I want to calculate recharge for an aquifer for which I have calculated daily ET by Haude's method and I also have daily precipitation data. How can I calculate recharge per minutes.
This methodology won't work. Haude's method only gives a rough estimate of evaporation. Consider the hydrologic cycle: Rainfall = evaporation (or evapotranspiration) + runoff + surface detention + soil moisture storage + infiltration +/- interbasin transfer. It sounds like you don't have nearly enough data to estimate the aquifer recharge.