Results 131 to 140 of about 1,099 (177)

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

Substantiation of the parameters of temporary irrigation ditch leveler tools

Russian Agricultural Sciences, 2014
It is established that the process of moving and placing dry upper soil layers and wet layers from the base of a bank in the channel of a temporary irrigation ditch is affected by the shape of the leveler mold-boards, clearance between them, and moldboard height and angle. The parameters of the leveler tool are calculated.
N. T. Manabaev, U. A. Usipbaev, Z. A. Balabekov, A. A. Meirbekov, T. K. Samataev   +4 more
openaire   +1 more source

optimizing Temporal Water Allocation by Irrigation Ditch Companies

Transactions of the ASAE, 1987
ABSTRACT Adynamic programming (DP) algorithm is presented for allocation of irrigation water over time by ditch companies. The algorithm optimizes weekly deliveries of water to farmers and uses a single state variable, total storage in reservoirs at the beginning of each week.
null Jim C. Loftis, null Robert J. Houghtalen   +1 more
openaire   +1 more source

An Open Ditch Surge Flow Furrow Irrigation System

Applied Engineering in Agriculture, 1986
AN automated rotating gate enabled an existing open channel furrow irrigation system to be adapted to surge flow. Equipment performance was quite reliable. System hydraulics were analyzed with respect to unequal outlet elevations, spatially varied flow within an irrigation bay, and unsteady flow due to the opening or closing of the automated gate ...
null Roberto Testezlaf, null James E. Garton, null Anthony J. Cudrak, null Ronald L. Elliott   +3 more
openaire   +1 more source

Mitigation Assessment of Vegetated Drainage Ditches for Collecting Irrigation Runoff in California

Journal of Environmental Quality, 2008
AbstractWidespread contamination of California water bodies by the organophosphate insecticides diazinon and chlorpyrifos is well documented. While their usage has decreased over the last few years, a concomitant increase in pyrethroid usage (e.g., permethrin) (replacement insecticides) has occurred.
M T, Moore, D L, Denton, C M, Cooper, J, Wrysinski, J L, Miller, K, Reece, D, Crane, P, Robins   +7 more
openaire   +2 more sources

Plant diversity in a water-meadow landscape: the role of irrigation ditches

Plant Ecology, 2017
Species-rich, extensively managed grasslands are among the most threatened ecosystems in Europe. The traditional technique of meadow irrigation, formerly practised in large parts of Europe, may be a viable management option that meets both ecological and economical objectives.
Melanie Meier, Rebekka Gerlach, Jens Schirmel, Constanze Buhk   +3 more
openaire   +1 more source