Analysis of the Latest Causes of Tomato Leaf Curling

Tomato is a very popular vegetable, and it is grown on a large scale in both northern and southern China. Tomatoes are very rich in nutrients, which is why they are so well liked by many people. However, when growing tomatoes, we often run into many problems that affect tomato growth. One of these is tomato leaf curling. So what causes tomato leaf curling? Below, the editor will give you a brief introduction. Let's take a look!

1. Too early pinching and pruning

When growing tomatoes, we need to carry out pinching and pruning. But pay attention to the timing of pinching. If you pinch too early, it can easily cause axillary buds to sprout, preventing phosphate in the leaves from being transported, and the leaves will age as a result, leading to leaf curling. In addition, when pruning, the time for removing side branches should not be too early either. You should wait until the side branches have grown to about 7cm before doing it. If pruning is done too early, the assimilation area of the leaves will be too small, affecting the growth of the aboveground part of the plant and also greatly affecting root growth, resulting in leaf curling.

2. High temperature and drought

During the peak fruiting period of tomatoes, temperature and moisture are very important. If you encounter high-temperature and drought weather, be sure to water in time and do a good job of replenishing water. If you do not water and replenish water in time, it will have a very big impact on tomato growth. This is because at this time the leaf area is very large, and a high-temperature, strong-light environment causes excessive transpiration in the leaves, with water evaporating too quickly, causing the lower leaves of the plant to curl.

3. Improper fertilization

During the growth process, tomatoes have a fairly high demand for nutrients. So we should pay attention to doing a good job of fertilization and controlling the application of nitrogen fertilizer. Remember that you must not apply too much nitrogen fertilizer. If too much nitrogen fertilizer is applied, it can easily cause fertilizer damage to tomatoes, causing small leaves to turn over and curl. Moreover, applying too much nitrogen fertilizer will cause tomatoes to lack phosphorus and potassium elements as well as various trace elements. All of these can cause the leaves to be too small and deformed.

4. Diseases and pesticide damage

Disease is also one of the main causes of tomato leaf curling. Among these, viral disease is especially notable. After tomatoes develop viral disease, the leaves easily lose their green color, become smaller, and the leaf surface shrinks. This generally mainly occurs on the heart leaves and upper leaves of the plant, especially under high temperature and strong light. Another cause is pesticide damage. Many people use chemicals to dip flowers during the tomato flowering period. If the concentration is too high, or if the leaves come into direct contact with the chemicals, this will also cause leaf curling.

The above is a brief introduction to the causes of tomato leaf curling. That is all for today's introduction. This article is for reference only, and we hope it can be helpful to everyone!