Nanomaterials: A Review of Their Action and Application in Pest Management and Evaluation of DNA-Tagged Particles

Abstract

Nanotechnology, a new field of research, prompted scientists to work on a wide range of aspects. Nanoparticles relating to pest management include formulation for herbicides and pesticides. The potential uses of nanotechnology in insect-pest management include the slow release, efficient dosage of insecticides, and provide diagnostic tools for early detection. Application of nanaoparticles also includes development of nanodispensers, nanogels, and nanocapsules. Effects of different inorganic nanoparticles against selected insects were evaluated under laboratory conditions. DNA-tagged nanogold caused 30.50, 57.50, and 75.00 % mortality on third, fourth, and fifth instar Spodoptera litura larvae, respectively. CdS nanoparticle caused highest S. litura larval mortality of 21.41-93.79 % at 150 and 2400 ppm, respectively. The nano-TiO2 showed maximum of 73.79 % S. litura larval mortality at 2400 ppm and the least was 18.50 % at 150 ppm. Nano-Ag caused maximum 56.89 % S. litura mortality at 2400 ppm followed by 46.89 and 33.44 % mortality at 1200 and 600 ppm, respectively. Nanoparticles coated with ecdysteroid analogues like tebufenozide and halofenozide were tested against Corcyra cephalonica. The treated eggs did not hatch due to arrest of embryonic development. Tebufenozide and halofenozide caused maximum larval mortality at 80 ppm. These two compounds at 80 ppm reduced fecundity and fertility in adults. Tebufenozide against Helicoverpa armigera larvae reduced the larval weight. Tebufenozide at 5.00 ppm was reduced the larval weight significantly (14.23 ± 1.43 and 112.35 ± 0.29, respectively) compared to control. Histopathological effects of tebufenozide at the light microscopic level showed vacuolation and inhibition of imaginal buds. At electron microscopic level,

Storage of Cereals in Warehouses with or without Pesticides

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Gel Carriers for Plant Extracts and Synthetic Pesticides in Rodent and Arthropod Pest Control: An Overview

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Coupling Biorational Tactics with Radio - Genetic F1 Sterility Technique for an Effective Integrated Pest Management against Lepidopteran Insects

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