Results 171 to 180 of about 2,316 (222)

The unsteady groundwater mound below an irrigation ditch or leaky canal

Journal of Hydrology, 1977
Abstract The groundwater mound which develops below an irrigation ditch or leaky canal was investigated experimentally using a hydraulic sand-tank model and a Hele-Shaw analogue. The results showed that the mound built up in height at a rate proportional to the cuberoot of time and moved laterally at a rate proportional to the cube root of the time ...
E G Youngs
exaly   +2 more sources

Modeling an irrigation ditch opens up the world. Hydrology and hydraulics of an ancient irrigation system in Peru

Physics and Chemistry of the Earth, 2009
Abstract Ancient Peruvian irrigation systems have been studied extensively, but much remains unknown about technical and hydrological aspects of these irrigation systems. The Pampa de Chaparri irrigation system in Peru is used as an example to show how modeling approaches for hydrological and hydraulic features of irrigation can yield results to ...
Maurits W Ertsen
exaly   +2 more sources

Ditch and Furrow Irrigation

2023
Abebech A. Beyene, Saeid Eslamian
exaly   +2 more sources

irrigation ditch

2014
exaly   +2 more sources

Muddy irrigation ditch understanding for agriculture environmental monitoring

Sustainable Computing: Informatics and Systems
Luping Wang, Hui Wei
exaly   +2 more sources

Border Ditch Irrigation in Colorado

Transactions of the ASAE, 1982
ABSTRACT THE border ditch method is a labor intensive form of surface irrigation that is most appropriate for crops with deep root zones and large water requirements. Ir-rigating a field using the method requires irrigator ex-perience gained from trial and error experimentation on that particular field.
null F. T. Izuno, null W. Clyma, null T. H. Podmore   +2 more
openaire   +1 more source

Vegetated ditches as a management practice in irrigated alfalfa

Environmental Monitoring and Assessment, 2007
The organophosphate (OP) insecticides diazinon and chlorpyrifos have been frequently detected in the San Joaquin River, California, USA. Irrigation tail waters are a significant source of OP pesticides in the watershed. This study tested several management practices for reducing offsite movement of chlorpyrifos to surface water from flood irrigated ...
Sheryl L, Gill, Frank C, Spurlock, Kean S, Goh, Carissa, Ganapathy   +3 more
openaire   +2 more sources

An Asphalt Incorporator and Packer for Lining Irrigation Ditches

Transactions of the ASAE, 1976
ABSTRACT IN laboratory experiments, an asphalt emulsion mixed with soil has shown promise of being a suitable lining material for irrigation ditches. This paper describes prototype machinery developed for lining a field lateral with the mixture in order that it may be evaluated under field conditions.
null N. B. McLaughlin, null F. B. Dyck, null T. G. Sommerfeldt   +2 more
openaire   +1 more source

Lining Irrigation Laterals and Farm Ditches

1961
Excerpts from the report: Water is becoming one of the Nation's most limiting resources. In irrigation for agriculture, conveyance losses and low application efficiencies of water represent the principal source of waste. About one-third of all water diverted for irrigation is lost from point of diversion to the farm.
Lauritzen, C. W., Lauritzen, C. W.
openaire   +1 more source