Late blight is a fungal disease that is familiar to absolutely every summer resident. The disease destroys crops every year and, if not treated in a timely manner, can affect the entire area. Many summer residents mistakenly believe that late blight appears only on tomatoes. This is wrong. A fungal disease can occur on almost all vegetables. In order to protect plants from fungus, special preparations are used. The rating of the best remedies for late blight for 2022 has collected the most effective fungicides that have universal use.
8 Profit Gold
The drug has a wide range of effects, shows high results in the fight against late blight, gray and white rot, powdery mildew, fomoz, and fungi. Such a high result is achieved thanks to the main ingredients in the composition - famoxadone and cymoxanil. After applying the product, they create a protective shell that prevents the penetration of pathogenic bacteria from the outside. Cymoxanil penetrates deep into the tissues of the microorganism and destroys it from the inside. The most interesting thing is that the protective layer also envelops new branches, preventing them from becoming infected.
Before work, prepare the solution according to the instructions, without exceeding the norms. The granules are diluted with water in the required ratio, for tomatoes and potatoes - 1.5 g per 2.5 liters of water. The finished mixture is poured into a spray bottle and applied to plants by spraying. One package weighing 1.5 g is enough to treat an area of 25 m2. The fungicide begins to act immediately and retains its antibacterial ability until the problem is completely eliminated. The drug is equally effective on different varieties of tomato and potato. It is not afraid of precipitation, it is resistant to washing out. The treatment can be repeated 3-4 times during the growing season.
Tomato varieties resistant to late blight
There are no tomatoes that do not suffer from late blight! Don't believe what it says on the seed packets. Conscientious producers can only process the seeds to eliminate the risk of fungal spores being transferred to them. The rest is just a marketing ploy.
That is why when asked which tomatoes are not afraid of late blight - there are none! There are only early-ripening varieties of tomatoes that manage to grow and ripen before this very disease appears in your garden beds.
A huge number of tomato varieties with photos, descriptions and reviews from gardeners in our Tomato Catalog. Enjoy watching.
7 Baktofit
An effective antifungal and antibacterial drug. Available in three versions - powder, suspension concentrate and small packaging for private use. The drug is a contact drug. The active substance, Bacillus subtilis, is an antibiotic that successfully inhibits pathogenic pathogens. These include late blight, rot, bacteriosis, oidium, and powdery mildew. It is used as an independent product and does not need to be mixed with other drugs and fertilizers. After spraying, harvesting is allowed after 72 hours.
You can soak seeds in the product to disinfect them before planting. It is enough to keep them in Baktofit for half an hour. The manufacturer recommends soaking the root system before planting seedlings in the ground. This will help enhance protection against bacterial spores. Leaf processing should be done on both sides. The standards for preparing the solution are indicated in the instructions and depend on the purpose. Fungicide consumption for soaking seeds is 1 ml per 0.5 liter of water. For late blight for spraying - 20 ml per 10 liters of water. Repeat the procedure no more than once a week. The manufacturer allows up to 8 treatments per season, since the degree of resistance is low. But in case of severe infection, it is better to alternate the drugs.
Ordan
Ordan, SP (12.5 g)
Highly effective fungicide against diseases of tomatoes, cucumbers and potatoes. Package 12.5 g.
More details
Description
Active ingredients: copper oxychloride and cymoxanil. The drug consists of two substances with different mechanisms of action. It has protective, preventive and eradicating properties.
It is used to protect potatoes from late blight, Alternaria blight and downy mildew. Spraying with a fungicide heals parts of the plant damaged by the disease, inhibits and eradicates infectious agents.
Advantages:
- does not cause addiction in pathogens;
- improves the state of culture;
- destruction of infection at all stages of growth;
- double impact effect;
- acceptable price;
- harmlessness to the environment and humans;
- the active components of Ordan are completely decomposed and removed from the soil within a season.
Flaws:
- large-scale processing requires a large amount of powder;
- toxic to fish; processing near water bodies is prohibited.
Use of the drug
The fungicide is produced by a Russian manufacturer in bags of 12.5 and 25 g, boxes of 1 and 3 kg, bags of 15 kg. It is more convenient for summer residents to purchase bags. To prepare a treatment solution for late blight, 25 g of powder is dissolved in 5 liters of water. Working fluid consumption: 5 l per 100 m2. Treatment is carried out either early in the morning or in the evening in calm weather in thick clothing, a respirator and gloves. The solution is prepared immediately before use, shaken vigorously, without ceasing to repeat the shaking when spraying. 2-3 sprayings are carried out per season. The last treatment is carried out no later than three weeks before harvest.
