Advantages And Disadvantages Of Microbial Insecticides

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Microbial insecticides
Introduction
Pest management approach, methods and discipline have undergone developments and advancements with the progress of time to reduce environmental impacts. Microbial insect control uses pathogenic microorganisms isolated from diseased insects during naturally occurring outbreaks. Usually, such epidemics only occur when pest population densities are high and usually after significant damage have been done to crops [1], [2], [3]. Over 400 species of fungi and more than 90 species of bacteria which infect insects have been described including Bacillus thuringiensis , varieties of which are manufactured and sold throughout the world essentially for the control of caterpillar pests and more recently mosquitoes
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If necessary, most microbial insecticides can be used in conjunction with synthetic chemical insecticides because in most cases the microbial product is not deactivated or damaged by residues of conventional insecticides.(Follow label directions concerning any limitation) Disadvantages of microbial insecticides :
The limitations or disadvantages listed below do not prevent the successful use of microbial insecticides. Understanding how these limitations affect specific microorganisms will help users to choose effective products and take necessary steps to achieve successful results.
• Each application may control only a portion of the pests present in a field, garden, or lawn because a single microbial insecticide is toxic only to a specific species or group of insects. If other types of pests are present in the treated area, they will survive and may continue to cause damage. Conventional insecticides are subject to similar limitations because they too are not equally effective against all pests. The negative aspect of selectivity is often more noticeable for microbials . So there is limited market for some microbial insecticides, thus these products are not widely available or are relatively

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