The bean pod borer is the larvae infestation period from August to October every year. The adults are phototaxis, and the eggs are scattered on the tender horns, flowers and petioles. The newly hatched larvae eat into the tender horns or flowers, causing the flowers and horns to fall off. The larvae have the habit of coming out at night and being backlit. They hide in flower organs, beans or curled leaves during the day, expelling insect dung to block the boreholes. Except for rainy days and sporadic activities during the day, they usually begin to crawl through the wormholes in the evening. Go out and stop going out in the early morning of the next day. Prevention and control measures: remove the fallen flowers and corners in the field, and remove the damaged leaves and beans to reduce the source of insects. Set up a black light lamp and use the phototaxis habit of adults to trap and kill. The medicament is 5% fipronil 2000 times liquid, 40% fenvalerate 6000 times liquid, 2.5% deltamethrin 3000 times liquid and other medicines, sprayed once every 10 days. Leaf miners are harmful by larvae sneaking into the leaves. They eat the leaf flesh and leave only the epidermis, forming a tortuous tunnel, which affects plant growth. Leafminer flies mainly damage peas, beans, cowpeas, cabbage, broccoli, cabbage, rape, radish, lettuce, tomatoes, eggplants and potatoes. Control measures: Adopt sticky insect board to trap and kill the adults. The adults lay eggs on the back of the leaf and spray the back of the leaf. At the beginning of the larval damage, choose insecticides with both systemic and contact effects, such as 48% lesbian EC 800-1000 times liquid, and spray it continuously for 2 to 3 times. The spider mites on the red spider beans are also called spider mites. August to September is the peak season. Tetranychus mites feed on tender leaves, and the leaves shrink and fall easily. At the initial stage, the leaf surface turns red after chlorosis and white, and the fine wire mesh on the back of the leaf can directly see the scope and area of ​​the occurrence. Immediately after the occurrence, spray a pesticide enclosure with a sprayer, the scope of which is slightly larger than the occurrence area, and then thoroughly spray the plants in the enclosure to prevent the spread of red spiders. Control measures: 20% compound Liuyangmycin EC 1000 times liquid, 1.8% abamectin EC 1500-2000 times liquid, 15% Pyridaben EC 3000 times, 20% Miteke EC 2000 times, etc. can be sprayed. Pay attention to the rotation of medications and use high-efficiency, low-toxic biological pesticides. Tuya Video Doorbell,Smart Doorbell Night Vision,Night Vision Doorbell,Camera Wireless Doorbell Shenzhen Zuomi Technology Co., Ltd. , https://www.zuomicamera.com
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