Cotton at early squaring stage was artificially infested with cotton fleahoppers and plant response was monitored in furrow and drip irrigated cottons. Three consecutive releases of two levels of fleahopper nymphs resulted in differential fruit loss during the crop growth period. Percentage fruit loss recorded at 65 DAP in bug-treated plots were 23 and 31% compared to 4 and 6% in sprayed control plots in furrow and drip irrigated plots, respectively. No significant variation in height-node ratio was observed during the growing season. Records on peak blooming period shows a considerable delay in bug-infested plots as compared to control. It is not yet clear if this difference in blooming will lead to delay in plant maturity. Final observation on yield contribution will be taken and response of plant under two different environments will be assessed for their compensation ability to square loss.