Agriculture

Globally, the agricultural sector consumes about 70% of the planet’s accessible freshwater. Because water is vital for the success of agriculture, proper water management techniques are necessary to meet food and fiber material demands around the world. Resources available here pay special attention to efficient irrigation and sustainable agriculture techniques.

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Agriculture Resources

Moisture Availability and Crop Production

Published: 
June 26, 1974
U.S. Agency for International Development
Within rapidly developing economies there is increasing demand for better planning for the use of resources for agricultural production. Planned agricultural development depends upon a variety of resources and conditions including soils, climate, land use history, management and cultural practices...Read more
Regional focus: 
Latin America and the Caribbean

Evaluation Study of the Nam Tan Irrigation Project, Sayaboury Province, Laos

Published: 
May 1, 1974
U.S. Agency for International Development
The purpose of this report is to provide an evaluation study of the irrigation development of 2,200 hectares of irrigable land and make recommendations for the best development possibility of the project.Read more
Regional focus: 
LaosEast Asia and Pacific

On - Farm Water Management Research in Chile: Efficient Use of Soil Moisture and Nitrogen for Increased Crop Production

Published: 
March 1, 1974
U.S. Agency for International Development
A project involving research and demonstration on modern concepts of irrigation management was conducted in the Aconcagua Province of Chile during three growing seasons, 1969 to 1972. The test crop was corn. Variables were soil moisture, nitrogen fertilizer, hybrid variety, and plant density. One...Read more
Regional focus: 
ChileLatin America and the Caribbean

Research Needs for on - Farm Water Management: Proceedings of an International Symposium, Park City, Utah

Published: 
March 1, 1974
U.S. Agency for International Development
The following areas of knowledge deficiency in the field of on-farm water management were identified by the Symposium: (1) Physiological responses of crops to environmental stresses, (2) optimal crop productivity relationships of water and other inputs; (3) methods for systematically transferring...Read more

Design of Irrigation Drop Structures

Published: 
March 1, 1974
U.S. Agency for International Development
The object of the study described herein was to examine the performance of various drop structures and to attempt formulating a generalized design procedure. The approach channel and flow characteristics throughout the length of the drop structures were reviewed on the basis of open channel...Read more
Regional focus: 
South East Asia

Forecasting Water Use in U.S. Irrigated Agriculture With Different Alternative Futures

Published: 
February 1, 1974
U.S. Agency for International Development
The results of the forecasting effort of the National Water Commission show both how (a) the economic demands for water in irrigated agriculture can be estimated and (b) how water use will be affected by policy decisions and the life styles of U.S. citizens. The importance of varying certain...Read more
Regional focus: 
United StatesNorth America

Moslem Water Law and Its Influence on Spanish Water Law and the Irrigation System of Valencia

Published: 
January 19, 1974
U.S. Agency for International Development
The influence of Moslem Water Law and the improved irrigation practices and techniques that accompanied the spread of Islam have had a remarkable and important impact on the Iberian peninsula, and in particular upon the irrigation system of Valencia. The system of water users association that...Read more
Regional focus: 
Europe and Central Asia

Economic Analysis of Alternate Irrigation Methods in El Salvador

Published: 
January 1, 1974
U.S. Agency for International Development
Irrigation is a relatively new factor in agriculture in El Salvador. In the past, the crops have been mainly produced during the rainy season (May-October). Because of the ideal climate, with irrigation, crops can be produced year round, and with this intent, the Ministry of Agriculture, (...Read more
Regional focus: 
El SalvadorLatin America and the Caribbean

Trickle Irrigation Design Parameters

Published: 
January 1, 1974
U.S. Agency for International Development
Trickle irrigation is a system for supplying filtered water and fertilizer directly on or into the soil. Spraying is eliminated and water is allowed to dissipate under low pressure in an exact predetermined pattern. The outlet device which emits the water into the soil is known as an "emitter...Read more
Regional focus: 
United StatesNorth America

Trends in Irrigation and Drainage Research

Published: 
January 1, 1974
U.S. Agency for International Development
If 18% of the crop land in Class 1 to 5 farms in the United States is irrigated and produces 25% of the total value of agricultural production it would seem that increased production can easily come from increased area irrigated. However, water supplies are limited. A more extensive use of...Read more
Regional focus: 
Latin America and the Caribbean

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