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

Nitrogen Input, Primary Productivity and Fish Yield in Fertilized Freshwater Ponds in Indonesia

Published: 
July 1, 1990
U.S. Agency for International Development
Twelve 0.2 ha ponds in West Java were fertilized weekly with four levels of chicken manure during a 149 day grow out experiment for Nile tilapia production. Laboratory leaching experiments for measuring dissolved inorganic nitrogen (DIN) release from chicken manure showed that nitrogen was released...Read more
Regional focus: 
IndonesiaEast Asia and Pacific

Irrigation Systems Management-II Project: Plan of Work

Published: 
July 1, 1990
U.S. Agency for International Development
The Irrigation Systems Management (ISM) project is the first major instance of foreign donors directly supporting the activities of the Provincial Irrigation Departments (PIDs) in the construction, operation and maintenance of irrigation and drainage systems. Each department has extensive field...Read more
Regional focus: 
PakistanSouth East Asia

Importance of Mangroves in Sustaining Fisheries and Controlling Water Quality in Coastal Ecosystems: Progress and Data Report

Published: 
January 1, 1990
U.S. Agency for International Development
Mangroves are forested wetlands that inhabit the intertidalzone of tropical and subtropical estuaries. It has beensuggested that these wetlands provide both food and habitat for a diverse fishery, and that the yields of some commerciallyimportant species are dependent on the area of this vegetation...Read more

Water Production Functions as Related to Time and Amount of Irrigation and Rain

Published: 
May 29, 1990
U.S. Agency for International DevelopmentWinrock International
The workshop had the following objectives: 1. Consider the basic processes that determine crop water use and soil water balance characteristics. 2. Discuss the theoretical and experimental methods for evaluation of evapotranspiration (soil evaporation and transpiration). 3. Consider the effect...Read more
Regional focus: 
IndiaSouth East Asia

Pond Dynamics/Aquaculture Collaborative Research Data Reports -- Volume Six, Number One, Honduras Project: Cycle I of the CRSP Global Experiment

Published: 
April 27, 1990
U.S. Agency for International Development
The objective of this research was to quantify the physical, chemical, and biological characteristics of experimental ponds, stocked with Oreochromis niloticus and fertilized only with phosphorus, during the dry and rainy seasons (CRSP First Work Plan, undated). Fish yields after 150 days were...Read more
Regional focus: 
HondurasLatin America and the Caribbean

Pond Dynamics/Aquaculture Collaborative Research Data Reports -- Volume Seven, Number Two, Gualaca, Panama: Cycle III of the CRSP Global Experiment

Published: 
April 20, 1990
U.S. Agency for International Development
During Cycle Ill, the effects of increased nutrient inputs on the chemical, physical and biological variables that had been studied during Cycle were recorded. The objectives of Cycle III were to establish the optimum application rates of chicken litter for tilapia production in Panama, to measure...Read more
Regional focus: 
PanamaLatin America and the Caribbean

Aquaculture Research and Development in Rural Africa

Published: 
April 1, 1990
U.S. Agency for International Development
Aquaculture development in Africa has lagged far behind that in other developing regions while human needs for additional protein are just as urgent. This volume reports results from an international conference convened in Zomba, Malawi, that reviewed the progress of the first three years of ICLARM...Read more
Regional focus: 
Sub-Saharan Africa

Start - Up Workshop for the Irrigation Systems Management II Project, Quetta, Pakistan, March 12-15, 1990

Published: 
March 1, 1990
U.S. Agency for International Development
The workshop group came to major agreements about how the technical assistance team provincial advisors were to coordinate and collaborate with the Pakistani provincial coordinators in the Provincial Irrigation Departments. Specific responsibilities were defined, based on the needs of the provinces...Read more
Regional focus: 
PakistanSouth East Asia

Determinants of Success of Irrigated Perimeters in The Bakel Delegation -- Part I: Water and Crops

Published: 
March 1, 1990
U.S. Agency for International Development
The early part of the report reviews the layout of the model andhow the various modules comprising it are interrelated. Changes are discussed that have been made in the model since it was originally introduced and described in an earlier report.Read more
Regional focus: 
SenegalSub-Saharan Africa

Feasibility of Freshwater Prawn Production in Belize

Published: 
January 1, 1990
U.S. Agency for International Development
This study conducted by RDA International, Inc., for the Government of Belize under USAID contract, examines the feasibility of commercial export-oriented production and marketing of the freshwater prawn Macrobrachium rosenbergii in Belize, reviews physical requirements including Boils types and...Read more
Regional focus: 
BelizeLatin America and the Caribbean

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