|Author:||Muhammad, Ashraf ; Saeed, M. M.|
|Book Group Author:||NA|
The salinity in the root zone increases with the application of relatively saline groundwater. Therefore, a limited water supply coupled with high pumping cost and salinity hazards, makes it more important than ever that irrigation water be used efficiently and judiciously. In the present study conducted in Bhalwal area in the Indus basin of Pakistan during 2000-2002, farmer's practices of irrigation application methods (Field 1) were compared with the water saving techniques (Field 2) for crop yield and salinization for two years with maize-wheat-dhanicha cropping pattern. For maize crop, regular furrow method of irrigation was used in Field 1 and alternate furrow method of irrigation was used in Field 2. For wheat experiments, basin irrigation method of water application was compared with bed and furrow method. For dhanicha, basin irrigation was applied in both the fields. The results showed that approximately 36% water was saved by applying irrigation water in alternate furrows in each season without compromising the maize crop yield. The salt accumulation in root zone in alternate furrow field was less than that in regular furrow field. The salinity level near the surface increased substantially in both the fields. The water saving in wheat crop under bed and furrow was 9-12% in both seasons. The salinization process in both fields during wheat crop was almost same except redistribution of salts throughout the root zone in basin field of wheat. The salinity developed in root zone during two major growing seasons was leached in monsoon.
|Pages:||111 - 124|
|Journal:||Irrigation and Drainage Systems|
crop yield, cropping systems, furrow irrigation,groundwater, indigenous knowledge, irrigation water, maize, salinewater, salinization, soil salinity, water conservation, wheat, Pakistan,Sesbania aculeata, Sesbania cannabina, Triticum, Triticum aestivum, Zeamays, South Asia, Asia, Developing Countries, Commonwealth of Nations,Sesbania, Fabaceae, Fabales, dicotyledons, angiosperms, Spermatophyta,plants, Triticum, Poaceae, Cyperales, monocotyledons, Zea, Erosion; Soiland Water Conservation (PP400), Social Psychology and SocialAnthropology (UU485) (New March 2000), Field Crops (FF005) (New March2000), Plant Production (FF100), Plant Cropping Systems (FF150), SoilChemistry and Mineralogy (JJ200), Soil Water Management (Irrigation andDrainage) (JJ800) (Revised June 2002) [formerly Soil Water Management]