The peculiarity of the application is that treatment cannot be done during the day in order to prevent the formation of sunburn on the leaves. The drug should also not be applied to a wet plant after dew.
6 Consento
The active ingredients of the drug are fenamidone and propamocarba hydrochloride. Thanks to the first, the product binds to the surface of the plant, and it is evenly distributed over it. The second helps to systemically influence bacteria, sharply worsens their mitochondrial respiration, disrupts the synthesis of substances, which does not give them any chance of survival. A combined action fungicide that shows high effectiveness on tomatoes, onions, cucumbers, and potatoes. Able to protect against pathologies mixed with late blight. Increases immunity, enhances growth, and is used at different stages of plant development. Shows good results in destroying fungal spores.
Produced by the manufacturer in the form of a suspension, bottled in containers of different volumes. The smallest bottle of 50 ml is intended for small garden areas. Large bottles up to 0.5 l are convenient for use on an industrial scale. Before treatment, prepare the solution according to the instructions, after wearing protective equipment. You need to spray carefully, not forgetting the back of the leaves, stems and soil. After this, an invisible layer will appear on the plant, which will prevent bacteria from penetrating inside the nightshade. The frequency of treatment is every 10 days when late blight is detected and 2 weeks when fungal infection is detected.
Prevention of late blight
Competent prevention is the best way to protect vegetable crops from late blight. It is best for summer residents to choose tomato varieties with high resistance to fungal infections for planting.
Unfortunately, there are no hybrids or varieties that are not susceptible to late blight, but there are species that easily tolerate this disease. These include Zhavoronok, Grotto, Otradny, De Barao, Yagodka, Budenovka, Metelitsa.
Basic measures to prevent late blight on tomatoes:
- When growing tomatoes in a greenhouse, it is necessary to regularly disinfect all surfaces and elements of the greenhouse. It is also necessary to disinfect it, and once every 3-4 years the fertile soil is completely changed.
- Increased soil acidity is one of the factors provoking the development of late blight. Therefore, for prevention purposes, do not forget about soil deoxidation. It can be done using lime.
- When planting seedlings in the garden, add 3-4 tablespoons of sand to each planting hole.
- Follow the rules of crop rotation - do not place tomatoes in beds where potatoes, cucumbers, beets, carrots and tomatoes were grown. This site cannot be used for at least 3-4 years.
- Tomatoes should be watered early in the morning or in the evening, after sunset. When watering, you must ensure that drops of moisture do not fall on the stems and leaves of the plant.
- After each watering and rain, the soil around the tomato bushes needs to be loosened - this will improve oxygen access to the roots of the vegetable crop.
Late blight is one of the most dangerous and common fungal diseases of tomatoes. This disease can lead not only to complete loss of the crop, but also to the death of all tomato plants. Treatment of late blight must begin immediately after identifying the first signs of damage, using modern industrial preparations and effective folk remedies.
5 Cuproxat
A preparation of inorganic origin for the contact group of fungicides. The main component is copper sulfate pentahydrate. Available in the form of a suspension concentrate of 34.5%. Recommended for effective processing of tomatoes, zucchini, cucumbers, potatoes, and beets. Serves as reliable protection against late blight, scab, powdery mildew, and brown spot. Shows instant results in killing bacteria without subsequent recurrence of the problem. It is resistant to high humidity. It is considered an environmentally friendly product. Shows high efficiency at temperatures above 0 degrees. Use according to the instructions completely eliminates the toxicity of the drug. Retains chemical activity against pathogenic microflora for a long time.
The solution must be prepared immediately before treatment. To do this, first shake the container, open it, take out the required amount of product and transfer it to a sprayer half filled with water. Then add water to the required volume. It is best to carry out disinfection during daylight hours in the absence of rain in the next 3 hours after work. Apply an even layer to the above-ground parts of the plant. Consumption is calculated depending on the crop being processed: tomatoes, cucumbers - 50 ml per hundred square meters, beets - 70 ml per hundred square meters. For protection during the procedure, you must wear a respirator.
The best remedies for late blight
Profit Gold
Rating: 4.9
The leader in the ranking among the best medicinal products is a drug whose effectiveness is confirmed by both experienced summer residents and professional agronomists. Two active substances each perform their own task. Famoxadone forms a dense film on the surface, eliminating the possibility of spore penetration. Cymoxanil penetrates inside and quickly spreads throughout the system.
