What is the reason why the leaves of pepper seedlings turn yellow?

Pepper is a very common vegetable in our lives. The market demand in our country is also very large, and basically there are cultivation everywhere. When we grow chilies, we often encounter many problems that affect the yield of chilies. Especially in the pepper seedling stage, and yellow leaves is one of them. So what is the reason for the yellowing of pepper seedlings? The following small series will briefly introduce you, let's take a look together!

1. High temperature and drought

Pepper seedlings after planting, its roots are still in a relatively fragile state. Therefore, we need to promote pepper squatting through water and fertilizer management. However, if it is in a high temperature and drought environment, the water and fertilizer absorption at the root of pepper seedlings will be affected, resulting in yellow leaves in the lower leaves of the plant due to malnutrition. If this is the case, then we should spray foliar fertilizer and water the seedlings as soon as possible. Especially in summer, it is easy to appear high temperature yellow leaf phenomenon, we must pay more attention.

2. Lack of nitrogen and magnesium

Pepper seedlings in the growth process, the demand for nutrition is relatively large, if the lack of certain nutrients, then it is easy to appear a lot of problems. If peppers are nitrogen deficient, the plants will be thin, short, and the leaves will be thin and small and yellow. In severe cases, they will lose their leaves. Therefore, we should pay attention to the application of nitrogen fertilizer, but not too much to avoid excessive growth of pepper. Magnesium deficiency can also cause pepper yellow leaves, usually at the beginning of fruit, old leaves will gradually yellow veins, and then gradually spread along the veins to the whole leaf. If magnesium is deficient, spray magnesium sulfate and other solutions every week or so.

3, potassium deficiency calcium deficiency

In addition to nitrogen and magnesium deficiency, potassium deficiency is also a major cause of yellow pepper leaves. If pepper plants lack potassium, they will gradually lose green and yellow leaves from the position of leaf margin. Moreover, the leaves in the middle of the plant will also gradually yellow. At this time, potassium dihydrogen phosphate should be sprayed twice properly, and the proportion of potassium fertilizer can also be increased when topdressing. Finally, calcium deficiency also causes yellowing of the upper leaves of the plant and dwarfing of the plant. The leaves around the growing point of the plant gradually stop growing and die when severe. If this happens, spray calcium chloride every five days or so.

4. Chemical damage and fertilizer damage

When fertilizing and applying fertilizer in pepper planting, if the dosage is improper, the plant is easy to produce phytotoxicity and fertilizer damage. If it is not treated in time, it will lead to yellow leaf yield reduction and death. Pepper leaves will be scorched and yellowed after phytotoxicity, but there is no expansibility. After the occurrence of fertilizer damage, pepper leaves will appear yellow, atrophy and other phenomena. Therefore, when suffering from fertilizer damage and phytotoxicity, we should pay attention to watering in time for dilution, and also apply appropriate foliar fertilizer or growth regulator, and then carry out cultivation work and take remedial measures.

The above is a simple introduction to what causes pepper seedling yellowing. Today's introduction is here, this article is for reference only, I hope to be able to help you oh!