Tomato plants are known to be vulnerable to many tomato diseases. Fungal, viral, and bacterial issues can wipe out entire crops and orchards in a short time. If they are left uncontrolled, you need to know how to solve and treat these problems.
Unfortunately, there is no cure for many tomato plant diseases. Others are curable in the early stages, but once the disease progresses, it is difficult to prevent. This is why quick identification is important to get rid of any infection in your garden.
Let’s look at some of the most common tomato diseases and how to identify and treat them properly.
10 common tomato diseases
Even if you do your best to prevent tomato diseases, there is a chance that they will show up in your garden. Unfortunately, there are dozens of possible diseases, but most are not common. Here are the most common diseases of tomatoes that you can face in your garden.
Here is the most common fungal infection in tomatoes. This causes the fruit to rot on the tomato plant, but the first sign is small, round spots on the fruit that gradually increase in size and darken in the center.
Anthracnose remains in the soil, and when the infected water is shattered on the leaves by irrigation or rain, it infects the entire plant. Wet weather and poor drainage encourage soil growth.
Spraying your plants with copper fungicides helps protect your plants. Prevention is the best method; Make sure you remove the lower branches and always water the plant base to prevent the leaves from touching the soil.
See our guide to identifying and treating anthracnose.
2. Bacterial Spec
Bacterial spec is a bacterial infection caused by Pseudomonas syringae pv. This causes a decrease in yield and small, dark spots with a yellowish border to develop on fruits and leaves. You can see that these spots are bulging or sunken.
Unfortunately, there is no cure for this bacterial infection. It is most common in cool, moist climates, and it occurs when water splits the soil on the leaves. The bacterial spec also travels by hand and gardening tools, so be sure to use good garden hygiene. Remove infected plants and any debris to prevent spread.
3. Early Blight
Initial smear is caused by soil borne pathogen. Alternansia solani, And this fungus can stick around for years because it grows in soil, even in cold weather. Most early blight cases will not kill your plants, but it causes bull-shaped brown spots on the lower leaves of the plant. The surrounding tissue turns yellow, and eventually, the infected leaves fall off the plant.
In most cases, the plant continues to produce fruits, even as the disease transfers to the plant. Organic fungicides that use copper or Bacillus subtilis Effectively slowing down or preventing the spread of early vision. Bicarbonate fungicides also work.
Preventive measures work well to prevent this fungal disease from infecting your plants. Always keep mulch under your tomato plants to keep them from splattering on your plant!
4. Fusarium wilt
Fusarium oxysporum The pathogen that causes Fusarium wilt, and it is most common in warm, southern regions. In field conditions, the disease kills entire areas of plants.
Symptoms of Fusarium wilt begin at the stem of the doping leaf, and eventually, entire branches wilt and die, but it often begins at the bottom of the plant and progresses upward. If you cut a stem, there will be dark stripes running lengthwise through the stem. Occasionally, Fusarium wilt causes dark cankers at the bottom of the plant.
Unfortunately, spores live in the soil and last for years, and they spread easily, so prevention includes disinfecting everything before moving to your garden. Once it invades your garden, there is very little you can do to control it or stop the spread. You need to remove infected plants and try steps like soil solarization to kill fungal spores for the next gardening season.
See our complete guide on how to deal with Fusarium wilt.
5. Late Blight
Without a doubt, the late carnage instills fear in all gardeners. It is one of the most devastating and deadly tomato diseases you can face, but it is not common, especially for northern orchards. Phytophthora infestans Without a host, cold temperatures cannot survive.
Late blight is a fungal infection that causes irregular shaped, water-soaked, disgusting splits. It starts with the top-most leaves and stems, a way to identify the disease from others. Eventually, the whole stem weeps, turns black, and you can find white spores on the leaves.
Late miles run for miles. Although it is not common, there is very little you can do to prevent or treat it as it moves faster. Remove the plants and burn them to prevent the spread of spores. If you hear of gardeners with late blight in your area, try spraying a fungicide. Bacillus subtilis.
