Application of Operations Research in the field of agriculture has been the theme of the study. Operations Research can be applied to the agricultural sector via day to day decisions such as choosing a feed combination for animals, management of agricultural process right from sowing seed to selling of produce in the market, predicting the risk of nature and safeguarding costs etc. For these applications various techniques come handy, as the purview of the study has to be limited, we have explained 4 major technique that can be used for farm management in order to garner profits and maintain efficiency. The 4 major techniques are; Linear programming, Game theory, Network analysis and Waiting line theory.