An experiment was conducted during the rabi 2010-2011 at IARI, New Delhi to analyze the effect of hydrogel granules in maintaining soil moisture at root zone depth and thus to determine the influence of same granules on crop growth parameters in wheat crop. Three hydrogel sizes namely MS 18 (0.85 mm), MS 25 (0.60 mm), MS 36 (0.42 mm) were selected for field application through designed mechanical hydrogel applicator to achieve recommended hydrogel application rate i.e. 3 kg per hectare. Seven treatments which consisted of application of three sizes of pure hydrogel, another three treatments are of hydrogel sizes mixed with recommended sand and a control treatment i.e. without application of hydrogel. The results revealed that highest yield of 3.8 ton/ha was found in treatment T3 (hydrogel size MS 36 plot) and the maximum harvesting index was observed in T4 treatment i.e. 43.32 % when compared to the remaining treatments. It was observed that there was an average 22% increase in grain yield with a significant R2 value 0.79 when the data was statistically analyzed at 5% level with Randomized Block Design (RBD) for hydrogel applied area with control plot. Results also shown that, the number of irrigations required in wheat crop could be reduced from five to three due to hydrogel application.