1. Incidence conditions The optimum temperature of Botrytis cinerea is 20-23°C. The cultivation of greenhouses is endangered from December to May of the following year. The temperature is low in winter and spring, and there is more rainy weather. The relative humidity in the shed is more than 90%. Botrytis occurs early and the condition is serious. Poor, partial application of nitrogen fertilizer fields susceptible to disease. 2. The law of incidence Germs are left in the soil with sclerotia, or they use mycelium and conidia to overwinter on diseased bodies, spreading and spreading in the fields with air, rain, and agricultural operations. The bacteria prefers low temperature, high humidity, and low light conditions. Indoor sheds are even in cloudy conditions in spring, with low temperatures and high incidence of humidity. Light is sufficient to inhibit the spread of the disease. 3. The main symptoms At the seedling stage, the leaves, stems, and apical buds are damaged. The apex of the first cotyledon becomes yellow, and then spreads to the young stems, shrinking and shrinking, often falling from the diseased part and dying. In the adult stage, leaves, flowers and fruits are harmed. The damage to the leaf blade started from the tip of the leaf and became pale yellow-brown lesions. It gradually expanded upward into a "V" shaped lesion. Stems develop water-spotted lesions and die above the diseased part. Floral damage, petals wilting. The fruit was attacked. It began to adhere to the joints of young fruit and petals, showing signs of water-stained lesions. After spreading, it caused brown spots in the whole fruit. The border between sick and healthy is obvious, and the diseased area has brown-brown mildew layer. 4. Control methods 1 Timely drainage of water after rain, reasonable ventilation in the shed to reduce temperature; 2 timely removal of diseased leaves, diseased plants, diseased fruit, bring out of the shed or buried deep or burned; re-decoration of high-quality organic fertilizer, increase phosphorus and potassium fertilizer, timely Spraying a new high-fat film to improve the disease resistance of the plants and properly control the watering. Drip irrigation technology can be used as a condition and flood irrigation can be prohibited. The "Ao Li - Ke - Mildew" according to 500 times diluted, spray before the onset or early onset, spraying every 5 - 7 days 1, the number of spray depending on the condition may be. When the condition is serious, according to "Aoli - Ke - Mildew" diluted by 300 times liquid, sprayed once in 3 days. 5. Integrated plant protection 1, timely removal of diseased leaves, diseased fruit, diseased branches and so on. 2. When the gray mold is serious, it can be smoked at the shed and sprayed the next day. 3. When the plants are weak, they need to be sprayed with foliar fertilizers (Wofengsu, tensin), and strong plants to enhance the disease resistance of the plants. 4, the choice of the program, medication interval according to the severity of the disease, the development trend of flexible grasp. 5. The purpose of compounding Jinbei in the above scheme is to enhance the efficacy of the drug; secondly, to supplement the nutrition of the crop and provide the disease resistance of the strain. 6. The main purpose of the above-mentioned scheme for compounding other functional bactericides of the company is to increase the efficacy of the drug; and secondly, to prevent and control the disease during this period. 7. Reasons for compounding chemical agents: In order to prevent disease more quickly and effectively, the company recommends adopting the combination of Chinese and Western medicines to carry out compounding so as to achieve stable and non-resistance of traditional Chinese medicines. . (Note: When mixing with other chemicals, be sure to add our product first, dilute it as a mother liquor, stir and mix, then add other chemicals. If turbidity or sedimentation occurs during the preparation process, please stop using). Nutritious Food,Soft Gummy Candy,Vitamin Chewable Tablets,Analgesic Capsule Guangzhou Etechange Biological Engineering Co.,Ltd. , https://www.etechange.com
Green pepper dirty mold