Use of biorational insecticides for the management of storage insect pests: A review


  • Sovit Parajuli Faculty of Agriculture, Agriculture and Forestry University (AFU), Rampur, Chitwan, Nepal
  • Aavash Adhikari Faculty of Agriculture, Agriculture and Forestry University (AFU), Rampur, Chitwan, Nepal
  • Sandip Paudel Faculty of Agriculture, Agriculture and Forestry University (AFU), Rampur, Chitwan, Nepal
  • Dipesh Oli Faculty of Agriculture, Agriculture and Forestry University (AFU), Rampur, Chitwan, Nepal
  • Sagar Bhandari Institute of Agriculture and Animal Science, Campus of Live Sciences, Dang, Nepal
  • Jiban Shrestha Nepal Agricultural Research Council, National Plant Breeding and Genetics Research Centre, Khumaltar, Lalitpur, Nepal



grain infestation, microbials, pheromones, botanicals, natural enemies


Pests of various species cause havoc on storage grains, resulting in both qualitative and quantitative grain losses. Insect pests feed stored grains and reduce the weight, nutritional content, and germination of these grains. Contamination, odor, mold, and heat damage are also caused by infestations, decreasing the grain’s quality and rendering it unfit for human or animal consumption. Commercial grain buyers might choose between refusing to accept insect-infested grain or paying a reduced price for it. Various pest management practices have been tried. The emergence of insecticidal and fungicidal resistance, as well as damage to non-target organisms and acute and chronic effects on humans and the environment have necessitated the use of biorational methods over chemical control of storage-product pests. The term biorational refers to several products that are relatively non-toxic and have few environmental adverse effects. Biorational techniques, such as the use of microbials, pheromones, and food attractants, natural enemies, botanicals, and biological control, were used as alternatives to chemical pesticides for suppressing and controlling storage-product pests. To ensure food security and agricultural sustainability, the use of such biorational chemicals is unavoidable.


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