Tomato diseases: treatment, symptoms, photos

Symptoms of tomato diseases

Now let's take a quick look at what types there are tomato diseases Photos and treatments for why leaves curl.

1. Leaf curl most often occurs when normal temperature conditions are not maintained. As is well known, at high temperatures, nutrient breakdown occurs faster than absorption. This starvation leads to plant disease. This is especially noticeable when tomatoes are grown in greenhouses. The roots are in cold soil, and the top of the plant is exposed to high temperatures. For this reason, it is essential to ventilate the greenhouse during hot weather.

2. Curling of leaves downward indicates the plant is affected by bacterial canker. The lower leaves eventually turn brown and dry out, while noticeable ulcers and cracks appear on the stem. If you cut a stem affected by bacterial canker, you'll see a brown ring inside.

3. Leaf curling is also caused by phosphorus deficiency. A sign of this condition is a discoloration of the upper part of the plant. It turns gray-green, and the veins on the leaves turn purple.

4. Curling leaves on tomato plants that are already bearing fruit indicates a zinc deficiency. This problem on young plant leaves indicates a deficiency of boron, copper, and sulfur. Curling upward indicates a potassium deficiency. In this case, the leaves become small, the growing points die off, and the fruit begins to rot.

Methods of control using folk remedies

If you don’t want to during growing tomatoesIf you treat them with chemicals, you can then use simple and inexpensive folk remedies that can help prevent or treat certain diseases.

• Spraying with garlic infusion kills fungal spores. Preparing the infusion is easy. Grind one and a half cups of crushed garlic, including the shoots, per bucket of water. Let this mixture sit for 24 hours, then add 2 grams of potassium permanganate. Spray twice: once before the ovary appears, then every 10 days.
• Spraying with milk and iodine. This method has proven effective, as iodine's antimicrobial properties are well known. It can restore order to tomato leaves and speed up ripening. Add 20 drops of iodine to a bucket of water and mix 1 liter of milk.
• Spraying with ash. This treatment should be carried out three times per season: once when the seedlings are established, a second time before the tomatoes bloom, and a third time after the first fruit appears. Mix half a bucket of wood ash with one bucket of water. Let it steep for three days, stirring occasionally. Then let the prepared solution settle and dilute it to 30 liters, grate 30 grams of laundry soap, and add it to the mixture.

Treatment of late blight

Late blight doesn't spread significantly until mid-summer, but don't let your guard down. It's rare for this insidious disease to pass by and not affect the plant. Many people are familiar with this tomato disease, including photos and treatments. Late blight is a fungal spore that destroys a large portion of the crop each year. The more widespread it is, the more treatments are available to combat it.

Treatment is difficult if disease prevention measures are not taken in a timely manner. What can be done to save the harvest? Tomatoes should be planted in areas where potatoes and tomatoes have not been grown for several years. Any remaining vegetation must be burned. Find out. Which tomato varieties are best? for growing in greenhouses.

The most effective method for combating late blight is treating plants with Bordeaux mixture. It's important to apply the mixture correctly to avoid burning the plant or existing fruit. This treatment should be repeated every 10 days until signs of the disease disappear. Copper oxychloride and other modern methods can also be used.

The main diseases of tomatoes

Tomato leaves themselves have insecticidal properties; even a decoction of them is used to kill pests. However, there are still tomato diseases (photos), and their treatment is essential for a healthy harvest.

Gray-white rot. It is caused by many pathogens and appears when the fruits are picked for ripening. Infected tomatoes spoil very quickly.

White spot manifests itself as small gray-white spots covering the stems, and dark leaf margins. Later, small dots appear. Infected leaves quickly die and eventually dry out. The disease begins at the bottom of the leaves and gradually moves upward. Yields are significantly reduced.

This one tomato disease can be defeated with the help of chemicals: 0.5% copper oxychloride or 1% Bordeaux mixture.

Black spot is an infectious disease that attacks the petioles and leaves of tomatoes, causing the plant stems to become weak over time.

At this time, plants stop growing and if the disease is not treated, the plant will die.

Controlling tomato diseases in a greenhouse

Stem rot, also known as "black leg," is a tomato disease (photos and treatments) that develops quickly in greenhouses. Immediate action is necessary at the first sign of the disease. The disease can completely destroy the lower part of the stem. The affected stem becomes thin, and the plant then has difficulty establishing itself. This tomato disease spreads when the greenhouse has high humidity, not only on the soil surface but also in the air.

To protect tomato seedlings To combat this disease, you should first disinfect the soil and then treat the purchased seeds. It's important to ensure the seedlings don't become too dense. Water them sparingly, and ventilate the greenhouse frequently.

Streaking is a viral disease that affects the entire plant. The disease manifests itself as brown-red stripes appearing on the stem and petioles. The virus is transmitted by the seeds themselves, if they are collected from a diseased fruit.

What control measures are available? It's important to collect seeds from fruits that aren't infected, and to treat them with a potassium permanganate solution immediately before sowing. Follow all greenhouse seedling growing guidelines. As soon as the first symptoms appear, remove infected plants immediately.

Other tomato diseases

There are many diseases that affect tomatoes, most of which are infectious. These tomato diseases, including photos and treatments, and a video clip will show how they can spread and what happens afterward.

Blossom-end rot is an infectious disease. It develops under the influence of excessive moisture evaporation. This occurs when the weather is hot and dry, and the soil is dehydrated. Hard, dry, brown spots then appear on the top of the fruit. These spots penetrate deep into the tomato flesh. The primary method of combating blossom-end rot is proper and regular irrigation and adequate soil oxygenation.

Dry spot (macrosporiosis) is a disease that causes leaf dieback. Dark spots and a black coating also appear at the base of the fruit. Control measures for dry spot are the same as for late blight. Find out. How to grow tomatoes using Maslov's method.

Fruit cracking is not an infectious disease. It can be caused by excess moisture during drought. In this case, the tissue in the fruit wall simply ruptures.

Mosaic is a disease caused by a specific type of virus. It results in crop loss and even death of the plant itself. This disease manifests itself as changes in the color and shape of the leaves. They begin to turn yellow, then wrinkle, curl, and dry out.

To prevent this from happening, the seeds must be treated with a solution of potassium permanganate, and then watered with the same liquid several times a day.

Diseases of tomato seedlings

There are also tomato seedling diseases (photos), and their treatment is very important. In addition to the diseases listed above, there are also less common ones. These are closely related to imbalances in plant nutrition, and the yield suffers as a result. These include nutrient deficiencies and mineral imbalances. Causes may include a deficiency of useful elements in the soil, severe improper seedling planting, or soil conditions that prevent the breakdown of certain elements.

It's important to pay attention to how you use fertilizers. Remember that tomatoes are best fed with chlorine-free mixtures. However, completely eliminating chlorine can disrupt water balance, causing the leaves to droop. To prevent this, add a small amount of table salt when watering the seedlings.

We recommend: How to feed tomato seedlings after transplanting

Root rot is a common tomato disease. It is caused by fungi. This disease manifests itself as wilting of the plant, as the root collar begins to rot. The condition can be corrected by watering the soil with a copper sulfate solution and treating it with products such as "Barrier" or "Zaslon."

As this article shows, all diseases can be overcome; the main thing is to know the right methods to combat them and take timely preventative measures.