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
Water Constraints to Corn Production in Central Brazil
Published:
January 1, 1975U.S. Agency for International Development
The area around Brasilia, Brazil is representative of millions of hectares in the tropics with very acid soils of extremely low fertility. The unfavorable water supplying properties of these soils together with the occurrence of wet season dry periods and limitations to root growth due to aluminum...Read more
Regional focus:
Brazil, Latin America and the CaribbeanWater Availability and Soil Suitability for Irrigation Water Impoundments in the Federal DistrICT of Brazil
Published:
January 1, 1975U.S. Agency for International Development
Agriculture on the Central Plateau of Brazil is poorly developed. The main reasons are the poor soil fertility and the high aluminum toxicity of the soils, restricting the rooting depth of many crops. Shallow rooting is responsible for the occurrence of serious soil-water stress conditions, even in...Read more
Regional focus:
Brazil, Latin America and the CaribbeanCalibration and Application of the Jensen - Haise Evapotranspiration Equation
Published:
January 1, 1975U.S. Agency for International Development, Colorado State University
TO ESTIMATE THE CONSUMPTION USE OF VARIOUS CROPS USING CLIMATIC DATA, A SUMMARY OF THE PROCEDURE FOR DETERMINING EVAPOTRANSPIRATION AFTER CALIBRATING THE JENSEN-HAISE EQUATION IS AS FOLLOWS: 1) DETERMINE MEAN DAILY TEMPERATURE (T) FROM DAILY MAXIMUM AND MINIMUM TEMPERATURES FOR THE SEASON AND...Read more
Regional focus:
United States, North AmericaOptimum Utilization of Water for Agriculture, With Emphasis on On-Farm Water Management; Annual Technical Report, 1974/1975
Published:
January 1, 1975U.S. Agency for International Development
The report details findings on optimum utilization of water for agriculture, finding evidence that in developing countries there is an urgent need for more food and better nutrition. Food production is closely linked to the water available for transpiration by the growing crop and the water...Read more
Regional focus:
United States, North AmericaEnergy Inputs to Irrigation
Published:
December 1, 1974U.S. Agency for International Development
Energy inputs to irrigation are dramatically increasing as irrigated agriculture expands to meet world food demands and more sophisticated technologies are developed to increase water use efficiency. In this study nine irrigation systems, designed for a specific land area, are analyzed and the...Read more
Regional focus:
United States, North AmericaWater Runs Down Hill and Evaporates: Human Organization and the Management of Water Environments
Published:
July 31, 1974U.S. Agency for International Development
This paper is concerned with such an approach to the institutional and organizational requirements of irrigated agriculture. To deal with this concern, several related topics will be discussed. First, a brief look at some historical attempts at irrigation development are presented. Next, a more...Read more
Regional focus:
South East AsiaMoisture Availability and Crop Production
Published:
June 26, 1974U.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 CaribbeanEvaluation Study of the Nam Tan Irrigation Project, Sayaboury Province, Laos
Published:
May 1, 1974U.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:
Laos, East Asia and PacificOn - Farm Water Management Research in Chile: Efficient Use of Soil Moisture and Nitrogen for Increased Crop Production
Published:
March 1, 1974U.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:
Chile, Latin America and the CaribbeanResearch Needs for on - Farm Water Management: Proceedings of an International Symposium, Park City, Utah
Published:
March 1, 1974U.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
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