In present climatic scenario several factors are expected to affect clusterbean (Cyamopsis tetragonoloba (L.) Taub.) yield parameters, yield and gum content. This is also likely to change crop production practices, especially those related to crop sowing environment and stress management. An experiment was conducted during kharif season of 2014-15 with objectives of this study were to: (a) investigate the impact of changing sowing environments, as an adaptation strategy to current climatic scenarios and (b) simulate the effect of bio-regulators on crop productivity. This paper investigates normal (15 July) and late (30 July) sowing environments and foliar spray of thiourea (500, 1000 ppm) and salicylic acid (50, 100 ppm) at 45 and 60 days after sowing. Amongst foliar spray, significantly higher yield parameters, yield and gum content were recorded in foliar spray of thiourea 500 ppm as compared to all other bio-regulators spray level. Similarly, salicylic acid 100 ppm found statistically at par with thiourea 500 ppm foliar spray at 45 and 60 DAS.