International Journal of Entomology Research

Authors
Maha S A Haridy, El–Ashram D, Shaaban Abd-Rabou

Abstract
Using of insecticides to control different insects attacking bean plants causes great effects on the ecosystem. Also, glitches in environmental balance, in addition to pollution in air, soil, and water. In this study appears effects of neem oil, lemon oil, acetamiprid, and thiamethoxam on Aphis craccivora Koch. (Hemiptera: Aphididae) insects and on its host plant faba bean. Results indicated that lemon oil, acetamiprid, and thiamethoxam were more effective in toxicity on A. craccivora compared with neem oil was 42.63% after 72 hrs, while lemon oil was 70.00% after 72 hrs. The data in this work showed to neem oil and lemon oil were less phytotoxic than acetamiprid and thiamethoxam on bean leaves. The percentage of fertility results showed that values, in general, decreased as compared to the control with water (without any treatment) and there was a significant difference between control and all treatments, and there was a significant difference between all treatments, so the highest pollen fertility percentage (96.40%) was recorded in the control then the next treatment with lemon oil (94.41%). Also, the treatment with Neem oil (93.10%) respectively. but pesticide thiamethoxam and acetamiprid were recorded (75.3%) and (72.50%) The negative effects on pollen grains sterile were estimated and compared to control, also there was a significant difference between control and all treatments, and there was a significant difference between all treatments, the highest pollen sterile percentage were in pesticides. Acetamiprid was recorded in total sterile pollens (25.30%) and then thiamethoxam total pollens (22.20%). While the natural oils recorded less effect than insecticides where neem oil was recorded (6.20%). Then lemon oil its recorded (4.30%) and in the end, it was the control (3.60%). Also, the different shapes of cells that appeared during the examination with a light microscope, also there was a significant difference between control and all treatments, and there was a significant difference between all treatments, this type of cell register in the treatment with insecticides thiamethoxam (2.50%) and acetamiprid record (2.20%) then lemon oil (1.30%) and Neem oil (0.70%) not found in control.