EFFECT OF SOME SAFE BIOCIDES ENVIRONMENTALLY ON SENSITIVITY OF DIFFERENT STRAINS OF MEDITERRANEAN FRUIT FLY

Abstract

Toxicity and physio-toxic actions of certain bio-pesticides (Emaskim 1.9%EC, Proclaim 5%SG, Radiant 12%SC and Spintor 24%SC) was evaluated with different concentrations as contact poisons or in sandy soil against both larval and pupal stages of three strains (Giza, Qaluobiya governorates and Laboratory strains) of C. capitata under laboratory conditions. 1. Toxicity of Certain bio-pesticides Against Some Immature Stages of Ceratitis capitata Under Laboratory Conditions: 1.1. Surface contact treatment: 1.1.1. Full grown larvae: 1.1.1.1. Giza governorate strain: Spintor 24%SC was the most effective compound as contact toxicant to full grown larvae of C. capitata of Giza governorate strain at both LC50 and LC90 followed by Proclaim 5%SG, Radiant 12%SC and Emaskim 1.9%EC. The LC50 and LC90 values were 129.633, 161.968, 199.649, 313.615 and 869.446, 954.436, 1114.517, 1375.458 ppm, respectively. Proclaim 5%SG and Radiant 12%SC nearly had the same values of slope (1.667 and 1.716, respectively). Toxicity index at both LC50 showed that Spintor 24%SC was the standard toxicant. The descending efficiency of the other compounds was 41.34, 80.04 and 64.93% for Emaskim 1.9%EC, Proclaim 5%SG and Radiant 12%SC, respectively, while it was 63.21,91.10 and 78.01% at LC90 for the som bio-pesticides.