Cucumber is an important cucurbitaceous crop, which play an important role in our diet, due to its high nutritive value. The area and productivity of cucumber is very low, hence to maximize the production per unit of water use, adequate and timely supply of water is crucial one. Protected cultivation is frequently adopted for obtaining higher yield per unit area. The present investigation aimed with specific objectives to work out the water requirement of cucumber under shade net house, to study yield response of cucumber to different shading percentage of shade net and fertigation, to compute water use efficiency, fertilizer use efficiency and to work out the cost economics of cucumber cultivation in shade net house. Thus, the overall findings revealed that, maximum yield of cucumber Var. Gypsy, can be obtained by cultivating the crop under shade net with NPK through drip system.