a solution

Spray solutions are different. Let's see how to cook them properly.

When getting rid of phytophthora is very effective undiluted with iodine. It is important to remember that if you do not get sick, then you can only add diluted liquid.

The undiluted solution is prepared in the following way: 10 drops of iodine are added to 10 liters of serum and mixed very carefully.

It is diluted as follows: for 10 liters of water there should be 1 liter of solution - if you apply it under the roots, or 1 liter of solution for 3 (or more) liters of water - if you spray.

Not less than effective tool from late blight is considered a solution and iodine. They need every two weeks. To prepare it, you need to mix 10 liters of water, 20 drops of iodine and a liter of skimmed milk. All this must be mixed well.

Spraying rules

Spray in the early morning or evening. At the same time, it is necessary to try so that the liquid is sprayed very finely when spraying - it looks like fog or a cloud. Don't try to over-moisten the plant.

Top dressing of tomatoes with iodine solution

The first feeding with solutions should be done when

Tomatoes, like many other vegetable crops, can be grown in open field and in a greenhouse. Immediately after planting seedlings, problems are not observed. The plant perfectly takes root, develops, forms shoots and fruits. But as soon as summer comes, everything changes dramatically. In summer, caring for tomatoes is quite difficult. This is due to the fact that the weather is constantly changing from hot to cool. And if the summer is rainy, then you need to be prepared for the fact that the plants will be affected by such a dangerous disease as late blight. But you can get ahead of it if you take care of prevention in advance and carry out iodine treatment.

Useful properties of iodine against late blight on tomatoes. How to use the tool and process the garden crop

The most important advantage of iodine is its safety for humans and plants, if used to protect a tomato in a small dosage. Since the solution of the chemical preparation is actively involved in biological processes, it has a positive effect on tomatoes. Due to iodine, nitrogen metabolism improves, so that it can become worthy replacement nitrogenous fertilizers.

Processing tomatoes from late blight with iodine

In addition to fighting ailments, iodine can be an excellent subcortex to increase productivity. If you water the soil with the prepared solution, then it will not spoil its properties in any way. Iodine solution effectively and quickly copes with harmful microorganisms and fungi in the ground and on the surface of tomato seedlings. Thus, the ripening of tomatoes will occur much faster.

On the video - processing tomatoes from late blight with iodine:

Iodine in the composition of the solution against phytophthora increases resistance to infection and quickly eliminates the first signs of the disease. At the same time, it contributes to the excellent ovary of future fruits.

It is enough to carry out one treatment of the plant immediately after the detection of symptoms or to carry out prophylaxis in advance in the first month of summer.

Spraying in the open field

It is necessary to use the iodine solution for the first time immediately after the plant has been planted in the garden. If you use iodine as a fertilizer, then you just need to dilute it in water and water the plants under the root of each bush. Approximately 5 drops of the drug fall on 1 liter of water.

But to combat phytophthora, you should use a slightly different recipe:

  1. Take 10 liters of water. In this case, its temperature should be about 20 degrees.
  2. If you use a liquid that is hotter or colder, then you will not get the desired effect.
  3. Place 35-40 drops of iodine in water. After that, add 1 liter of serum. If you can’t find this fermented milk product, then you can use milk.
  4. Place in a solution of 20 ml of hydrogen peroxide.

It will also be interesting to learn about and what you can do with this problem yourself.

On the video - processing tomatoes from phytophthora in open ground:

After completing all the activities, a solution should be obtained that simultaneously solves several problems. When using it, you can reduce the likelihood of developing an ailment and protect the plant from pests. In addition, this treatment greatly increases the yield of seedlings.

How to process a tomato in a greenhouse

Growing tomatoes in a greenhouse is much easier. It would seem that no extraneous influences from outside can harm vegetable culture. But it turns out that tomatoes that are grown under a film can most often become infected with late blight. This occurs mainly due to increased moisture. After processing vegetable bushes with iodine solution, it is necessary to regularly ventilate the room, saturating it with fresh air.

