JOURNAL OF IRRIGATION & DRAINAGE ENGINEERING
Volume 125 , Number 2 , March/April 1999
TECHNICAL PAPERS
Evapotranspiration: Concepts and Future Trends
Luis S. Pereira, Alain Perrier, Richard G. Alien, and Isabel Alves ........................... 45
Subirrigation Systems to Minimize Nitrate Leaching
J. Wambua Kaluli, Chandra A. Madramootoo, Xiaomin Zhou,
Angus R MacKenzie, and Donald L. Smith ............................................. 52
Controlling Irrigation Water Flow to Mole Drains
E. W. Christen and G. Spoor ........................................................ 59
Effects of Temperature Changes on Emitter Discharge
Leonor Rodriguez-Sinobas, Luis Juana, and Alberto Losada............................... 64
Estimation of Hydraulic Diffusivity in Stream-Aquifer System
Govinda C. Mishra and Sharad K. Jain. ............................................... 74
Effective Hydraulic Conductivity for Partially Saturated Porous Media
Amithirigala W. Jayawardena and Pujitha B. G. Dissanayake.............................. 82
TECHNICAL NOTE
Baffle Sluice Modules with Improved Performance
ArifA. Anwar.................................................................... 91
DISCUSSIONS
Irrigation Performance Measures: Efficiency and Uniformity
C. M. Burt, A. J. Clemmens, T. S. Strelkoff, K. H. Solomon, R. D. Bliesner, L. A. Hardy,
T. A. Howell, and D. E. Eisenhauer
By John L. Merriam. Closure by C. M. Burt, A. J. Clemmens, K. H. Solomon,
T. A. Howell, and T. S. Strelkoff...................................................... 97
Estimation of Global Irrigation Distribution Uniformity
A. J. Clemmens and K. H. Solomon
By John L. Merriam. Closure by Authors .............................................. 100
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
Volume 125 , Number 3 , May/June 1999
TECHNICAL PAPERS
Economics of Furrow Irrigation under Partial Infiltration Information
H. lto, W. W. Wallender, and N. S. Raghuwanshi ......................................... 105
Development of Management Models for Sustainable Use of Coastal Aquifers
Amian Das and Bithin Datta ........................................................................ 112
Vadose Zone Flow and Transport in Cracked Heavy Textured Soil
Bhaskar Joshi and Charles Maule............................................................. 122
Irrigation Offtake Sensitivity
D. Renault and H. M. Hemakumara ........................................................ 131
Offtake Sensitivity, Operation Effectiveness, and Performance of Irrigation System
D. Renault.................................................................................................... 137
Regional Regression Models of Annual Streamflow for the United States
Richard M. Vogel, lan Wilson, and Chris Daly........................................... 148
TECHNICAL NOTE
Modeling Water Uptake by Plant Roots
Shashi Mathur and Sandhya Rao ............................................................... 159
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JOURNAL OF IRRGATION AND DRAINAGE ENGINEERING
Volume 125 , Number 5, September/October 1999
TECHNICAL PAPERS
Single-Layer Evapotranspiration Model with Variable Canopy Resistance
Miaden Todorovic 235
Transient Drainage to Partially Penetrating Drains in Sloping Aquifers
K. N. ShukLa, H. S . Chauhan, and V, K. Srivastava 246
Nitrate Dynamics under Cyclic Irrigation Pumpage
Chittararijan Ray and Walton R. Kelly 254
Infiltration Considerations for Ground-Water Recharge with Waste Effluent
Sandra L. Houston, Peter D. Duryea, and Ruijin Hong 264
Explicit Volume Balance Model Solution
A. A. Alazba 273
Friction Correction Factors for Center-Pivots
Arif A. Anwar 280
Control of Canal Flow by Adjoint Sensitivity Method
Brett E Sanders and Nikolaos D. Katopodes. 287
Sewer Sideweir with Throttling Pipe
Gluseppe Del Giudice and Willi H. Hager, 298
TECHNICAL NOTES
Sediment Removal Efficiency of Settling Basins
K, G. Ranga Raju, U. C. Kothyari, Sornya Srivastav, and Manish Saxena 308