Symptoms and Prevention and Control of Soybean Stalked Blackfly
Occurrence time Soy bean stalks Drosophila melanogaster usually takes 4 generations a year, especially in 2 or 3 generations. Overwintering adults are in full bloom in early June. The first generation of larvae was at the end of June, and was ravaged by spring sowing soybeans. The adult period was in mid-July, when summer soybeans were allowed to multiply. The second generation of larvae is at the end of July and early August. Foraging is the first flowering period of soybeans, and the adult period is in mid-August, when soybeans bloom. The third generation of larvae in mid-August, the late flowering soybeans to the early puerperium, is also the most dangerous hazards; adulthood in the early September. The fourth-generation larvae were at the end of mid-September, and were endangered by late sowing soybeans and green beans. Prevention Agricultural prevention and control should try to use early-maturing and high-product varieties, avoid early planting in the event of agricultural errors, and increase plant resistance to pests to reduce victimization. Sweet and sour trapping and killing in the adult hairy period, put 375 grams of brown sugar, 500 ml of vinegar, 125 ml of white wine, 0.5 grams of trichlorfon and 500 ml of boiled water in the pot, put it in the field after dilution, and put 1 pot every 20 to 30 acres. At 6 to 9 o'clock, 5 to 7 o'clock in the afternoon to kill, can reduce the harm. Chemicals prevent major adult and newly hatched larvae. Use 10% Da Gongchen WP 15-20 g/mu or 40% Dimethoate 50-75 ml/mu. With 50% phoxim 50ml/mu, 50kg of water was sprayed twice every 10th day during the flowering period of pea seedlings; sprayed once every 10 days after emergence; Spray 1 time, spray 3 times. Clear Sterile Vacuum Vials are produced by aluminum caps, non-latex butyl stoppers and clear SCHOTT Neutral Type I glass vials. They are approved by cGMP and FDA with internally sterile.The production process is carried out under strict Class 100 workshop. Finished vials can meet the FDA`s authorised 14-day sterility test.Clear Sterile Vacuum Vials are used for allergist,mixing injectable products or nuclear medicine, PET-CT, Liquid collection. Clear Sterile Vacuum Vials Clear Sterile Vacuum Glass Vials,Clear Sterile Evacuated Vials,Clear Sterile Evacuated Glass Vials China Lemon Trading Co.,Ltd , https://www.lemonvial.com