Green pepper leaves curl. What's going on?

Green pepper is planted in spring and harvested in summer. Pepper is planted in farmers 'homes at ordinary times. Sometimes there will be a small problem. For example, green pepper leaves are curly. They may have been very good before. Suddenly one day, green pepper leaves are curled. What is the reason for this? Let's take a look at the specific reasons and how to effectively prevent this phenomenon.

1. Lack of water

When soil moisture is deficient, the root system will lose water and dry up, and it will lose its absorption capacity. The root system cannot absorb too much water, so the leaves will lack water, and the plants will lack water. Finally, the leaves may curl because of water loss. In this case, it is best not to touch the leaves first, in the evening when the transpiration is small, you can water in time, but do not water so much at the beginning, gradually return to normal watering.

2. High temperature

If it enters summer, the outside temperature is high, the transpiration is very large, and the soil temperature will also rise. If there is a lot of soil moisture at this time, it is easy to boil the roots. If there is no water, the leaves will curl and reduce the transpiration to ensure that the leaves will not wither. For this reason, it is best to control the temperature at any time, sometimes you can cover the sunshade net, or cover other items to cool down, if it is greenhouse planting temperature will be easier to control some.

3. Virus disease

Pepper will be infected with a variety of virus diseases, many virus diseases will cause leaves to shrink, curl, but the symptoms after infection virus disease is more obvious, it is easy to identify whether the infection virus disease caused leaf curl, if it is to be treated in time, this is not only the problem of leaf curl, it is best to use the corresponding agent to control the disease, eliminate the virus. But spray to pay attention to the use of concentration, do not damage the leaves.

4. Insect pests

Aphids, planthoppers, mites and other insects are sucking leaves or plant sap, but also spread virus diseases, found that these insects, generally larvae cluster in the back of leaves or branches, a discovery can be first brushed off insects, collected with containers, and finally put pesticides directly poisoned. Then spray the entire planting area, including the ridges.

5. Improper management

Sometimes the soil nutrition is insufficient, the fertilization is very little, the lack of nutrition, also can produce the leaf roll phenomenon, if the humus is very little, applies the nitrogen fertilizer many, the pepper plant growth resistance drops, does not have the resistance, the adaptability is very weak. Therefore, in addition to choosing the right soil, there are also some decomposed farm manure, deciduous soil and the like that can be applied more. Use less chemical fertilizer and nitrogen fertilizer alone.

Green pepper leaf curl is mainly these reasons, in fact, there may be other reasons, everything should be judged according to the actual growth, focus on preventing aphid damage and virus disease, the two are closely related. Water shortage, high temperature are physiological reasons, need attention.