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

Increasing Fish Production By Improved Fishcultures, Terminal Report

Published: 
August 30, 1973
U.S. Agency for International Development
"Increasing Fish Production by Improved Fishcultures" is an extension of a prior USAID project which is in need of further technical services in aquaculture and other fishery fields. Due to greater detail and effort this is a more technical project than prior reports.Read more
Regional focus: 
East Asia and Pacific

Annual Report for FY 1973

Published: 
August 15, 1973
U.S. Agency for International Development
This annual report details the work that was done at the International Center for Aquaculture from July 1972 through June 1973. It identifies the accomplishments over the year in topics including recent publications, data on worldwide food fishes, utilization of international resources, economic...Read more
Regional focus: 
United StatesNorth America

Trickle Irrigation Soil Water Potential as Influenced By Management of Highly Saline Water

Published: 
July 19, 1973
U.S. Agency for International Development
Although trickle irrigation offers the possibility of obtaining comparatively good yields when nontoxic highly saline water is used for irrigation, the subsequent accumulation of salts in the root zone is a potential hazard that should not be disregarded. The objective of this investigation was to...Read more

Effect of Agricultural Use on Water Quality for Downstream Use for Irrigation

Published: 
July 1, 1973
U.S. Agency for International Development
Studies the effect of irrigation return flow on downstream irrigation water quality in the Sevier, Colorado, and Rio Grande river systems, and in the Imperial Valley of Southern California. The report begins by reviewing significant literature on irrigation return flow. Next, water quality criteria...Read more
Regional focus: 
United StatesNorth America

Strategy for Optimizing Research on Agricultural Systems Involving Water Management

Published: 
July 1, 1973
U.S. Agency for International Development
The rationale for a model for optimizing agricultural systems through knowledge transfer is developed and presented. The model attempts to disaggregate the environment into significant components which are also measurable. It uses crop production as the overall integrator of the agricultural system...Read more

Chemical Oxygen Demand of Waters and Biological Materials from Ponds

Published: 
July 1, 1973
U.S. Agency for International Development
The rate of oxygen consumption by organisms in pond waters, as measured by a dark bottle technique for a 24-hr period, increased with increasing chemical oxygen demand (COD). Rate of oxygen consumption increased with temperature between 15 and 35C (Q values were 1.5 to 2.0). At the same level of...Read more

Fish Culture Extension Project: Brazil, Dec. 1972-June, 1973

Published: 
June 20, 1973
U.S. Agency for International Development
Major progress towards implementing a self-sufficient extension service within the DNOCS Directorate of Fisheries and Fishculture was made during the second semester of the present contract. The most meaningful advance was the naming of a permanent, trained DNOCS fishculturist to head the fish...Read more
Regional focus: 
BrazilLatin America and the Caribbean

Irrigation and Non-Irrigation Alternatives for Reducing Sugar Cane Transportation Costs in Santa Cruz, Bolivia

Published: 
June 1, 1973
U.S. Agency for International Development
The purpose of the study was to investigate possible cost-reducing options for sugar cane transportation in Santa Cruz. Physical factors and costs involved in the production of cane, transportation costs, locations and distances of growers from mills, and volume of cane transported constitute the...Read more
Regional focus: 
BoliviaLatin America and the Caribbean

Amino Acid Composition of Freshwater Algae

Published: 
June 1, 1973
U.S. Agency for International Development
The protein content of 13 species of freshwater algae ranged from 10.50 to 46.35 g/100 g dry wt. Proportions of individual amino acids in the protein of the different species were remarkably similar. Differences in protein content will influence the efficiency with which algal tissues are utilized...Read more

Vitamin C and Crooked Back Disease

Published: 
May 1, 1973
U.S. Agency for International Development
On many occasions in recent years -- since commercial catfish culture has become an important endeavor -- fish disease personnel at Auburn University and at other research and diagnostic laboratories have examined catfish which showed disease symptoms without signs of disease-causing organisms. The...Read more

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