Peanut planting techniques: what are the diseases and insect pests of peanuts?

What are the diseases and insect pests of peanuts? How to prevent and cure? Also ask netizens to help introduce the main diseases and insect pests of peanuts are leaf spot, cotton bollworm and red spider, and the harm and control methods of farming web, which are listed below for netizens' reference. First, the harm of peanut leaf spot: peanut leaf spot mainly includes brown spot, black spot, net spot and scorch spot, which will directly affect the plumpness of peanut and reduce the yield of peanut. The control methods of peanut leaf spot were as follows: physical protective agent high lipid membrane, biological agent agricultural resistance 120200 times and marine biological preparation Nongle 1 400times. Chemical agents such as diphenyltriazole 1000 times, chlorothalonil 1000 times, diniconazole 1500 times, Ye Banjing Ⅱ 600times, Bordeaux solution, mancozeb 400times, 75kg per mu. Keeping good leaves of summer sowing and wheat interplanting peanuts is particularly important for the increase of yield. Second, the harm of Helicoverpa armigera and red spider: the third generation of Helicoverpa armigera harms wheat peanuts and the fourth generation harms summer peanuts. The first to third instar larvae peel off tender leaves and flower buds and enter the overeating stage from the fourth instar. Red spiders are easy to occur in late drought. The main agents to control Helicoverpa armigera are: 50% phoxim emulsion or 2.5% phoxim EC 1500 times, 20% methomyl 1200 times. The main agents to control red spiders are: 20% Guang Kewei 1000 times liquid, 50% cotton bell treasure EC 800x liquid and so on. Click to get more peanut planting techniques click to get more food crop planting techniques