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Vol.No.7 (1) January - July 2003

Assessment of Nitrate Leaching in Wheat-Maize Cropping System: Abid Niaz, M. Ibrahim and M. Ishaq	1
Effect of Chloride (Cl‾) and Sulphate (SO4‾2) Ions on Solution Chemistry of Salt-Efflorescence from Desertic Soils of Punjab, Pakistan Abid Niaz, S. A. Shahid and S. Javid	7
Impact of Utilization Factor on the Estimation of Groundwater Pumpage A. S. Qureshi and M. Akhtar	17
Influence of Lower Swat Canal Irrigation System Operation on Water Management Practices at Tertiary Level J. A. Tariq and M. J. Khan	29
Modeling for Efficient Use of Canal Water at Command Level W. A. Jehangir, M. Ashfaq and A. Rehman	43
Estimation of Surface Heat Fluxes in the Indus Basin Using ASTER Imagery A. Sarwar and R. Bill	53
Crop Rotations to Reclaim Abandoned Soils M. A. Kahlown, Z. I. Raza and M. Hanif	65
Common Weeds of Wheat and Their Control R. Ahmad and A. S. Shaikh	73

Vol.No.7 (2) July - December 2003

Effect of Electricity Pricing Policies on Groundwater Management in Pakistan A. S. Qureshi, M. Akhtar and A. Sarwar	1
Effect of Planting Patterns on Water Use Efficiency and Agronomic Characteristics of Maize (Zea mays L.) S. H. Shah, F. Ahmad, M. F. Saleem and S. I. Zamir	11
Evaluation of Chinese Raingun Py1-30 with Different Nozzle Sizes A. A. Shauq	15
Groundwater Quality of Deep Wells as Affected by Long Term Pumping M. A. Kahlown	21
Irrigation Scheduling of Maize Crop by Pan Evaporation Method J. A. Tariq, M.J. Khan and K. Usman	29
Salt Distribution in Saline-sodic Soil Under Different Irrigation Levels: High Brackish Groundwater M. R. Chaudhry	37