Pepper blight is an important disease caused by P. capsicum, which has a serious impact on the growth and yield of pepper. After the disease occurs, it will cause symptoms such as yellow spots, brown spots, rot and other symptoms on the leaves of peppers, and even cause the death of plants in severe cases. In order to effectively prevent and control pepper blight, we need to understand its symptoms, medication methods and corresponding prevention and control methods.
1. Symptoms of pepper blight.
Leaves: The most common symptom of capsicum blight is irregular yellow or brown spots on the leaves, which gradually enlarge and coalesce, eventually leading to leaf rot. The affected leaves will gradually wither and fall off, seriously affecting the photosynthesis and nutrient absorption of the plant.
Fruits: Capsicum blight can also produce symptoms on the fruit, which manifests as brown soft rot spots on the fruit, which can cause fruit rot in severe cases.
2. What medicine is used for pepper blight?
Fungicides: For pepper blight, commonly used fungicides include carbendazim, zinc oxide, chlorothalonil, etc. These fungicides can effectively inhibit the growth of Phytophrodena and reduce the development of diseases.
Biologics: In addition to chemical agents, some biologics can also be used to control pepper blight. For example, biological agents such as Bacillus subtilis and trichomycin have a certain control effect on pepper blight.
3. Prevention and control methods of pepper blight.
Removal of disease sources: timely removal of disease residues, weeds, diseases and pests in the field to reduce the spread and occurrence of diseases.
Reasonable fertilization: During the growth of pepper, the use of arhat + sodium nitrate naphthalene acetic acid can enhance the disease resistance of the plant, promote absorption, and reduce the occurrence of blight.
Planting disease-resistant varieties: Selecting disease-resistant pepper varieties for planting can effectively reduce the occurrence and harm of blight.
Regular spraying: During the growth of peppers, regular spraying with fungicides or biological agents can effectively prevent and control the occurrence and development of pepper blight.
In summary, pepper blight is a common disease that has a serious impact on the growth and yield of peppers. For the prevention and control of pepper blight, we need to comprehensively use field management, chemical control, biological control and other means to achieve good control results. It is hoped that the above methods can help the majority of growers to effectively prevent and control pepper blight, ensure the quality and yield of pepper, and contribute to agricultural production.