Why Are Green Pepper Leaves Curling? Latest Cause Analysis
Green peppers are planted in spring and harvested in summer. As for peppers, farmers who grow them at home sometimes run into small problems, such as green pepper leaves curling. Things may have been fine before, and then one day you suddenly notice the green pepper leaves have curled. What is the reason? Let's take a look at exactly what the causes might be, and how to effectively prevent this phenomenon.
1. Lack of water
When soil moisture is lacking, the root system will lose water and dry out, and it will also lose its ability to absorb. The roots cannot take up much water, so the leaves will lack water, and the whole plant will lack water. In the end, the leaves may curl because of water loss. In this case, it is best not to touch the leaves at first. In the evening, when transpiration is low, you can water promptly, but do not water that much at first. Gradually return to normal watering.
2. High temperature
If summer arrives with high outdoor temperatures, transpiration is very high, and the soil temperature will also rise. If the soil contains a lot of water at this time, it can easily scald the roots. If there is no water, the leaves will curl to reduce transpiration and ensure the leaves do not wither. For this cause, it is best to control the temperature at all times. Sometimes you can put up shade netting, or cover with other items to lower the temperature. If growing in a greenhouse, the temperature is somewhat easier to regulate.
3. Viral disease
Peppers can be infected by many kinds of viral diseases, and many viral diseases cause leaf wrinkling and curling. However, the symptoms after infection with a viral disease are fairly obvious, and it is easy to identify whether the leaf curling is caused by a viral disease. If it is, treat it promptly. This is not just a matter of curled leaves. It is best to use the corresponding pesticide to control the condition and eliminate the virus. But when spraying, pay attention to the concentration used so as not to damage the leaves.
4. Insect pests
Aphids, planthoppers, mites and similar insects all suck the sap of leaves or plants, and at the same time they can also spread viral diseases. When you find these insects, usually the larvae gather on the underside of leaves or on branches and stems. As soon as you find them, you can first brush off the insects, collect them in a container, and finally apply a liquid pesticide directly to kill them. Then spray pesticide over the entire growing area, including the field ridges.
5. Improper management
Sometimes the soil lacks nutrients, little fertilizer is applied, and there is a lack of nutrients, which can also produce leaf curling. If there is very little humus and a lot of nitrogen fertilizer is applied, the resistance of the pepper plants declines as they grow, they have no resistance, and their adaptability is very weak. So besides choosing suitable soil, you can also apply more decomposed farmyard manure, leaf mold and the like. Use chemical fertilizers and nitrogen fertilizers alone less often.
The curling of green pepper leaves is mainly due to the above causes. In fact, there may also be other causes. Everything should be judged according to actual growth. The key is to prevent aphid damage and viral diseases, as the two are closely related. Lack of water and high temperature are both physiological causes and need attention.