Rice is one of the most important food crops grown worldwide. Though we use almost of the improved agronomic practices, we can not get optimum production and productivity. The reason behind its low productivity includes several factors. Among them insect pest infestation is prime and most important one. Among several insect pests, pests of lepidopteran order such as yellow stem borer and leaf folder are considered as most destructive and responsible for severe yield losses. As the larva are found inside the stem or within the leaf fold, cultural, mechanical, physical methods of pest management are not as effective as chemical control in reducing the pest population. So the present investigation was carried out in order to find out the efficacy of certain chemicals against lepidopteran pests infesting rice.

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