Infiltration of Unconsumed Irrigation Water in Utah
The ground-water hydrology of Panguitch Valley and adjacent areas, south-central Utah, was studied during 1988-90. One objective of the study was to measure ground-water recharge from...
Water and Salt Movement Under Trickle Irrigation
Experiments have been conducted to study the effect of the drip irrigation parameters on the movement of water and salt in the trickle wetted soil volume. The study indicated that for...
Herbicides in Streams: Midwestern United States
Results from a 2-year study of 149 streams geographically distributed across the corn-producing region of 10 midwestern States show that detectable concentrations of herbicides persist...
Farm Irrigation Rating Index (FIRI)?A Procedure to Evaluate Both Irrigation Systems and Management
The Soil Conservation Service USDA/SCS, concentrates it's technical assistance to cooperators on improvements of on-farm irrigation systems and improvements of water management...
Operation of Irrigation System and Water Management in Low Lying Paddy Area with Creek Network
Characteristics of the operation and management of irrigation systems were analyzed in the low lying paddy area with creek networks. The irrigation system in Kubota district was chosen...
Effect of Frequency on Center Pivot Irrigation
Processes that are affected by the irrigation frequency of center pivot irrigation systems are described. High frequency irrigation will increase evaporation from crop canopies and unshaded...
Multi-Purpose Subsurface Drainage System for the Town of Saguache
The town of Saguache, Colorado had a high water table during the irrigation season that caused numerous problems within the town and resulted in high infiltration rates to the sewer system...
Agricultural Drainage Reuse in Agroforestry Systems
On the westside of California's San Joaquin Valley, agroforestry systems are being evaluated as a solution to the agricultural drainage problem. Eucalyptus tree plantations...
Overall Resistance Parameter of Flow Arising in the Catchment-Area of a Reservoir in Steep Land
On a small reservoir catchment in mountains, the basin storage S(t) during a flood was expressed in terms of the basin discharge Q(t) and the time-varying storage parameters K(t) and P(t),...
Irrigation Scheduling for Groundwater Protection
Supplemental irrigation water is necessary for the production of high quality agricultural crops. Growers in Suffolk County, New York have traditionally irrigated according to weather...
Effects of Soil Layering on Infiltration
The effect of sloping soil layers on infiltration depends on the textural composition of both layers at the interface, as well as the slope of the interface. The contractions of flow caused...
Estimation of Loading via Fingered Flow
Results of experimental investigations of fingered preferential flow are combined into a concise, conservative engineering methodology for predicting pollutant transport through fingered...
Flexible Irrigation Supply Pilot Projects?Part I: Principles
The principles are described (Part I) and illustrated with developing countries case studies (Part II) to present the techniques that economically permit the use of farmer controlled variable...
Flexible Irrigation Supply Pilot Projects?Part II: Sri Lanka, Pakistan, India, Egypt
The Sri Lanka project covers about 150 one hectare farms on the lower half of a unit served by one distributary. The upper part, because of delays in construction, was left as an earth...
Design and Management of Drip Systems in Hawaii
In 1970, Hawaii's sugar industry began implementing drip irrigation to minimize labor requirements, improve water and nutrient application efficiencies, and maximize yields....
Determining Criteria for Operating Irrigation Systems
Operation variables involved in the management of given irrigation systems are the irrigation time and the inlet head, when sprinkling or drip methods are applied, or the time of cutoff...
Shallow Groundwater Collection for Reuse in Irrigation
A prototype system of subsurface drains for collection of shallow groundwater and reuse of drainage water for reuse in irrigation was examined. The system involved a field with subsurface...
Surface-Drained Level Basins for Rice Production
Surface-drained level-basin systems, consisting of a series of terraced level basins in which a portion of the applied water is drained from the inlet end of the basin, can be used to...
Research for New Water Table Management Systems
Water table management in the form of controlled-drainage and controlled-drainage/subirrigation is a feasible, yet under-utilized, practice in the Atlantic Coast flatwoods, the Ohio River...
Ground-Water Recharge from Streamflow Data, NW Florida
Annual base flows of streams draining Okaloosa County and adjacent areas in northwest Florida were determined through hydrograph separation and correlation techniques for purposes of evaluating...
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