Prevention of leaf spot leaf spot disease is mainly caused by black spot and brown spot. Both diseases are mainly damaged leaves. Can be sprayed at the early stage of the disease. The better agents are: 80% of mancozeb 800 times, 70% thiophanate-methyl 800-1000 times, agricultural anti-water 120 times 200 times, 50% colloidal sulfur 200 times, 1:2: 200 times more Bordeaux mixture. Spraying should pay attention to spray evenly, spray thoroughly, to prevent leakage of spray, spray once every 8-10 days, and even spray 3-4 times, can basically control the occurrence of the disease. Foliar fertilizer spray fertilizer supplement nutrient has many advantages such as rapid absorption, rapid action, high utilization rate, it is a good measure to prevent early decending caused by early leaves. Earthy sand, thin soil, lack of base fertilizer, short plants, weak growth, yellow leaves with deferring phenomenon of peanut, 1% urea solution can be used for foliar spray. Peanut leaves have a strong phosphorus absorption capacity. During the middle and late stages of growth, spraying 2%-3% of superphosphate calcium leachate per acre (filtering for 14-16 hours) 60 kg, spraying once every 7-10 days. , spray 2-3 times, generally increase 7% -10%. Or use 100-150 grams of potassium dihydrogen phosphate per acre and 50 kg of water. After fully dissolving, spray it in the evening or cloudy afternoon. It is best to spray 3 times, each time for 7 days, if within 8 hours after spraying. In case of rain, re-spray 1 time. Manual Breast Pump,Massage Breast Pump,Led Display Breast Pump,Manual Massage Breast Pump NINGBO YOUHE MOTHER&BABY PRODUCTS CO.,LTD , https://www.oembreastpump.com