Canal(river) and ground(well) waters contain variable amounts of plant nutrients . and the number of irrigations given depend on availability of irrigation water, soil ,crop and local weather conditions .The nutrients supplied by these sources depend on nutrient content and number of irrigations given to a crop. Irrigation water has the potential to reduce the fertilizer requirement and also improve the nutrient balance in soil.It is of interest to know which crops are benefited more , which nutrients and also the source of water.