Journal of Hebei University (Natural Science Edition) ›› 2016, Vol. 36 ›› Issue (6): 635-640.DOI: 10.3969/j.issn.1000-1565.2016.06.011

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Insecticidal acticity of the botanical extracts from 5 Chinese herbs against phorid flies

WANG Qian,SHI Congying,ZHANG Zheng,HUANG Zipiao,SONG Qian   

  1. Institute of Edible and Medicinal Fungi, College of Life Science, Hebei University, Baoding 071002, China
  • Received:2016-04-25 Online:2016-11-25 Published:2016-11-25

Abstract: Using the residue method,with water as the negative control,we measured the insecticidal acticity of the botanical extracts from 5 Chinese herbs against phorid flies.The results showed that in the selected five concentrations,the insecticidal activity of Stemona japonica and Sophora flavescens is significant,under 50 mg/mL mass concentration,12 h after treatment,the insecticidal activity were 85.00%,81.67%,after 24 h,reached 100.00%.Melia toosendan、Gentiana scabra,Phryma leptostachya,take second place.Through LC50 determination,the results showed that the 24 h LC50 of St.japonica and So.flavescens were 13.790 mg/mL and 18.668 mg/mL.Field control effect test showed that the extract of St.japonica and So.flavescens has good efficacy against phorid flies,the control effect is 73.66% and 71.27% after three days,around 75.00% after 7 days,compared with clear water control.We recommend in production to use 50 mg/mL St.japonica and 75 mg/mL So.flavescens alternatively, at the beginning of the phorid flies season.

Key words: Chinese herbs, phorid flies, insecticidal acticity

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