author(s)
I Yimjenjang Longkumer, Vinod Kumar Patil, Lapynbiang Khongrymmai and Abhinandan Singh

abstract
Bacillus thuringiensis (Bt) has been extensively employed as formulations as well as in genetically modified crop in insect pest management due to its safe environmental and human health records on contrast to chemical pesticides which impedes the efficacy of optimum management of natural enemies to the pest inherently found in abundance and also pose a hazard to the environment. With the incessant revolutionary technology development Bt emerges to be a cornerstone in the management techniques with a high host specificity. Being the most implemented bioagent among the biopesticides with the fact of producing parallel efficacy with some chemical pesticides, the application of Bt cannot be ignored.Here, we review the impact and application of Bt technology and the countermeasures that have been introducedto reduce the evolution of resistant in insect populations.