To harvest a good harvest, tomatoes will have to be taken care of. They require increased attention and knowledge. Only the destruction in time of noticed pests and diseases can ensure a good harvest.
Diseases of tomatoes in the open ground
Vertex rot of the fetus
The disease affects still green fruits. The top of the tomato turns black. Such a defect appears due to a lack of calcium. In order to avoid this disease, before planting seedlings, you need to add a tablespoon of calcium nitrate and a handful of wood ash to the hole. But you can simply irrigate the bush with a solution of calcium nitrate.
Fusarium wilt
What are the most common tomato diseases in the open ground? This is a fungal disease that affects seedlings or very young plants. An infection from the ground gets through the spine. Outwardly, it looks like a tomato lacks moisture. His stalk is cracking and blackening. Crop rotation will be prevented; disease can also be treated with Previkur or Trichodermin.
Whitefly
Tomato diseases in the open ground can also be caused by pests. These are small white flies that hide from the bottom of the leaves. Although they are small, they are very dangerous. To get rid of the pest, you can hang traps in the greenhouse, use the Boverin preparation, open the doors to the greenhouse or remove the film.
Gray rot
Diseases of tomatoes in the open field most often occur due to the fault of fungi. This type of fungus affects the culture in cold and wet weather. The fungus attacks everything: leaves, fruits, inflorescences, stems. Dark spots with a gray coating spread on the plant. As a rule, the fungus originates in gray, cool greenhouses. To defeat the disease, the plant needs to cut off the three lower leaves to increase air circulation below. Usually the fungus dies when the weather becomes warm and sunny.
Spider mite
This is another pest that often poisons the life of gardeners. Diagnosed with small spots of yellowish color. It is almost impossible to make out the ticks themselves, because they are about one mm long. How to sprinkle tomatoes from diseases associated with the activity of ticks? The most effective use of the spider mite for tomatoes in the open ground is the biological product "Actofit." If the plants are in the greenhouse, sometimes it turns out to be sufficient just to remove the film.
Plant aphid
This parasite can affect tomatoes both in greenhouses and in the open ground. A lot of tools have been developed against aphids. But you can fight in natural ways, for example, flush the parasite with a strong stream of water directed to the place of aphid concentration.
Late blight
This is one of the most dangerous diseases to which tomatoes and potatoes are exposed. Late blight appears in the form of brown spots of drying and yellowing of the foliage. Gradually, the disease spreads to the fruits and destroys the crop. The pathogen overwinters on plant debris or in the soil, and is carried by water and wind. The main cause of the disease is excess moisture, so you need to water the tomatoes under the root. You should also not plant tomatoes near potatoes. Protection of a tomato from diseases of this type may consist in spraying with the preparations "Mikosan", "Pentafag". But if the plants are already infected, you should use the chemicals "Tattu", "Infinito", Bordeaux liquid.