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

Abstract

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.

Histopathological studies of red palm weevil Rhynchophorus ferrugineus, (Olivier) larvae and adults to evaluate certain nano pesticides

“…Many investigations have been conducted on the oil effects (Schmutterer and Ascher, 1984;Nassar, 1995;Bream et al 2001;Butterworth and Morgane, 1968;Zanno et al, 1975). They may also disrupt growth; inhibit mounting (Garcia and Rembold, 1984;Dorn et al, 1986) and oogenesis (Steets, 1976;Rembold and Sieber, 1981;Senthilnathan and Saehoon, 2005).…”

“…Chemical control considered as main for rapid treatment of infected palm trees which is one of the most effective methods in pest control (Al Dawood et al, 2013;Abdel-Salam et al, 2014). Several reports indicated the success of chlorpyrifos and imidacloprid in control R. ferrugineus (Abuzuhairah et al, 1996;Abraham and Vidyasagar, 1992;Cabello et al, 1997;Kaakeh, 2006;Dembilio et al, 2014).While others recommended using nano imidacloprid in control some pests (Sabbour, 2015;Assemi et al, 2014). In previous investigation (Abdelfattah et al, 2019) evaluated the tested pesticides and their nanoparticles in a laboratory and field and found them effective and recommended.…”

Evaluation of Conventional and Nanoemulsion Formulations of Some Insecticides Against the Cotton Aphids, Aphis Gossypii Glover (Hemiptera: Aphididae).

“…In our results, the insecticide lambda-cyhalothrin was the most effective insecticide against the cotton aphids, A. gossypii, in agreement with the results of Kandil et al (2022), who found lambdacyhalothrin (with an LC50 of 0.021 µg/mL) was the most effective insecticide against cowpea aphids, followed by cypermethrin, (0.056 µg/mL) dinotefuran (0.89 µg/mL), acetamiprid (0.95 µg/mL), and thiamethoxam (3.82 µg/mL). Also, in this respect, Assemi et al (2014) found that the nano-pesticide of imidacloprid (0.512 ppm) was much more effective, around five times higher than synthetic (2.56 ppm) after 24 hours of application against Myzus persicae in laboratory bioassay. The current results are in harmony with the results of Zeng et al (2016), who studied the toxicity of imidacloprid and cyantraniliprole against Myzus persicae and estimated the fifty lethal concentrations by 12.726 and 1.691 ppm for cyantraniliprole and imidacloprid, respectively.…”

Using Citronella to Protect Bees (honeybee Apis mellifera L.) from certain Insecticides and Their Nano Formulations

“…Rising interest occurred recently with nanopesticides. Nano-imidacloprid has been used to control several insects (Sabbour, 2015;Assemi et al, 2014). This study refers to using citronella could be very effective especially when we use nicotinoides pesticides, in order to repel bee and keep them safe.…”