Microbial Insecticides- An Ecofriendly Effective Line of Attack for Insect Pests Management | |
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( Volume 1 Issue 2,August 2015 ) OPEN ACCESS | |
Author(s): | |
Muhammad Sarwar | |
Abstract: | |
This paper outlines the existing formal familiarity on the possible usage of microbial insecticides in control of global insect pests. On agricultural and horticultural crops, the several insects species are common, and economically important pests are apparently colonized by microbes called entomopathogens. Essential groups of microbes that parasitize insects are the bacteria, viruses, fungi, nematodes and protozoa, which have been used to control insect pests in the field. Microbial control of insects is achieved through the inundative application of allowable formulations of insect pathogenic bacteria (Bacillus thuringiensis), insect pathogenic fungi (Beauveria bassiana), insect viruses (nuclear polyhedrosis and granulosis), nematodes (Steinernema and Heterorhabditis) or protozoan (Nosema locustae). The potential benefits to agriculture and public health through the use of microbial insecticides are considerable owing to the interest based on the drawbacks associated with chemical pesticides. Microbial insecticides are available for treatment of soil, foliar and postharvest pathogens, pest nematodes, herbivorous insects, structural pests, and weeds. Any insect pathogens release metabolites, a wide array of toxins and molecules that induce changes in or modify behavior to increase the chance of insect’s death. They are generally less destructive to beneficials, cause less environmental pollution and are less acutely toxic to mammals than conventional pesticides. The quality of commercially available biocontrol agents is an important consideration. The most important single requirement for the production of microbial insecticides is a supply of reproducible, reliable and authentic cultures of the microorganism. Mass production of the selected microbial agents is a necessary prerequisite for any large-scale field application, and the methodology involved has been developed at an early stage to suit a number of different pests pathogen situations. Biological and microbial control agents are living organisms, and must not be mishandled during shipping, storage, or application. Expectedly, the new research achievements in the field of microbes might announce a future microbial insecticides era, with a new generation of broad spectrum entomopathogens. |
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