The cotton belt of Punjab, which is primarily canal irrigated, the brackish underground waters being usable with caution. Some of the experiences in evaluation of water management technologies developed at Ludhiana during seventies, tested on farmers fields at village Jai Singhwala were documented earlier. In pursuance, several field experiments were conducted at the research farm under the AICRP on Water Management during the last two decades. As seventy per cent of the area in the state follows paddy- wheat rotation and the proportionate funds invested on research and extension pertaining to the system, the data generated from this project brought out the differences specific to the situation. Crop failures may be caused by untimely rains and or canal closures and those general during 1988, 1990, 1993 were due to large scale insect pest infestation. Pooling all experiments conducted on cotton on loamy sand and sandy loam soils on the research farm revealed little response of the kharif crops, cotton and guar, yields on the water expense of the crops. However, the rabi crops wheat, raya, barley, sunflower and toria yields gave some correlations with the respective water expense. On loamy sand soils, the regression coefficients of yields and water expense were 0.29 in wheat, 0.29 in raya, 0.895 in sunflower following cotton, 0.398 in sunflower following guar and toria, and 0.95 in toria. On the sandy loam soils, the values were 0.51 in wheat, 0.73 in barley, 0.895 in sunflower following cotton and 0.59 in gram. The wheat yields in the region are lower as the sowing of wheat gets delayed because of cotton. Wheat yields have a quadratic relationship with the accumulated heat units and are therefore lower than under the paddy-wheat system Considering, the increased awareness to sustain agriculture and the related. industry in the region, the programme of the Project has been modified to water management in short duration early maturing hybrid cotton, which will also enhance the sowing of wheat and thus increase its yield and water use efficiency; drip irrigation and the optimal ground water use.