Simulation of Post-irrigation Moisture Changes for Surface Irrigation of Corn
An attempt has been made to refine prediction of irrigation efficiency obtained at the end of an irrigation by accounting for the losses that occur during redistribution. The water budget...
Irrigation Intervention Analysis of Drainage SAR
G.E.P. Box-G.M. Jenkins time series analysis, with irrigation applications as an intervention function, was used to study temporal and spatial variabilities of sodium adsorption ratios...
Sprinkler and Subirrigation Research Park for Multiple Cropping Research
A research park has been developed to enable scientists to evaluate sprinkler and subsurface irrigation management strategies for multiple cropping rotations. Various sprinkler irrigation...
Developing a Training Program for Inspectors
The reasons for failure of engineering works are many and varied. An inexperienced or poorly trained construction inspector can be a contributing element in cases of failure. The Bureau...
A Comprehensive Tool for Tile Drainage Planning
The objective of the project is to design and develop a set of software tools, building on existing models and computer-assisted procedures, known as an Advanced Decision Support System...
AgriMet?ET Phones Home?(Adaptation of Satellite Telemetry for Crop Water Use Modeling in the Pacific Northwest)
The development of a regional automatic agricultural weather station network in the Pacific Northwest (AgriMet) is enabling the site-specific calculation of evapotranspiration (ET) through...
Methods in Determining Crop Water Usage
A study was conducted to evaluate different methods of measuring soil moisture and crop water usage in Southwest Kansas. Soil moisture readings taken by the neutron gauge were verified...
Use of the Penman Equation in Inter-Mountain Valleys
H.L. Penman equation as well as the J.L. Monteith version of this equation were compared under the advective conditions of the Grand Valley of Colorado. The wind function in the general...
Water Requirements for Vegetable Production in Puerto Rico
Total water requirements of green beans, cabbage, carrots, cucumber, eggplant, lettuce, melons, okra, onion, potatoes, pumpkin, sweet peppers, sweet potato and tomatoes were estimated...
Proposed Improvements in Lateral Canal Operations
Uniform and flexible supplies of irrigation water are required for farmers to make the best use of their on-farm application systems. Results of a study of deliveries at the lateral canal...
Control of Surge Pressures in Irrigation Systems
Excessively high or low pressure within an irrigation system can result in damage to pipelines, pumps, valves, and on-farm facilities. Frequently, these pressure variations are caused...
Random Characteristics of Sediment-Laden Flows and the Techniques of Effective Sediment Exclusion on Dujiangyan Irrigation Project in China
The irrigation system is over 2,200 years old and discharges water at a rate of 340-740 m3/s from the Minjiang River. The average slope of the river...
Dam Seepage Analysis Using Artificial Intelligence
The paper discusses an interactive advanced decision support system (ADSS) which is being applied to analyzing seepage from embankment dams. The development of a prototype knowledge base,...
Investigation of Runoff from a Subsurface Drained Field
This paper examines the relationship among rainfall, water table level and runoff hydrographs for subsurface-drained farmlands. It was found that peak flows were greatly influenced by...
Verification of an Agricultural Land Drainage Model
An agricultural land drainage simulation model was tested under field conditions. The model was found to have several errors. Some of these errors were corrected and the model was tested...
Drainage Through Segara Anakan
The Lower Citanduy Irrigation Project in Central Java, Indonesia, drains through the estuary called Segara Anakan. Due to sediment accretion, the lagoon is filling. With erosion problems,...
Drainage Laws and Organizations
The legal issues associated with drainage relate to repelling diffused surface water at the boundaries of one's land as well as with disposing of excess water once it has...
Leaching of Nitrate from Freely Drained?Irrigated Fields Treated with Municipal Sludges
A municipal sludge land application experiment was initiated in 1975 near Riverside, California. From 1975 to 1983 sludges from the Los Angeles Metropolitan Area were applied on experimental...
Irrigation and Nitrogen Management Impacts on Ground-Water Quality
The effect of irrigation management and nitrogen management on ground-water quality has been evaluated for four years on a sandy loam Coastal Plain soil. Nitrogen sidedressing and fertigation...
Modeling Irrigation and Nitrogen Management
Irrigation increases the potential for nitrate accumulation in the groundwater in two ways. It increases the water content in the root zone creating a greater potential for leaching. Two...
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