Many diseases of tomatoes may be as soon as possible cause of death of the crop. When the symptoms of symptomatic treatment should be started immediately to prevent the spread of infection. In addition, if the incidence of cases of tomatoes have already been identified in the area, it is necessary to focus efforts on infection prevention.
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tomato spread of disease and methods of combating them
Tomatoes not only suffer from bacterial, viral and fungal infections, but also from improper care. The most common and dangerous diseases of tomatoes include:
- Cladosporium;
- apical rot;
- late blight;
- mosaic;
- gray mold;
- Gangrene Gangrène.
Vertex rot occurs when an excess of nitrogen in the soil, and also the shortage of calcium and water. When the disease on the fruit appear dark shiny spots. In wet weather they can become watery and exude a putrid smell. To resolve this problem, we recommend to increase the watering and spend their spraying with a solution of calcium nitrate, which is prepared at the rate of 1 tablespoon substances for 10 liters of water.
Cladosporium or brown spot of tomato leaves, is a fungal disease. On infected plants indicated by the appearance on the leaves brown spots, covered with a touch of gray. In the future, affected and fruits. If signs of infection should be reduced watering and hold 2-3 spraying tomato drugs such as Barrier or Barrier, with an interval of 7 days.
Another common disease is late blight of tomatoes. It is a fungal infection that leads to the appearance of brown spots on the fruit and leaves, as well as a white plaque. Most types of tomatoes affected by this disease, so 20 days after transplanting It performed its processing solution Barrier preparation which is prepared from the calculation means 3 of the cap 1 L of water. A second treatment should be carried out with a solution of the drug barrier, which is prepared at the rate of 5 tablespoons means 10 liters of water.
Gray rot - a fungal infection that most often appears in late summer provided wet weather. In this disease, and in mature green fruit appear characteristic round spots of brown color. The affected parts of the plant and the fruit should be removed. After that the spraying of plants with antifungal drugs.
Gangrene Gangrène or accompanied putrid brown rot of fruits lesion around the stalk. This leads to a fall off like a ripened and green tomato. This disease develops due to an overabundance of nitrogen in the soil. Affected fruits should be removed and destroyed. Plants should be treated fundazol.
Mosaic - a viral infection that leads to the first appearance of light green and yellow spots on the leaves, and then they die. Affected plants die. The fruits do not have time to ripen. Diseased plants are destroyed. Young seedlings should be treated with low-fat milk with urea.
Prevention of diseases of tomatoes
To reduce the risk of infection of tomato seedlings for best use of the seeds of 2-3 years ago. Affected seeds in most cases do not germinate. Before germination of seeds required to be treated with potassium permanganate or other disinfectants. In the autumn should collect and burn all plant residues. Soil and all the elements necessary to disinfect the greenhouse with copper sulfate.
Caution is advised to use nitrogenous fertilizer and fresh manure with fertilizer plot.
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