Identification and Control of Pepper Diseases and Insect Pests

Diseases and pests are a major obstacle to the high yield of pepper. The main diseases of pepper are anthracnose, scab, disease, virus disease, etc. Insect pests are mainly aphids and tobacco insects. Now the symptoms of some diseases and the prevention and control methods of pests and diseases are summarized as follows:
??1. Symptoms of the disease
Anthracnose: The disease mainly damages the fruits and leaves. In the early stage of the disease, the lesions were immersed in yellow-brown spots. The lesions were mostly round or irregular in shape. The lesions were brown. After the damage, the leaves showed immersed water and green spots, and later developed into a dark-brown edge and a gray circle at the center. Shaped lesions, diseased leaves can easily shrink and fall off.
Scars: Also known as bacterial scab, it mainly damages leaves, stems, and fruits. Many round or irregular black-green to yellow-brown spots appeared at the early stage of leaf infection, sometimes with ring bands; irregular spots or plaques in the lesions after stem infection; round or oval shape after fruiting Dark green spots.
Bacterial disease: dark green water immersed in spots after fruit infection, and then quickly turn brown soft rot; stems and branches after infection with brown streak appear around the epidermis expansion, diseased branches and leaves quickly withered.
Virus disease: The affected plants generally exhibit symptoms such as mosaicism, yellowing, necrosis, and deformity.
Anthracnose, scab, and epidemic diseases mostly occur under conditions of high temperature and high rainfall, and viral diseases tend to occur under the conditions of high temperature and drought.
??2. Integrated disease prevention and treatment
To prevent the occurrence of diseases, the first is the selection of disease-resistant varieties, such as the Chinese Academy of Agricultural Sciences, China Academy of Sciences, cultivated on the 8th, Sheungjiao 1, and so on. Followed by the rotation, with non-solanum crop rotation for 2 to 3 years, combined with deep plowing, so that the diseased body fully rot, and accelerate the death of the bacteria. In addition, field management should be strengthened in the cultivation to avoid over planting, and the application of phosphate fertilizer and potash fertilizer in order to improve plant resistance to disease, the implementation of high ridge film cultivation.
??3. Disease prevention and treatment
Anthracnose: 15% chlorothalonil WP can be used with 800 times 70% thiophanate-methyl WP 800 times mixed spray, spray every 7 to 10 days, and even spray 3 times.
Hemorrhoids disease: In the initial stage of the disease, spray protection is applied in a timely manner. The commonly used agents include agricultural streptomycin (or neomycin), mancozeb, etc., and the drug solution is prepared according to the instructions of each drug and is sprayed once every 10 days or so. Spray 2 or 3 times.
Diseases: Spraying 43% of toxic copper wettable powder 500 times, or spraying 58% of toxic manganese zinc wettable powder 400 to 500 times during the colonization of pepper, after the seedlings bloom, and during the flowering period. Liquid, pay attention to the alternate use of pharmaceuticals.
Virus disease: You can spray 20% of the virus A WP 500 times or 1.5 times of disease Ling Lv 1000 times, spray once every 10 days, even spray 3 to 4 times.
??4. Pest control
蚜 Locust: In the pepper breeding, after planting and in the early growth stage, the method of covering the membrane and covering the shade net can be used to block the invasion of the aphid. In the later period, foliar spray can be used to spray the anti-influenza, acaridone, anthrazone, and dichlorvos. Spray once every 5 to 7 days and spray 2 or 3 times.
?? Cotton bollworm and tobacco budworm: in the adult stage with 4.5% of the enemy against the application of powdered soil poisoning, larvae with 2% in the previous sweep profit or Kung Fu EC 1000 ~ 1500 times spraying control.

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