Peanut net spot disease leaves Early defoliation of peanuts can seriously affect the yield of peanuts. The main causes of early deciduous pods in late-stage peanuts are plant premature failure and leaf spot disease (net spot disease, brown spot disease, etc.), spraying of paclobutrazol and peanuts containing the same. Fallen leaves earlier and heavier. Therefore, prevention of early deciduous peanuts can be started from the following aspects. Foliar spraying fertilizer When peanuts reach the late growth stage, the ability of roots to absorb nutrients from the soil and the ability of rhizobia to fix nitrogen begin to weaken, while the ability of the leaves to absorb nutrients is increasing. Foliar spray fertilizer supplement has the advantages of rapid absorption, rapid action, high utilization rate, etc. It is a good measure to prevent premature aging. Combining spray or spraying alone for 8 to 10 days with 3 to 4 shots, you can receive better anti-premature effects, which can reduce the symptoms of early leaves. Prevention of net spot The net spot disease first formed a reticular spot with unclear edges on the leaf surface, brown spots appeared at a later stage, spread rapidly after onset, and most of the leaves could be detached in a few days. It was the most serious and hardest to control in the leaf spot disease. Species. It is necessary to strengthen field management, increase the use of organic manure, phosphorus and potash fertilizer, reasonably water, timely cultivating, and improve plant disease resistance. Chemical control: At the beginning of the disease, 70% mancozeb WP can be used 500 to 600 times, or 75% chlorothalonil wettable powder 700 to 800 times, or 64% WP can be sprayed at 500 times. , spray once every 7-10 days, even spray 2 or 3 times. Prevention of brown spot Peanuts were dark brown or dark brown in the late-reproductive period, with yellow halos around the initial lesions. In the early stage of disease, spray 80% mancozeb 600 to 800 times, or 70% thiophanate-methyl 800 to 1000 times, etc., spray once every 8 to 10 days, and spray 3 to 4 times. Radiography System,Single Flat Panel,Ceiling Suspension System,X Ray Sensitive Plates MinFound Medical Systems Co., Ltd , https://www.minfoundmed.com