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

Maximum Water Delivery in Irrigation

Published: 
August 1, 1971
U.S. Agency for International DevelopmentColorado State University
In order to increase the water delivery efficiency of an existing irrigation system, it is proposed that modern mathematical optimization techniques be applied to the management of irrigation water delivery. A deterministic mathematical model is developed to simulate the events that occur in...Read more

Food Habits of the White Amur Stocked in Ponds Alone and in Combination With Other Species

Published: 
July 3, 1971
U.S. Agency for International Development
White amur, when stocked alone at rates of 40 (or more) per acre, effectively eliminated Chara spp., Potamogeton diversifolius, and Eurasian milfoil in less than 99 days, and caused a decrease in the amount of water hyacinths in 0.1-acre earthen ponds. Under these conditions, their diet consisted...Read more

Fisheries: A Selected List of References for Aid Technicians

Published: 
June 1, 1971
U.S. Agency for International Development
While AID reports and documents are the primary focus of this bibliographic series, other materials covering the work of international agencies, and various foundations and organizations in !.he field of technical assistance are included to a limited extent. AID employees should be able to benefit...Read more

Comparative Study of Well Irrigation in Aligarh District, India

Published: 
May 1, 1971
U.S. Agency for International Development
The use of new technology in Indian agriculture has resulted in increased use of fertilizer and water. The major objectives of this study are: 1) estimate returns to water use at difference levels of application and under varying farm operating conditions; 2) to analyze differences in cropping...Read more
Regional focus: 
IndiaSouth East Asia

Check - Drop - Energy Dissipator Structures in Irrigation Systems

Published: 
May 1, 1971
U.S. Agency for International DevelopmentColorado State University
There is a large volume of available literature regarding small energy dissipator structures. Existing publications present basic information for particular types of structures. This information has been compiled in order to present present-day available design information. Also, research topics...Read more

Inland Fisheries Progress in Thailand 1970

Published: 
February 15, 1971
U.S. Agency for International Development
This report identifies the progress on the fisheries program in Thailand in 1970 and the future opportunities to increase fish production even more. This includes evaluating different fish species and identifying the important ingredients for highly productive fish culture feeds.Read more
Regional focus: 
ThailandEast Asia and Pacific

Requirements for Irrigation of Sugar Cane, Santa Cruz, Bolivia

Published: 
January 1, 1971
U.S. Agency for International Development
This study is presented in order that a proposed irrigation development in the vicinity of Santa Cruz may be further evaluated. It has been proposed that an important area of sugar cane be irrigated from wells to be developed using groundwater. In order to define the feasibility of the proposed...Read more
Regional focus: 
BoliviaLatin America and the Caribbean

Development of Color Pattern in Pond - Reared Young of Five Micropterus Species of Southeastern Us

Published: 
January 1, 1971
U.S. Agency for International Development
Six stocks of Southeastern Micropterus were spawned in earthen ponds, including wild-caught adults of M. coosae (Alabama and Apalachicola races), M. p. punctulatus, M. punctulatus henshalli, and M. notius, and hatchery stock of M. dolomieui. Fry were reared in earthen ponds provided with Pimephales...Read more
Regional focus: 
United StatesNorth America

Fish Behavior and Its Use in the Capture and Culture of Fishes

Published: 
January 1, 1971
U.S. Agency for International Development
The commercial aquaculture or fish farm shows great promise as a source of low cost, high quality protein. However, as few reliable data on costs and returns to the industry exist, before investment decisions are made, certain critical factors such as water quality, species selection, and...Read more
Regional focus: 
United StatesNorth America

The Potential for Fishery Development in the Caribbean and Adjacent Seas

Published: 
January 1, 1971
U.S. Agency for International Development
This report begins with a brief geographical and political history of the area and then discusses at greater length the various kinds and characteristics of fish in the Caribbean. The best source of information about the fish resources of the Caribbean has been the extensive investigations of the...Read more
Regional focus: 
United StatesNorth America

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