A reader from Huaiyin District, Huai'an City, visited the phone on January 5th: The peppers were transplanted for 30 days. After transplanting, the plants grew normally. Now they found that the leaves were curled up and the leaves were uneven and sporadic. No herbicides, insecticides, bactericides were used, and root growth was normal. What's wrong with pepper? During the growth and development of pepper, the upper part of the plant will have 2 to 4 leaf edges curled, leaf surface uneven, shrinking, plant short, poor growth, severe defoliation, falling, fruit drop, there are many reasons for this happening. The optimal growth temperature of the pepper was 20-30 °C, and the temperature was lower than 9 °C. The roots stopped growing and kept below 9 °C. The mesophyll cells were frozen and the leaves curled. Spray pesticides, foliar fertilizer, the concentration is too high or high temperature before and after noon spraying, resulting in injury, fertilizer damage caused by rolling leaves. Soil trace iron, manganese and other trace elements, but also partial application of nitrogen fertilizer can easily cause rolling leaves. Virus disease, tea seedlings serious harm, but also easily lead to rolling leaf phenomenon. It is understood that virus diseases and tea planters are more common in overwintering peppers, and the symptoms are very similar. They both harm the young parts of the plants and cause the leaves to become small deformed, and the plants are short and so on. When they are serious, they cause fallen leaves, fallen flowers, and fruit drop. . The main difference between the two is that after the onset of the viral disease, the leaf margin curls upward, the leaves are uneven, the mosaic leaves shrink, and later the diseased leaves thicken, while the leaf margins of the tea plant damage are curled downwards, and the whole leaf is chlorophyll, and the heart leaves Old leaves are shrivelled; Tea leaves damage the old leaves, heart and leaves, and virus disease mainly damage the heart; Leaves of the tea leaves damage the back of the leaves shiny, grayish brown or brownish luster, the virus does not harm the back of the leaves luster. The curling and leaf symptoms appeared in the field of pepper, and the plants were carefully observed to distinguish them. After the diagnosis was made, they were symptomatic. It is very difficult to control the disease after the onset of hot pepper virus disease. It should be prevented as soon as possible. The insects in the shed should be protected against insects such as aphids and whiteflies. The compounds such as spirotetramat, cyanocyanide, and floxamidine can be used to reduce the disease effectively. happened. Field sporadic disease strains emerged immediately when they were removed, and all fields were sprayed with anti-viral drugs such as aminoglycosides and morpholinium hydrochloride. There are many acaricides that can be used in the prevention and control of chili tea, such as peony, acetylene, triazot, avermectin and so on. When applying pesticides, spray the middle and lower leaves evenly to ensure that the back of the leaves are sprayed with medicine to improve the control effect. Peeled Garlic,Peeled Garlic Cloves,Pre Peeled Garlic,Peeled Black Garlic shandong changrong international trade co.,ltd. , https://www.changronggarliccn.com
Causes of hot pepper leaf