It is necessary to use iodine solution for tomatoes grown in a greenhouse less often than in open ground. Then it is possible to prevent an excessive concentration of iodine in the soil.

But foliar top dressing in a greenhouse should be done in September. If indeterminate tomato varieties are used, then they grow under the film and bear fruit until the first frost. And since the weather in September is cool, this increases the risk of phytophthora.

In addition to the use of an iodine solution, you can arrange vials of iodine in the greenhouse in open form. Thus, without any treatments in the air, a certain concentration of iodine vapor will always be maintained. But for maximum results, it is worth combining this method with spraying.

To combat late blight in a greenhouse, it is worth using a solution of iodine dissolved in milk. Milk product positively affects the soil, as it is saturated with organic substances. In addition, they improve the resistance of plants to diseases and various pests.

To get a solution, you need to take 1 liter of milk, add 15 drops of iodine to it. Dilute the resulting composition with 4 liters of water, mix everything and use to water each bush.

To get the maximum result from this procedure, you must follow a number of simple tricks:

  1. You should not apply such fertilizer for tomatoes grown in a greenhouse if 10 days have not passed since they were planted. It is important to wait for the young plants to take root and get a little stronger.
  2. IN medicinal purposes add iodine with milk every 3 days for a month.
  3. As a preventive measure, treat once a quarter.

But what to process during flowering, and what chemicals can be used, will help to understand this

Phytophthora is a dangerous disease that very often affects tomatoes. As a result, the fruits do not have time to ripen, as they form dark spots, and inside the pulp begins to rot. It is necessary to fight this disease immediately after the first symptoms are detected. Iodine solution effectively copes with the task. In addition, it will become an excellent top dressing for plants, which will positively affect the yield.

Late blight is a real scourge of nightshade. Dealing with this disease with chemicals is easier than treating tomatoes from phytophthora folk remedies. But the fruits will grow after such treatment is not very useful. Those who want to get a healthy harvest and defeat the disease should heed the advice of experienced summer residents.

Late blight is a real scourge of nightshade

Late blight is a fungal disease of plants. can be found everywhere: on seeds, in soil, in plant remains, on the garden tools etc. Most of all, the fungus loves cold and humid weather, so the disease usually begins to develop under these conditions. Inexperienced gardeners attribute everything to a cold snap or excessive humidity and begin to cover the tomatoes with a film, “saving” them from death.

It is unlikely that it will be possible to cure a diseased plant by changing the conditions of detention. But the disease can be prevented. If you know favorable conditions for the development of the fungus and try to get rid of them, then a good prevention of late blight on tomatoes will come out.

Fungus, disease-causing tomatoes, especially likes:

  1. lime soil. Many summer residents in order to combat hyperacidity soils add excessive amounts of lime to the ground, which attracts another problem. The fight begins not with the acidity of the soil, but with late blight on tomatoes.
  2. Lack of air. Cramped greenhouses with thickets of vegetables are an excellent place for the reproduction of fungus and the development of tomato disease. And the increased humidity after watering only exacerbates the situation.
  3. Weak plants. Various diseases weakened bushes are most susceptible. If the tomatoes lack any useful elements, then their chance of getting phytophthora is much higher than that of healthy plants.

It is unlikely that it will be possible to cure a diseased plant by changing the conditions of detention.

You can notice diseased plants by the leaves. They are stained with inside, then turn brown, curl and dry. Tomato shoots turn black and die. Soon, the fruits themselves, if any, are also affected. Black spots form on them, which gradually increase in size.

