How to cure capsicum leaf disease? What is the reason for the pepper roll? In different seasons of the year, peppers have different symptoms and different degrees of leaf rolling, which seriously affect the yield of pepper. Farmers’ friends abuse drugs without knowing the reasons, which not only does not work, but also causes phytotoxicity. In fact, there are several reasons why pepper rolls are summarized.

First, Hummer Hazards

The horses have occurred in spring, summer and autumn, especially in the autumn, which is generally endangered, that is, in early August and September.

Hummer is a sucking mouth device that can break the epidermis of pepper plants, suck the leaves of pepper plants, and juice the juice. The taupe strips will be hardened after being damaged, and when they are severe, the fruit will grow slowly, which will seriously affect the yield and quality.

Living habits: Adults are active, able to fly and jump, afraid of light, like to suck on young plants, and eat more in the shade of leaves or leafhoppers and curls during the day.

Prevention:

(1) Drug control, 5% acetamiprid 200 times; imported sharp wins 30% thiamethoxam 800 times, can be mixed with avermectin; or phenoxycarb (dioxycarb), in order to improve the efficacy can be added organic Silicon additive.

(2) According to the sensitive characteristics of the thrips to blue, blue plate trapping can be set, 20--25 pieces of 30x400cm blue plate per acre, and 15--25cm higher than the pepper.

Hummer application techniques, Hummer activities have two forms, one is the leaf scorpion horse, active on the leaf or at the growth point, sprayed from the back of the leaf when using the medicine. One is the flower hummer, which is active in the flower. It is generally recommended to apply before 9 o'clock because the morning flowers are open. Sunny weather works best.

Second, the mites harm

After the summer and autumn, the tea leaves are yellow and white spiders damage the leaves, and the leaf edges are rolled down. There are performances on both new and old leaves. Often, the pepper causes the appearance of falling flowers, fallen leaves, and fruit drop, and the peel becomes rough and tarnished. Chemical control is also difficult to control, affecting the yield and quality of pepper, and reducing the economic benefits of vegetable farmers. When controlling the sassafras, the spraying parts should be comprehensive. The tea sassafras is small and likes to lay eggs in the back area of ​​the young leaves, or hidden in the soil seams and weeds. Therefore, the whole plant should be sprayed when using the medicine, including the leaf back, the ground, and the field attachments. In addition, when spraying, try to use a sprayer with good atomization effect, and add synergists such as white sugar or silicone to enhance the control effect.

Insecticide, ovicidal administration, or use of insects and eggs. This is because only the use of acaricide without ovicidal effect, although the number of sassafras has decreased in the short term, but soon the number of groups will rise again, need to be used again. Therefore, it is preferable to use insecticides such as snail ester, scorpion, and acesulfame ester.

Third, the virus disease

The diseased leaves of the pepper virus disease are the upward curl of the leaf margin, and the viral disease is generally more obvious on the new leaves. The symptoms of viral disease on pepper fruits are brown necrotic spots and fruit deformities.

The disease of capsicum virus is serious in prevention, and plant resistance is increased by plant vaccine plus gentamicin, amino oligosaccharide, dextran, lentinan, etc. during the growing season. Ensure soil moisture, not too dry.

Fourth, physiological leaf curl

The main symptoms of the leaves are longitudinally rolled up, which are cylindrical, thickened, brittle, and hard. Rolling leaves reduce the area of ​​leaf photosynthesis and have an impact on yield. The cause of the disease is soil drought and air drying. Excessive application of nitrogen fertilizer, especially trace elements such as iron deficiency and manganese deficiency in the soil. The prevention methods are as follows:

(1) Watering at the right time and evenly to avoid the soil being too dry and too wet.

(2) Protected ground peppers should be released in time when the temperature is high; when the air is dry, the leaves can be sprayed or watered in the field.

(3) When the leaf curl caused by the missing element occurs, the compound micro-fertilizer can be sprayed 1-2 times.

The above is the most common reason and control measures for the coils of peppers that have been prepared by the farmers in need. The farmers who have read the vegetables will be implemented next time, which will increase the yield of their own peppers. More chili related planting knowledge is available in Hui Nong!

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