6. Mosaic Virus
The mosaic virus attacks all types of plants, but is one of the most common tomato diseases. It does not kill your plant but greatly reduces the number and quality of fruits you receive. It causes light green and yellow marks on the leaves and matting on the fruits.
This virus enters through cuts in leaves and stems. Since it is a virus, there is no way to treat it. Do not try to apply fungicide; They will not work for viral diseases. Do not save seeds from infected crops and expect better weather next year!
7. Septoria leaf spot
If you find small, round beaks on your leaves, you may develop septoria leaf spot, tomato disease. Septoria lycopersici. The spots have dark brown edges, and they will cover your leaves, which will eventually turn yellow and fall from the plant.
Preventive measures work well to prevent this disease from taking over your garden. Remove tomato plants and debris at the end of the season, moving the locations for disease to overwinter. Cut and destroy the infected leaves, and always disinfect any device that touches the diseased plant.
If your plants become infected with Septoria leaf spots, use an organic fungicide based on copper. They are the most effective!
8. Stemfilium Gray Leaf Spot
The location of the gray leaf affects the leaves of the tomato plant, starting with the oldest leaves, but it also infects the stems. This will not disturb the fruits. Small, dark spots develop on both the top and bottom surfaces of the leaves. The spots are yellowish brown which gradually grow and become brown.
Removing all infected plants and debris helps prevent the disease from spreading in the future. It is most common in cherry and grape tomato plants.
Treatment of this fungal infection is possible with early season fungus. Symptoms disappear as soon as you use a fungicide to get rid of it.
9. Southern bacterial wilt
Southern bacterial wilt is one of the fastest spreading diseases of tomatoes, and once it hits your garden, it is incredibly destructive. It is caused by bacteria Ralstonia Solanearm He is born in the soil, traveling through soil, water, plant debris, tools.
At first, southern bacterial wilt appears as some wilting leaves, but eventually, more leaves wilt and all turn yellow until they wilt and die. If you cut the stems, the disgusting energy comes out, and if you pour the stems into the water, the milky currents come out.
There is no cure for this disease. You must remove the infected plants immediately and discard them. You can prevent disease by pruning tomato plants to increase air circulation and reduce moisture between plants.
10. Verticillium wilt
Verticillium wilt is a fungal infection caused by pathogens. Verticillium spp. Family. This fungus blocks vascular tissue in the plant, causing the leaves and stem to merge. The symptoms gradually increase until the entire plant turns yellow and wilted. If you cut the stem, you will see dark brown discoloration.
Once the fungus infects the soil, there is nothing you can do to prevent the infection that year, so the best thing you can do is prevent it from spreading in future years. Soil solarization kills moldy spores in the top inch of the soil and crop planting is helpful.
How to prevent tomato diseases
Preventing tomato diseases is easier than treating them. There is no treatment option for many diseases, so you need to learn the best preventive methods to keep your tomato plants healthy and happy.
1. Rotate crops
Many pathogens live in the soil, so do not plant tomatoes in the same place every year. Not all diseases affect all types of plants, so rotting keeps diseases away.
2. Remove the lower leaves and branches
Remove the lower leaves and branches from your tomato plant to prevent it from touching the soil. This is one way that bacteria living in the soil enter your plants. Removing branches helps increase air circulation around your plant, an essential step to reduce the risk of a fungal infection.
3. Water at the base of your plant
It is necessary to keep the foliage dry, so use a soccer tube or hand irrigation that gives you water at the base of your plants. Splash and overhead water splash soil on your plant.
4. Make your tomato plants radish
Always keep mulch around your tomato plants at the beginning of the season. Spread two inches of compost, straw, grass, or leaf mold around your plants. By doing this, the soil on the lower leaves of your plants becomes moldy.
5. Remove all debris
At the end of the growing season, remove all debris, especially the debris of any diseased tomato plant. Burn or toss waste in debris to prevent the spread of diseases. Never put diseased pods in a pile of manure.
Keeping your tomato plants healthy helps reduce the risk of tomato diseases. If your plants contract a disease, take time to correctly identify the disease and determine if the disease can be treated. Many diseases can be treated with fungicides or other sprays available at local garden centers.
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