Disease prevention

Vegetable disease is quite preventable if effective measures are taken. preventive measures. It is necessary to start prevention at the stage of sowing seeds. Choose for planting those varieties and hybrid varieties that are resistant to late blight. Plant seeds according to planting rules. The same goes for seedlings. Don't plant too densely. Do not ignore crop rotation rules. Bushes grow strong and healthy if planted after certain vegetables. For tomatoes, excellent predecessors are cabbage, carrots, green onion, pumpkin. It is better not to plant tomatoes after nightshade crops, as plants of the same family suffer from the same diseases.

If vegetables grow in open ground with an excess of lime, then peat and sand are added to the beds to normalize the natural balance of the soil. morning and evening under the root, avoiding contact with the leaves. In the rainy season, it is better not to water the tomatoes at all. Various top dressings will help the plant become strong. Such vegetables will be able to better deal with late blight.

You can notice diseased plants by their leaves.

In order to combat infection, you can additionally treat the tomatoes with a special solution. In a bucket of water, a liter of kefir is bred, which has fermented for several days. Seedlings are sprayed with a solution 2 weeks after planting, and then the treatment is repeated once a week. The poured green fruits are treated with saline. A glass of salt is dissolved in a bucket of water and the plants are sprayed. The salt film will protect the fruits from phytophthora.

Preventive work to protect greenhouse tomatoes it is necessary to start with the disinfection of the greenhouse itself: you need to remove the dirt, excess soil, cobwebs, the remains of old plants. Fumigation of the greenhouse with burning coals helps well. They are poured into a bucket and a piece of wool is placed there. The bucket is left in a closed greenhouse for a day. Also, the greenhouse can be dusted with a mixture of tobacco dust and wood ash taken in the proportion of 2 cups of dust per bucket of ash. True, you will have to carry out this procedure in a mask.

How to avoid late blight (video)

home remedies

If the disease has already affected the tomatoes, the struggle will be long and difficult. However, saving vegetables is quite possible. The main thing is not to waste time and not to start the disease, since the treatment is more effective on initial stages. Selling in stores today chemicals, eliminating late blight of tomatoes. It is easier and faster to treat them, however, toxic substances that defeat the disease also enter the fruits. Fortunately, there are many equally effective and absolutely safe home recipes to help fight late blight.

Ordinary iodine is popular among gardeners, because it is an excellent antimicrobial drug. It is enough to add about 20 drops of iodine to a liter of skim milk and dilute this mixture in a bucket of water. Spray tomatoes as needed.

Dairy products are widely used in the processing of tomatoes. You can often read the advice of summer residents who are treating with folk remedies, starting with the words: “I process tomatoes with fermented kefir, milk, yogurt ...”. All of these tools really work. For example, yogurt whey, diluted with water in a ratio of 1: 1, can be sprayed on tomatoes daily.

Wood ash is not only a useful natural top dressing horticultural crops, but also excellent remedy against late blight. Half a bucket of ash is diluted in 10 liters of water. The solution must be infused for 3 days. Then add 10 g liquid soap and spray the resulting product with tomatoes in three stages: a week after planting the seedlings in the ground, before flowering and before the formation of ovaries.

At the first symptoms of late blight, a yeast solution helps well. In a bucket of water, dilute 80 g of yeast and water the plant. Garlic-manganese tincture disinfects tomatoes. Approximately 100 g of garlic is added to a glass of water and infused for a day. Then the tincture is filtered, diluted in a bucket of water and 1 g of potassium permanganate is added.

Wood ash is not only a useful natural top dressing for garden crops, but also an excellent remedy against late blight.

Sometimes folk remedies for phytophthora seem not quite ordinary. Many will be surprised by such a procedure for treating tomatoes as piercing with copper wire. It is cut into segments 4-5 cm long, cleaned or heated over a fire. Each such segment must be inserted into the stem of the plant at a level not lower than 10 cm from the ground. The ends of the wire are bent down, but not twisted around the stem. Microdoses of copper entering the plant stimulate the oxidation process, increase immunity and resistance to diseases. Some growers even wrap copper wire around the roots of seedlings before planting them in the soil.

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