This cutting-edge remedy eliminates the signs of diseases in the very last stages, when other drugs are no longer effective. It works in any weather: rain, strong wind, low or high temperature. Water-soluble granules quickly mix with liquid, forming a homogeneous consistency that does not clog sprayers and is easy to use.
According to reviews, this is the most effective drug against late blight. It treats even latent infection of stems, does not affect the environment, is safe for humans if the manufacturer's recommendations are followed, and does not allow fungus to multiply in new plantings.
Advantages
- innovative remedy for late blight;
- high rain resistance;
- instant destruction of infection;
- low consumption rate;
- convenient release form.
Flaws
- not detected.
Ridomil Gold
Rating: 4.8
The second place in our rating is deservedly occupied by a product that helps protect both private gardens and agricultural plantations from infection by pathogenic fungi and crop loss. It was created on the basis of advanced scientific developments and is a drug of the latest generation. The solution is used on grapes, potatoes, onions, tomatoes and cucumbers grown in open ground.
The granules are dissolved in water and the crop is sprayed in the morning or evening, preferably in calm weather. The effect persists even in conditions of high humidity, including rain and watering. The solution spreads throughout the internal system and penetrates the rhizome, stem, leaves and fruits.
Late blight remedy is compatible with many pesticides. It does not pose a danger to humans and domestic animals. Half an hour after treatment, a high level of moisture resistance is achieved. Many noted that Ridomil Gold protects even new growths that have not been irrigated with a fungicide, and is able to cope with the last stage of diseases over a large area of crops.
Advantages
- maintaining and increasing productivity;
- systemic action;
- resistance to precipitation;
- low toxicity.
Flaws
- not detected.
4 Abiga Peak
It is considered one of the best means of protecting plants from pests. It is popular among gardeners in the fight against late blight and fungal diseases. They can safely treat indoor and garden plants, fruit and forest trees, and vegetable crops. The main component is copper oxychloride, which causes a sharp regression in the growth and development of microorganisms, leading to their death. The product is non-toxic to pollinating insects, which allows them to be released onto the treated area after 12 hours. The fungicide is characterized by a high content of active substance in its composition, resistance to moisture, and is economical for large areas.
When preparing the product, you must strictly follow the instructions. First, prepare a stock solution - 50 ml of the drug is diluted in 1 liter of water. Pour it into a bucket of water and mix them intensively. Apply to the plant using special devices with long spray tubes. You can process both a tall tree without using ladders, and low tomatoes without bending over them. All activities are carried out in the absence of wind and rain at a temperature of +9 degrees. It is advisable to use the product for prophylactic purposes. Spray before flowering begins.
What is late blight
Late blight is a fungal disease that occurs on plants as a result of infection with the fungus Phytophthora infestans. When infected, plants become weak and die. Vegetables at all stages of ripening are also affected.
Symptoms of the disease:
- brown spots on leaves and shoots;
- formation of brown spots on fruits;
- gray coating on the leaves;
- fruit rotting;
- the leaves curl and dry out.
Most often, the disease occurs at high levels of humidity. Initially, the symptoms are difficult to notice. However, it should be noted that the fungus develops very quickly. In a short time, the fungus spreads throughout the entire area, damaging the plants.
3 Infinito
One of the most effective modern chemical means of protecting plants from pathogenic microorganisms. Copes well with late blight and powdery mildew. Protects all parts of the plant. Does not have a toxic effect on birds, bees, worms. It is allowed to treat seeds with it before planting. Suitable for plantings of different sizes. Not detected in potato tubers after processing. The protection mechanism is simple: when it gets on the plant, it has a detrimental effect on bacterial spores, which leads to the cessation of the spread of infection. It has a particularly effective effect at the beginning of infection.
The protective effect time reaches 2 weeks. After 2-4 hours from the moment of spraying it penetrates into the plant. It is best to carry out the procedure during the growing season. A solution is prepared at the rate of 15 ml of concentrate per 5 liters of water. It is recommended to start with preventative treatment after flowering. Reapply the product after 1-2 weeks. The maximum number of sprays per season is 4 times. The active substance fluopicolide is not addictive, but for better results the drugs should be alternated.
Folk remedies: how to fight?
Industrial chemicals are not the only way to fight for the health of your beloved garden. Although late blight is indeed very dangerous, traditional methods remain quite effective!
