Productivity and Efficiency
According to the U.S. Environmental Protection Agency, water efficiency is the smart use of our water resources through water-saving technologies and simple steps. Using water efficiently will help ensure reliable water supplies today and for future generations. Topics addressed in this theme provide insights, lessons, and guidance on how diverse stakeholders are working to improve water management and reduce water use.
Productivity and Efficiency Resources
Matching Cropping Systems to Water Supply Using an Integrative Model
Published:
April 1, 1980U.S. Agency for International DevelopmentColorado State University
Matching cropping systems to available water supply is a major element in the complex process of choosing a suitable cropping system. This manual, using examples from studies conducted in Pakistan, describes an integrative mathematical model to assist in this process. The first step in evaluating...Read more
Regional focus:
PakistanSouth East AsiaConstraints on Small Farmers in the Precision Land Leveling Program in the Pakistani Punjab
Published:
December 1, 1979U.S. Agency for International DevelopmentColorado State University
A Precision Land Leveling Program (PLLP) undertaken as part of the On-Farm Water Management (OFWM) Project in Pakistan has failed to reach the small farmer. This report summarizes results of a farmer survey conducted to determine the causes of this failure and offers suggestions to improve the...Read more
Regional focus:
PakistanSouth East AsiaFarm Water Management in Upland Areas of Baluchistan
Published:
January 1, 1979U.S. Agency for International DevelopmentColorado State University
WATER LOSSES DURING DELIVERY FROM SOURCE TO THE FIELD AVERAGED 24%, WHICH IS ABOUT HALF AS MUCH LOSS AS IN THE PUNJAB. THIS RESULTS FROM WATERCOURSES BEING SHORTER AND OPERATING WATER SURFACE LEVELS THAT ARE COMMONLY LOWER THAN THE SURFACE OF ADJACENT LANDS. HIGHER COST OF WATER RESULTS IN FARMERS...Read more
Regional focus:
PakistanSouth East AsiaResearch - Development Process for Improvement of on - Farm Water Management
Published:
June 1, 1977U.S. Agency for International DevelopmentColorado State University
A research-development process for rapid improvement of on-farm water management through technology transfer is described. The process focuses on systematic research to identify problems, develop and assess solutions, and implement development programs at the farm level. An interdisciplinary team...Read more
Institutional Framework for Improved on - Farm Water Management in Pakistan
Published:
January 1, 1976U.S. Agency for International DevelopmentColorado State University
Sufficient data has been collected and analyzed to define some of the major irrigation water management problems in Pakistan, as well as the technologies that could be employed to correct many of these problems. Thus, there is a strong basis for undertaking a program of improved on-farm water...Read more
Regional focus:
PakistanSouth East AsiaProgram for Computing Equilibrium Solution Composition in Caco (,3) and Caso (,4) Systems from Irrigation Water Compositions
Published:
October 1, 1973U.S. Agency for International DevelopmentColorado State University
A computer program was developed to calculate equilibrium solution compositions in calcareous and gypsiferous systems. The calculations in the program are based upon published solubility products of calcite and gypsum and take into account ion-pair formation and the solubility enhancement of...Read more
Steady and Unsteady Flow of Fresh Water in Saline Aquifers
Published:
June 1, 1972U.S. Agency for International DevelopmentColorado State University
Problems of flow involving fresh water overlying saline water in aquifers and methods for their analysis are reviewed. Equations amenable to mathematical solution generally involve the idealization of treating the fresh water as a distinct zone separated from the underlying saline water by a sharp...Read more
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