2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16
Very often during the ripening period of tomatoes, yellowing and drying of the lower leaves of plants is observed. At first, it is not at all clear why this is happening. After all, tomatoes were provided with sufficient watering, and bird droppings were introduced into the soil in optimal quantities.
To combat this, you need to try to figure out why the lower leaves of a tomato turn yellow.
If the old lower leaves turned yellow before the others and the color of the leaf plate changed completely, and not just the vein where we are
can we find a description of such a phenomenon? Of course, botany will tell you that the reason lies in the deficiency of nutrients, namely nitrogen.
Ah, fragrant tomatoes! Their lower leaves turn yellow, but this does not happen with new ones. Should I be worried here? No, you don't have to worry too much about it.
Perhaps, too "fat" and solid tomato seedlings have grown. The lower leaves are turning yellow because it has grown a little. When transplanting from pots to a greenhouse, in this case, the root system of tomatoes is a dense ball. Too often, it is these seedlings that need more time to adapt to new conditions. Therefore, one should not be surprised that the leaves of the tomato bushes begin to turn yellow, from the bottom to the top. This is due to the onset of the development of diseases and the death of overgrown roots.
And why do the lower leaves of a tomato turn yellow? This phenomenon can cause Fusarium wilt. It talks about a dangerous fungal disease that quite often affects tomatoes. It can be identified by wilted leaves that have lost turgor. Looking at them, you might think that the plants have not been watered for two weeks. This disease is caused by soil fungi that are able to live in the ground for a long time. It is because of them that tomato yields are significantly reduced.
The spores of these mushrooms are spread by the wind. High temperature is also considered a favorable factor, since the disease affects more plants in hot weather.
Why the lower leaves? In a tomato, not only the lower ones turn yellow. In fact, every plant has a risk of being affected by this disease, regardless of age: both at the time when the tomatoes are seedlings, and at the stage of growing in a greenhouse or in a greenhouse, and when growing in
outdoors.
The plant is affected by the disease through the root system. Then the disease moves to the stem. The fungus grows and disrupts the vascular system of the plant. The disease develops and the plant weakens. There are caseswhen water and nutrients simply do not enter the leaves. Severe stunting is observed, accompanied by yellowing of the leaves.
Now we know why the lower leaves of a tomato turn yellow. And one more small nuance. When seedlings are transplanted to a permanent place, the lower part of the leaves first turns yellow and dies off. Then the disease spreads to the upper areas and the plant dies completely.
But if tomatoes have a minimal scale of damage, then by the end of summer they will have a few small fruits. They will reach maturity ahead of time.
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