Susceptibility of immature stages of parasitoid Habrobracon hebetor Say (Hymenoptera: Braconidae) to pesticides

Subject Areas :

Houshang  Rafiee-Dastjerdi ¹ (Assistant Professor of Plant Protection Department, University of Mohagheg Ardabili, Ardabil, Iran.)
mirjalil  hejazi ² (Associate Professor of Plant Protection Department, University of Tabriz, Iran.)
gadir  Nouri,Ghanbalani ³ (Professor of Plant Protection Department, University of Mohagheg Ardabili, Ardabil, Iran.)
mosa  saber ⁴ (Assistant Professor of Plant Protection Department, University of Maragheh, Iran.)
naser  mohebalipor ⁵ (Scientific Board of Islamic Azad University, Miyaneh Branch, and Ph.‌D. Student of Plant Breeding, University of Tabriz, Iran.)

Received: 2009-05-05 Accepted : 2009-11-01 Published : 2010-01-21

Keywords: Susceptibility, Pesticide: Habrobracon hebetor, field recommended dose,

Abstract :

Cotton bollworm, Helicoverpa armigera (Hübner) is a polyphagous pest which attacks a wide variety of agricultural crops. Habrobracon hebetor Say is one of the most important natural enemies of H. armigera in Iran. Adults of H. hebetor were obtained from insectary of Plant Protection Bureau of Bilehsavar in Ardabil Province and reared on Anagasta kuehniella larvae in laboratory. Rearing condition was 26 ± 2 ˚C, 70 ± 5 % RH, and photoperiod of 16: 8 hours (L: D). The effect of field recommended doses of Hexaflumuron, Profenofos, Spinosad and Thiodicarb were assessed on immature stages and the adult emergence of H. hebetor. Profenofos, Spinosad and Thiodicarb caused 73.62, 39, and 29.25 % reduction in adult emergence, respectively, and were classified as moderately harmful pesticides based on International Organization of Biological Control (IOBC) pesticide classification method. Hexaflumuron with 9.87 % reduction in adult emergence in spray method was classified as harmless.

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