Do you know why tomatoes turn black?

All gardeners dream of a good harvest of tomatoes. But sometimes brown spots and rot reduce all the work to naught. Usually this happens in August - when the plant appears green fruit. Why do the tomatoes turn black? Let's figure this out.

Late blight and gray rot

Spores of the fungus phytophthora are enough drops of water for germination, therefore during the period of risk (July-August) tomatoes are watered under the root. Leaves and fruits should not get wet. If the disease affected plants, then daily it is necessary to remove diseased fruits and leaves, folding them outside the garden plot. This will prevent the spread of late blight. In addition, the ventilation and illumination of crops improves, which also has a negative effect on the fungus.

If the tomatoes turn black from below, then this is gray rot. This disease is spread with calcium deficiency in shoots or excessive soil acidity. Another option for the appearance of gray rot is the wrong dose of fertilizers for fertilizing.

Prevention of diseases

For the prevention of disease should be aware of such a concept as a crop rotation. It implies that tomatoes can not be planted next to potatoes and on the area where peppers or potatoes grew. They also can not be left in their place: in the old bed they should appear in 4 years.

Why do blackened tomatoes and how to prevent this process? This is the main issue of gardeners. You should know that for planting tomatoes you need to choose areas with good lighting, ventilated from all sides. A rare planting scheme will also protect the plant from the spread of diseases, since bright sunlight is fatal for fungi.

100% protection of plants from disease is not, because a person does not control the weather, and the spores of phytophthora develop in a moist environment. Why do black tomatoes turn black ? This is the manifestation of the above disease. To prevent it, you need to exclude abundant watering. If the site is small, then water the tomatoes with warm water, which was preheated in the sun. When fertilizing, you need to consider the application rates of fertilizers.

Agrotechnical activities

Why are blackened tomatoes, if the site is chosen the right one, and the conditions are all met? The fact is that the disease develops where it is warm, humid and windless. To destroy the environment that is favorable for the fungus, plants need to be planted and tie the stems to stakes or trellises.

From the ground to the bottom leaves should be about 30 cm - this will ensure the necessary ventilation of the soil. Pasynkovanie and pinching accelerate the growth and maturation of fruits, so the harvest can be collected before the development of late blight. Gardeners also sprayed bushes with salted warm water, and at the first signs of infection - a one-percent Bordeaux liquid.

So we answered the question of why the tomatoes turn black. The main thing is to remember that the fungus loves heat, moisture. Therefore, it is necessary to conduct all preventive and agrotechnical measures in a timely manner and observe the conditions for growing tomatoes.