Mulching
It is better to regularly mulch the space around the stems. Mulch retains moisture and nutrients well, but at the same time creates unfavorable conditions for fungus. A healthy microflora is formed in it, and it also protects the plant from night frosts.
Photo: frukti-yagodi.ru
Kefir
Lactic acid is surprisingly very effective against harmful fungi. The method is very gentle and gentle, but weekly spraying of tomatoes is an excellent prevention of late blight. Just dilute kefir with regular, settled water in a ratio of 1:10.
Photo: grizun-off.ru
Copper wire
Perhaps one of the strangest methods is to pierce the stem of a tomato with a thin copper wire. But first, be sure to disinfect it so as not to introduce another infection. The wire is inserted at a height of about 5 cm from the ground, and it literally blocks the path of infection.
Photo: zen.yandex.ru
Garlic
Garlic solution is a universal remedy for the prevention of most fungi and parasites. It contains useful substances that have a positive effect on the plant’s immunity. Prepare a strong infusion of 200 g of garlic per liter and spray the tomatoes with about 150 ml per bush.
Photo: mir-ogorodik.ru
Salt
Prepare the simplest saline solution from a glass of kitchen salt to a bucket of water. Remove all damaged areas from the tomatoes and treat them with the solution. Salt creates a fairly durable protective film on the surface so that late blight spores cannot penetrate and spread further.
Photo: dinhcuongtt1.blogspot.com
Ash
Mix half a bucket of ash with a bucket of water and let it sit for three days in a dark place, stirring occasionally. Strain, add about 30 g of grated soap and dilute with water to 30 liters. Such preventive spraying begins as soon as the seedlings have finally taken root.
Photo: semki.su
tinder mushroom
Dry tinder mushroom needs to be crushed and poured with boiling water in a ratio of 100 g per liter. Spraying is carried out every week and a half, and they effectively deter further infection of tomatoes.
Photo: ogorod-bez-hlopot.ru
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1 Quadris
The main component azoxystrobin belongs to the group of strobilurins. Quadris does not contain the harmful chemical compounds of metal, sulfur, and phosphorus familiar to consumers. Thanks to its unique composition, the product is considered one of the best in its field - it is not deposited in fruits and quickly decomposes into safe components in the environment. Substances of this composition have recently appeared on the market, so the technique of applying them is not familiar to everyone. Before work, be sure to study the instructions for the drug. The drug molecules do not act as bacteria destroyers, but are introduced into them and interrupt the life cycle. They break down into simple substances - carbon, oxygen, hydrogen and nitrogen.
Quadris acts selectively, without damaging plant cells, but completely destroying microorganism spores. It is enough to treat once, and you will get rid of pest problems in the garden for 3 seasons. The duration of action of the drug does not depend on natural phenomena. Remains effective in the temperature range from +4 to +30 degrees. The product interacts well with organic fertilizers, which increases the resistance of plants to external adverse factors. When working, you need to take into account the high toxicity of the product to humans, using protection. Best suited for small agricultural enterprises and farms.
Biological
The action of this class of drugs is based on substances that are not synthesized in the laboratory, but are produced by living organisms - usually bacteria or beneficial fungi. Their main advantage is that they do not accumulate in fruits and are harmless to humans . These include the following drugs.
"Trichoderma veride"
Its action is based on the ability of strains of saprophytic fungi to parasitize other fungi. In fact, this drug kills late blight in the same way as it kills tomato plants. In addition, toxins released by the fungus and natural antibiotics suppress the development of other pathogenic organisms.
The disadvantage of the drug is that the development of trichoderma requires heat (at least +20 degrees) and moisture. At temperatures above +40, the fungus dies.
"Baktofit"
This drug contains cells and spores of Bacillus subtilis, Bacillus subtilis. This bacterium is found in the soil and is therefore absolutely harmless to plants - but the development of late blight is suppressed by the substances it secretes. However, it can only be used as a prophylactic.
Fitosporin
Fitosporin is deservedly considered the best among biological products. It is also based on a strain of Bacillus subtilis, but different from that of Baktofit. As a result, Fitosporin is more effective against late blight.
Like all biological products, it requires heat and moisture. In addition, it needs time for the hay bacillus, when multiplying, to reach its optimal level. It is a hazard class 4 substance, but an allergic reaction is possible. Therefore, when working with it, you should avoid getting the solution on the mucous membranes or skin.
