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Abstract

Investigation of Different Values of Nanoimidacloprid for Control of Tobacco Aphids Myzuspersicaenicotianaein Laboratory

Assemi H, Sajjadi A and Naghizadeh F

Nano-insecticides which have economic importance and high health because of its greater effectiveness compared with conventional varieties of crops are used to combat pests. Another subject which need to be researched and development in the field of nano-pesticides is pest resistance to pesticides. This phenomenon seriously reduced the number of pesticides. In this regard, in order to evaluate the performance of various amounts of nanoimidacloprid for control tobacco aphids Myzuspersicaenicotianae use emulsion-solvent evaporation was poison Nano. Transmission electron microscopy (TEM) was used to confirm the nano-size of pesticide. Nanoimidacloprid and Imidacloprid tobacco leaves at different concentrations (20, 35.156, 49.773, 70.469, 99.77, 141.253 and 200 mg) were immersed for two seconds. After drying, the leaves, the fifth in four replicates of 30 nymphs in laboratory conditions at a temperature of 25 ± 2 degrees Celsius, relative humidity 5 ± 65% of were released. POLO-PC software analysis was performed to determine the extent of LC50 and LT50.Results indicate that the LC50 levels for Imidacloprid 69.623 μl/ ml after 72 hours and Nanoimidacloprid, 37.919 (1/8 times less than that of conventional pesticides) was achieved after 24 hours. The results showed that Nano-pesticidesare more effective and toxic to insect pests, compared to conventional insecticides.