In the short water supply environment of Pakistan, farmers try to minimize the gap between demand and supply of canal water by extracting groundwater for irrigation purposes. However, saline groundwater upconing may occur in response to fresh groundwater withdrawals from unconfined aquifer underlain by salty groundwater. Skimming well technology can help in controlling this upconing phenomenon. However, in most cases, the small discharges of such wells cannot be efficiently applied on surface irrigated croplands. Pressurized irrigation systems use small discharge effectively, but the cost and availability of equipment in the local market is a significant constraint. Root zone salinity is also expected to increase if this skimmed groundwater is used for irrigation purposes, particularly in the absence of proper salinity management practices. To address these issues, International Water Management Institute (IWMI), Water Resource Research Institute (WRRI) of National Agricultural Research Centre (NARC), and Mona Reclamation Experimental Project (MREP) of Water and Power Development Authority (WAPDA) collaborated to undertake an applied research Project on Root Zone Salinity Management Using Fractional Skimming Wells with Pressurized Irrigation. This project, which started in March 1999, and concluded in June 2003, was funded under the Research Sub-Component of the National Drainage Program (NDP).
|Place of Publication||Pakistan|
|Number of pages||80|
|Publication status||Published - 2004|