Chili blight is a devastating disease that harms the roots, stems, branches, leaves, and fruits of peppers and often causes large areas of dead trees. The average plant death rate in field plots ranges from 10% to 30%, and severely to 90%. Chili pepper disease has a great impact on the yield and quality of peppers. In severe cases, it reduces production by more than 50%, and even causes devastating damage. When growing peppers, comprehensive measures should be taken to prevent and control them.
The onset of symptoms of the onset of symptoms was immersed in dark green, followed by brown or dark brown streak, the disease above the branches and leaves quickly withered to death, but not leaves. The fruit susceptibility originated in the fruit pedicle, resulting in dark green lesions that later turned brown and soft rot. The dead fruit and leaves remained on the branches after water loss, and died after falling or standing dead. The base of the stem is infected, and the vascular bundle is brown. It also produces dark green lesions. When the humidity is high, the diseased part can be seen as white mold.
Control methods l. Selection of disease-resistant varieties. In order to reduce the harm caused by the disease, combined with the local conditions, it is possible to use the disease-resistant varieties of "Chouzhou Brand Feng Kang Jiao Wang" with strong resistance to diseases.
2. Agronomic measures. To avoid continuous cropping, peppers can be rotated with crops such as corn, leguminous and cruciferous crops. When growing seedlings, use new soil or disinfect the soil with a disinfectant before planting. When transplanting in a large area, high ridge cultivation should be adopted to avoid accumulation of water in the field. Pay attention to reasonable fertilization, increase potassium fertilizer, can enhance plant disease resistance, improve yield and quality. The viscous soil should be modified with organic fertilizers to enhance its permeability and water seepage. Usually can be sprayed ASUS 828 liquid fertilizer, nurturing strong seedlings, disease resistance, disease prevention.
3. Chemical control. Found withered, dead diseased plants should be timely spraying pesticide control. In the early stage of onset of the disease, it is possible to use Guoguang Sanzhi (50% Mn-Zn fluoromorpholine) 500 times solution spray, or 50% dimethomorph morpholine 800 times solution + Genbao 500 times solution + Asus 828 liquid fertilizer 800 times The liquid is sprayed. The method is to spray and irrigate the diseased area and the area around the radius of 8-10 meters, that is to spray the entire leaves, fruits, branches and stems of the whole plant like a bath, and the liquid flows to the root. Other areas that are not diseased need to be sprayed, including sprays on field weeds.
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