Digital Library
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Now showing items 21-40 of 753
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Rapid Response Tensiometer for Evaluating Preplant Irrigation Efficiency
(Texas Water Resources Institute, 1979-04)A study of the potential of using rapid response tensiometers to evaluate preplant irrigation was conducted at the Texas Agricultural Experiment Station, Lubbock and Halfway, Texas. Sites used for the study were an Olton ... -
An Economic Analysis of Agricultural Soil Loss in Crosby County, Texas
(Texas Water Resources Institute, 1979-05)The Federal Water Pollution Control Act Amendments of 1972, Public Law 92-500, established a national goal of eliminating the discharge of pollutants into the nation's waterways by 1985. As a step toward that goal an interim ... -
New Irrigation System Design for Maximizing Irrigation Efficiency and Increasing Rainfall Utilization
(Texas Water Resources Institute, 1980-05)A new concept in irrigation system design, which has the potential of significant savings in both water and energy requirements, has been developed and is under evaluation. The system is characterized by and has been labeled ... -
Impact of Alternative Energy Prices, Tenure Arrangements and Irrigation Technologies on a Typical Texas High Plains Farm
(Texas Water Resources Institute, 1980-05)Irrigation is a major contributing factor in crop production on the Texas High Plains. It is responsible for greatly increasing crop production and farm income for the region. Two factors, a declining groundwater supply ... -
Evaluation of the Impact of Texas Lignite Development on Texas Water Resources
(Texas Water Resources Institute, 1980-07)Fuel shortages and resultant rising fuel costs as well as federal policies prompting energy independence have served to encourage power companies to exploit available lignite deposits of the western states as a viable fuel ... -
Automation of Pivot Sprinkler Irrigation Systems to More Efficiently Utilize Rainfall and Irrigation Water
(Texas Water Resources Institute, 1980-08)A study was conducted to develop automated pivot sprinkler irrigation systems and determine if such systems use less water and energy than manually operated systems. The study was conducted near Earth, Texas, using irrigation ... -
Heat Transport in Groundwater Systems--Finite Element Model
(Texas Water Resources Institute, 1980-08)Solar energy is a promising alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by injecting hot water heated using solar ... -
Optimal Use of Groundwater and Surface Water to Reduce Land Subsidence
(Texas Water Resources Institute, 1980-08) -
Heat Transport in Groundwater Systems--Laboratory Model
(Texas Water Resources Institute, 1980-08)Solar energy is a possible alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by heating water using solar collectors ... -
Economically Optimum Agricultural Utilization of a Reclaimed Water Resource in the Texas Rolling Plains
(Texas Water Resources Institute, 1980-09)The U.S. Army Corps of Engineers (COE) has proposed a project that would reduce the flow from saline springs and seeps within the groundwater alluvium of the Red River Basin. While the amount of salts moving through the ... -
Response of Peanuts to Irrigation Management at Different Crop Growth Stages
(Texas Water Resources Institute, 1980-12)Past irrigation research on peanuts has shown that when the plant is exposed to soil moisture stress at different crop growth stages, different responses seem to exist between the Spanish and the Florunner peanut varieties. ... -
Determining the Transpiration Rate of Peach Trees Under Two Trickle Irrigation Regimes
(Texas Water Resources Institute, 1980-12)The scientific design and management of a modern irrigation system requires that the designer or manager have knowledge of site and plant criteria such as infiltration, drainage, soil fertility, plant water needs, and plant ... -
The Agricultural Benefits of Salinity Control on the Red River of Texas and Oklahoma
(Texas Water Resources Institute, 1980-12)Salinity of the waters from the Red River and its major tributaries has virtually eliminated its use for irrigation of agricultural crops in Texas and Oklahoma. A chloride control project has been proposed whereby the ... -
Comparison of Methods for Determining Soil Hydraulic Characteristics
(Texas Water Resources Institute, 1980-12)An adequate description of soil moisture movement is necessary for solution of agriculturally oriented problems such as irrigation, drainage and runoff control. Three approaches for determining the hydraulic properties of ... -
Break-Even Investment in a Wind Energy Conversion System for an Irrigated Farm on the Texas High Plains
(Texas Water Resources Institute, 1981)The purpose of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be ... -
Survey and Control of Synthetic Organics in Texas Water Supplies
(Texas Water Resources Institute, 1981-01)Four Texas water supplies (Lake Somerville, Lake Livingston, Neches River, and Sabine River) were surveyed to determine their tendency to form trihalomethanes when chlorinated. The ability of conventional and innovative ... -
Improved Water and Nutrient Management Through HighFrequency Irrigation
(Texas Water Resources Institute, 1981-03)High frequency irrigation implies the uniform, frequent application of water to crops. The fequency may range from several irrigations per week to daily irrigation to even several irrigations per day in greenhouse and ... -
Contaminant Transport in Hydrogeologic Systems
(Texas Water Resources Institute, 1981-03)Contaminant transport in hydrogeologic systems requires knowledge of transmissivity, storage coefficient, and dispersivity. Techniques for evaluating transmissivity and storage coefficient under field conditions are well ... -
Feasibility Study of the Effects of Water Quality on Soil Properties in the Red River Valley
(Texas Water Resources Institute, 1981-08)The suitability of water for irrigation depends upon many factors, of primary concern is the quantity and quality of salts present in the water Ayers and Wescot1. If total dissolved solids in the irrigation water are too ... -
Economic Implications of Farmer Storage of Surface Irrigation Water in Federal Projects: El Paso County, Texas
(Texas Water Resources Institute, 1981-12)The Bureau of Reclamation has approved a program for farmer storage of surface irrigation water in Elephant Butte Reservoir, New Mexico. This program would allow individual farmers to store part of their annual surface ...