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Use of Lysimeters to Measure Fog Interception in Tussock Grassland New Zealand
Previous studies of the water balance of single Tussock plants in small non-weighing lysimeters over a range of elevations in east-central Otago province suggest that tussock grassland...

Representativeness of Floating Evapotranspirometers
In the first part of the paper, the design, the working principle and the field installation of floating evapotranspirometer are described with the data logging system which delivers continuous...

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....

Relationship Between Lysimeter Area and Evapotranspiration (ET)
The lysimeter is an important instrument for measuring evapotranspiration (ET) of crops. It is widely used in the irrigation and drainage experimental stations in China. However, the areas...

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....

Prefabricated Weighing Lysimeter for Remote Research Stations
After designing and constructing several precision scale system weighing lysimeters in Southern Europe and the Middle East, the need arose for a prefabricated 'turn-key'...

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...

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...

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...

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...

 

 

 

 

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