When planting peppers, it is necessary to control the spacing to facilitate ventilation and light transmission, and do a good job in water management to prevent excessive moisture in the field. In autumn and winter, do a good job in clearing the garden to clean up the dead branches and leaves, which are burned intensively and can cause disease. Afterwards, spray pesticides such as thiophanate and thiophanate methyl appropriately. If insect damage occurs, spray matrine, rotenone, imidacloprid, matrine, and azadirachtin. Aphids can be lured with yellow boards.

Common diseases in pepper planting

1. Mosaic disease: The upper leaves of the diseased plant will first show dark green and light green mosaic leaves. If the situation is serious, the leaves will turn yellow and the diseased plant will grow slowly. Weak, short internode, deformed and sparse flowering.

2. Viral disease: It mainly affects the growth of pepper leaves and fruits. The diseased parts will turn green irregularly, and the diseased fruits will be deformed, uneven and easy to fall off.

3. Bacterial wilt: The roots of the diseased plants will rot after browning. The diseased stems will turn brown when cut across the ground and secrete milky white bacterial fluid. In the later stage, the diseased plants will quickly wilt and die, and the stems and leaves will appear. Still green.

4. Soft rot: It mainly harms the growth of fruits. There will be water-soaked dark green spots at the beginning, which will turn brown and rot later. It will easily fall off when exposed to external force. If there is a wound, ulcers will flow out. If it falls off, it will hang dry and leave white skin.

Main pests in cultivated peppers

1. Cotton bollworm: Cotton bollworm is a common pest during the growth of peppers. It not only affects the growth of peppers, but also affects other solanaceous vegetables. , harming the growth of buds, flowers, and fruits. The buds turn yellow-green and then fall off naturally, eating the pedicles of the fruits, causing rainwater or pathogens to enter the inside of the fruits, and the fruits fall off.

2. Aphids: If aphids damage peppers, the leaves will be deformed and curled, and the entire plant will be weakened and dwarfed, resulting in a decrease in yield. Aphids can also spread other viruses, leading to pepper diseases.

3. Beet Armyworm: Beet Armyworm mainly harms the growth of leaves. Leaves are susceptible to diseases. It also affects the production of photosynthetic products in leaves, thereby affecting the expansion of pepper fruits.

4. Tobacco caterpillar: The larvae of the tobacco caterpillar eat the buds, flowers and fruits of peppers. The eaten buds, flowers and fruits will rot and fall off, which greatly reduces the yield of peppers and is seriously damaged by the tobacco caterpillar. For land parcels, the loss rate will be as high as 30-80.

Prevention and control of pepper diseases and insect pests

1. Diseases: When planting peppers, the spacing should be controlled to facilitate ventilation and light transmission, and water management should be done to prevent excessive moisture in the field. This should be done in autumn and winter. In the garden cleaning work, the remaining branches and dead leaves were cleaned up and burned together. After the onset of the disease, pesticides such as thiophanate and thiophanate methyl were appropriately sprayed.

2. Insect pests: Cut off the diseased branches and leaves promptly, and spray matrine, rotenone, imidacloprid, thiamethoxam, and clothianidin in the initial stage of pest infestation. Aphids can be attracted with yellow boards, or with Imidacloprid, cyantraniliprole and other sprays, tobacco caterpillars can be sprayed with matrine, azadirachtin and other sprays.