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The reason for the new rational curly leaves of tomatoes

2026-08-06 02:21
2026-08-06 06:51

Tomato's new leaf curl could be caused by the following reasons: 1. ** Water-related factors ** - [High temperature and drought: High temperature will increase the transpirations of the leaves and accelerate the loss of water.] If the water supply was insufficient and the soil was dry, the plant would not be able to balance the water in and out. The leaves would close the stomata and reduce the amount of water evaporated, causing the leaves to shrink or curl. - [Too much moisture in the soil: This situation will cause the root to grow slowly and the soil to be shallow. In serious cases, the root will turn black or even die.] Moreover, too much water in the soil would cause the oxygen content of the soil to decrease, and the root system would be hindered in their oxygen breathing, forcing them to carry out the anoxide-based breathing. The products of the anoxide-based breathing (such as alcohol, actic acid, etc.) would accumulate in large quantities in the plant body, causing the plant to be poisoned, causing the plant body to be malnourished and causing the leaves to roll. 2. ** Nutritional factors ** - ** Nutrient deficiency **: The organic matter content in the soil is low, and the lack of essential elements will cause abnormal growth of plants. After the fruit sat down or began to pick the fruit, it needed a lot of nutrients. If it was not effectively supplied, the leaves of the first fruit branch would be slightly curled, or the leaves of the whole plant would become cylindrical and brittle. When the soil lacked trace elements such as iron and Manganese, it would also curl the leaves, often accompanied by symptoms such as the leaves turning yellow and purple. - ** Partial application of nitrogen fertilizer **: excessive application of nitrogen fertilizer, especially when there is too much nitrate-nitrogen, will cause the small leaves to curl. 3. ** Root problems **: When the root system is poorly developed and damaged, its ability to absorb water is weak, which will cause the plant to lack water and cause the leaves to roll. For example, if the hoe was too deep, the organic fertilizer was not fully decomposed, causing the roots to burn, or the fertilizer was applied too close to the roots, it would cause damage to the roots. 4. ** Management factors ** - ** Training and pinching problems **: If the training and pinching are too heavy and there are too few leaves left on the plant, it will affect the development of the root system, restrict the absorption and supply of water and nutrients, and easily induce leaf curl. When trimming and pinching were done too early, the phosphorous acid absorbed and transported by the root system was transported up to the upper new leaves through the lower leaves. Because the trimming was too early and there was no way to transport it, it accumulated in the lower leaves and hardened and curled. - [** Inappropriate temperature management **: The abnormal temperature will also affect it.] When the temperature exceeded 35 ° C, not only would the photosynthesis weaken, but it would also destroy the structure of the plastids, causing the leaves to wither. When the night temperature was lower than 6 ° C, there would be a low temperature barrier, causing the back of the upper leaves of the plant to roll up. The leaves were dark green and lusterless, and the frozen parts of the leaves gradually dried up or individual leaves wilted and dried up. - ** Inappropriate fertilizer **: If the fertilizer is not applied properly and the amount of fertilizer is too much, it will cause the concentration of the soil solution to increase, which will hinder the absorption of water by the root system, resulting in water shortage and causing the leaves to curl. - ** Phytotoxicity **: During the tomato planting process, when using plant hormones to prevent flower and fruit dropping, if the concentration or position of the solution is wrong (such as accidentally dipping 2,4- D on the young leaves or growing points), the leaves or growing points will be bent, and the new leaves will not be able to spread out normally, resulting in twisted and deformed leaf edges. Read more exciting novels for free

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2026-08-09 12:49
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