【类型】期刊
【题名】Toxicity and field efficacy of azadirachtin against Ostrinia furnacalis Gue nee and safety evaluation to sorghum.
【作者】 JM Pearce
【关键词】 toxicity sorghum 毒力 field effect 安全性 高粱 botanical pesticide 田间防效 azadirachtin 印楝素 safety Ostrinia furnacalis Guenee 亚洲玉米螟 植物源杀虫剂
【期刊名】Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao
【摘要】[Objectives J The study aimed to study the control effect of botanical pesticide azadirachtin against Ostrinia furnacalis in sorghum. [ Methods J The activity of azadirachtin against 0. furnacalis was determined by diet incorporation method in the laboratory, the control efficacy was investigated in the three sorghum fields, and the safety evaluation on three sorghum varieties was determined by pot method. [ Results J Under indoor condition, the LC50 value of 2nd ins tar larvae was 6.44 mg· L- 1 , and the activity was relative high. The efficacy on plant protection and insect control effects in three provinces were ranged from 80.07% to 89.26% and 73.51 % to 87.31 %,and those were significantly better than control pesticides. The growth inhibition rate of 0.3% azadirachtin emulsifiable concentrate at the dosage of 18 g • hm - 2 was significantly higher than 4.5, 9 g • hm - 2 for three sorghum varieties, one plant of all three sorghum varieties showed leaf edge chlorosis,and one plant of \'Chiza No.16\' showed leaf edge chlorosis of 0.3% azadirachtin emulsifiable concentrate at the dosage of 9 g • hm - 2 after 14 d of spraying, the growth of three sorghum varieties was normal and safe for sorghum. [ Conclusions] Azadirachtin had good toxicity activity and control effect against O.furnacalis,and it was safe for sorghum.
【年份】2022
【ISSN】1000-2030
【页码】539-544
【期号】3
【作者单位】1四川省农业农村厅农药检定所ꎬ四川 成都 610041 2四川农业大学农学院ꎬ四川 成都 611130 3成都绿金生物科技有限责任公司ꎬ四川 成都 610041
【期刊卷】45
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