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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 72, No. 1, 2012, pp. 147-151
Bioline Code: cj12023
Full paper language: English
Document type: Note
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 72, No. 1, 2012, pp. 147-151

 en TOXIC AND REPELLENT EFFECT OF HARMAL ( Peganum harmala check for this species in other resources L.) ACETONIC EXTRACT ON SEVERAL APHIDS AND Tribolium castaneum check for this species in other resources (HERBST)
Salari, Elham; Ahmadi, Kamal; Dehyaghobi, Reza Zamani; Purhematy, Amin & Takalloozadeh, Haji Mohammad

Abstract

To reduce the dependence on the sometimes unwise use of synthetic pesticides in fruit and vegetable plantations, the toxicity and repellence of Peganum harmala check for this species in other resources L. (Zygophyllaceae) acetonic seed extract was assayed against several insect pests. For contact toxicity, 3- to 4-d-old individuals of Aphis fabae check for this species in other resources Scopoli, A. gossypii check for this species in other resources Glover, A. nerii check for this species in other resources Boyer de Fonscolombe, and Myzus persicae check for this species in other resources (Sulzer) were included, as well as 1- to 7-d-old adult Tribolium castaneum check for this species in other resources (Herbst). Repellent effect experiments were conducted on adult, 1- to 2- and 3- to 4-d old M. persicae individuals. At 60 mg mL-1, the topical bioassay mortality percentage was significantly higher in A. gossypii than in A. fabae and A. nerii after 12-72 h. Mortality of the treatments on M. persicae was 87.1% and 90.0% after 24 and 48 h, respectively, and significantly higher than A. fabae and A. nerii during this period. At 60 mg mL-1, the mortality of T. castaneum was much lower than that of the aphid species. The highest repellent index (over 72%) was observed on 1- to 2-d-old M. persicae individuals.

Keywords
Peganum harmala, topical bioassay, aphid species, Tribolium castaneum, Aphis fabae, Aphis gossypii, Aphis nerii, Myzus persicae

 
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