Journal of Plant Diseases and Protection (2009) 116, 283-287

A.A. Sallam, C. Volkmar and N.E. El-Wakeil (2009)
Effectiveness of different bio-rational insecticides applied on wheat plants to control cereal aphids
Journal of Plant Diseases and Protection 116 (6), 283-287
Abstract: The efficacy of range of compounds: three botanical insecticides (NeemAzal T/S, Trifolio S-forte and an extract of Quassia amara L.) and two pyrethroid insecticides, lambda-cyhalothrin (Karate 9.4% S.C) and deltamethrin (Decis 2.8% E.C.) were evaluated to control Rhopalosiphum padi (L.) and Metopolophium dirhodum (Wlk.). Different concentrations were used to study efficiency of the tested compounds on both aphid species 24, 48 and 72 hours post treatment in the laboratory. Bio-residual activity of these compounds was evaluated on wheat plants in the greenhouse. M. dirhodum was more susceptible than R. padi in all treatments. The mortality reached 100% after 24 h in M. dirhodum and after 48 h in R. padi . Most of the tested compounds caused acceptable levels of cereal aphid's control. A sharp decrease in persistence of the bioactivity of tested compounds against the 4^thinstar of R. padi and M. dirhodum was noticed after 7 days from application. Bio-residual activity declined with days, started with more than 80% on zero time and reached 12% after 7 days in Decis, while it was 70% on zero time and reached 10% after 7 days in Karate. Decis, Karate and NeemAzal T/S are considered the most effective in controlling cereal aphids.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Nabil E. El-Wakeil

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rhopalosiphum padi	Wheat (Triticum)
	Metopolophium dirhodum	Wheat (Triticum)