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

Essentiality of Vitamin C in Feeds for Intensively Fed Caged Channel Catfish

Published: 
January 1, 1973
U.S. Agency for International Development
Sixteen hundred channel catfish fingerlings were stocked in 1-mE3 floating cages, 400 per cage, and fed production-type diets intensively for 180 days. Half of the fish were fed a diet that was nutritionally sufficient except for being low in vitamin C and the remaining fish were fed the same...Read more

Summer Algal Communities and Primary Productivity in Fish Ponds

Published: 
January 1, 1973
U.S. Agency for International Development
The paper presents data on primary productivity and phytoplankton communities in new experimental ponds which received the following treatments; ammonium nitrate and triplesuperphosphate, triplesuperphosphate, cracked corn (10% crude protein) and Auburn No. 3 fish feed (36% crude protein)...Read more

Irrigation Requirements and Ground Water Development

Published: 
December 1, 1972
U.S. Agency for International Development
The paper presents a moisture availability index that is suggested for use in evaluating water balance conditions. It further presents a method for estimating irrigation requirements that has been evaluated using Brazilian climatic data. Comprehensive tables are provided including a detailed...Read more
Regional focus: 
BrazilLatin America and the Caribbean

Fish Culture Extension Project: Brazil, June-Nov. 1972

Published: 
November 1, 1972
U.S. Agency for International Development
The objective of the fish culture extension project is to assist DNOCS extension agents (specifically those of the Covenio USDENE/DNOCS/USAID -DPAN) in the planning and installation of pilot fish culture enterprises on private farms in Northeast Brazil for the purpose of increasing animal protein...Read more
Regional focus: 
BrazilLatin America and the Caribbean

Land and Water Use Potentials: Tungabhadra Irrigation Project, Mysore, India

Published: 
October 1, 1972
U.S. Agency for International Development
The study investigated land and water use potentials of the Tungabhadra Irrigation Project (TBP) located in one of the most sparsely settled and impoverished areas of Mysore State, India. Its objectives were to determine the most profitable crops that could be grown on the black soils in the TBP...Read more
Regional focus: 
IndiaSouth East Asia

Sources of Carbon Dioxide for Nuisance Blooms of Algae

Published: 
September 1, 1972
U.S. Agency for International Development
Bacterial production of CO2 from sucrose substrate increased growth of seven species of algae of CO2-limited laboratory cultures. Decomposition of organic matter in pond water also supplied enough CO2 to support good algal growth in cultures deprived of other sources of CO2. Estimates of CO2...Read more

Annual Report for FY 1972

Published: 
August 3, 1972
U.S. Agency for International Development
This annual report details the work that was done at the International Center for Aquaculture from July 1971 through June 1972. It identifies the accomplishments over the year in topics including inland fisheries, aquacultural developments abroad, fish breeding and genetics, fish feeds, methods for...Read more
Regional focus: 
United StatesNorth America

Progress Report on Fisheries Development in Northeastern Brazil. I: Aquaculture

Published: 
August 1, 1972
U.S. Agency for International Development
The United States Agency for International Development has been providing assistance to the Government of Brazil in freshwater fisheries since 1966. The project goal established for this assistance to create a freshwater fisheries group capable of planning and conducting practical research programs...Read more
Regional focus: 
BrazilLatin America and the Caribbean

Irrigation Analysis for Selected Crops, Santa Cruz, Bolivia

Published: 
July 1, 1972
U.S. Agency for International Development
The principal area covered by this study consists of the plains between the Rio Grande and the Rio Piray north of latitude 18 15'S with some consideration in the north to the area between the Rio Piray and the Rio Yapacani. Within this study area agricultural development offers a large...Read more
Regional focus: 
BoliviaLatin America and the Caribbean

Lake Nicaragua Fisheries Survey

Published: 
June 15, 1972
U.S. Agency for International Development
In response to a request by the National Development Institute of Nicaragua (INFONAC), a fishery survey under the sponsorship of USAID/Nicaragua was conducted from February 28 to March 17, 1972, on Lake Nicaragua. The objectives of this survey were to assess the economic potential of the fishery...Read more
Regional focus: 
Latin America and the Caribbean

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