Lysimeter Studies in Irrigated Soils of South Eastern Australia
The Riverine Plain of south eastern Australia is an extensive, predominantly clay soil area with large surface irrigation schemes. Early lysimeter installations were used to estimate evaporative...
Lysimeter-based Water Balance Study in Japan
Research on the water balance of agricultural land has been conducted using lysimeters for various objectives in Japan since the 1950s. In this paper, research for two major objectives...
Water Table Lysimeter Data Interpretation
Lysimeters were used to estimate seasonal water use of wet meadows and phreatophytes in northern Utah, southeast Idaho and southwest Wyoming (1983-1990). Twelve water table lysimeters...
Percolation Lysimeters for Water Quality Sampling
A field method to measure, year-around, the quantity and quality of leachate under irrigated crops has been developed. A specific objective was to evaluate percolation lysimeters as tools...
High Saline Water-Table Effect on Wheat Irrigation
Hydraulic, weighing lysimeters were used for five years to measure the effect of high, saline water tables on irrigation requirement of wheat. Each year the wheat was grown with no water...
Temporal Ion Balance Variation of an Irrigated Soil
The research was carried out in Southern Italy, from 1983 to 1988, using two gravity lysimeters irrigated with non saline water. The objective of this study was to test wether long-term...
Installation and Operation of Large Drainage Lysimeters on Grapes
Six large (3.05 m ? 3.66 m ? 1.83 m) drainage lysimeters were installed in 1984 in the middle of a 1.2 ha trickle irrigated experimental vineyard. Each was planted to two V. vinifera grapevines....
Use of Lysimetric Measurements for Designing Major Irrigation Systems in the USSR
The bioclimatic method for calculation of crop water requirements has been widely used in the USSR in recent years. The author has analyzed the results of its application for designing...
Lysimetric Monitoring for Operation of Irrigation Systems in the USSR
The author suggests a new method for operational control of irrigation regimes which is based on monitoring of a number of critical parameters related to the yield potentials of crops....
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...
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...
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...
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....
Adopted Drip Irrigation Technology for Developing Countries
Two low cost drip irrigation systems are presented. Even though the uniformity of these systems is not as high as the conventional drip systems, the initial and operating costs of the...
Return to search