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Sunday, May 10, 2020 | History

3 edition of Irrigation practices and return flow salinity in Grand Valley found in the catalog.

Irrigation practices and return flow salinity in Grand Valley

Gaylord V. Skogerboe

Irrigation practices and return flow salinity in Grand Valley

by Gaylord V. Skogerboe

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  • 22 Currently reading

Published by Environmental Protection Agency, Office of Research and Development, Robert S. Kerr Environmental Research Laboratory, for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Ada, Okla, Springfield, Va .
Written in English

    Subjects:
  • Irrigation,
  • Saline irrigation

  • Edition Notes

    Statementby Gaylord V. Skogerboe, David B. McWhorter, James E. Ayars
    SeriesEnvironmental protection technology series ; EPA-600/2-79-148
    ContributionsMcWhorter, David B., Ayars, James E., Robert S. Kerr Environmental Research Laboratory, Colorado State University. Dept. of Agricultural and Chemical Engineering
    The Physical Object
    Paginationxiv, 204 p. :
    Number of Pages204
    ID Numbers
    Open LibraryOL13603398M

    The return flow rate ranges from %–% for different SDCAs. These results demonstrate that the irrigation water is utilized effectively in the middle of HID having relatively lower surface return flow ratios. However, irrigation practices in Y1 need significant improvements to decrease the higher surface return flow : Yeqiang Wen, Songhao Shang, Khalil Ur Rahman, Yuhong Xia, Dongyang Ren. In surface irrigation system (flood, surge, sprinkler, bubbler) the maximum salinity is developed in deeper layers based on the wetting front and the lowest salinity is at the surface.

    This purpose of the project is to develop an analysis of the current irrigation practices of the strawberry growers on the Central Coast of California. The primary research evaluation will focus on the time period during the establishment of transplants, when sprinklers are used even though drip irrigation is available. The first report, "Irrigation Practices and Return Flow Salinity," focuses upon soil chemistry modeling and the prediction of irrigation subsurface return flow salinity. The second report, "Potential Effects of Irri- gation Practices on Crop Yields in Grand Valley" focuses upon the impact of various irrigation practices in determining crop yields, with particular emphasis on maize .

    Potential effects of irrigation practices on crop yields in Grand Valley. Ada, Okla.: Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type. U.S. Salinity Laboratory, Glenwood Drive, Riverside, CA (U.S.A.) (Accepted for publication 19 May ) ABSTRACT Suarez, D.L., Impact of agricultural practices on groundwater salinity. Agric. Ecosystems Environ., The impact of agricultural practices on water quality has been examined predominantly with an emphasis.


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Irrigation practices and return flow salinity in Grand Valley by Gaylord V. Skogerboe Download PDF EPUB FB2

Get this from a library. Irrigation practices and return flow salinity in Grand Valley. [Gaylord V Skogerboe; David B McWhorter; James E Ayars; Robert S. The performed sensitivity analysis shows that the key parameter for minimizing salt loading (at present one ha yields about 20 t of salt per year) in irrigation return flows is an increase in water application efficiency (WAE), which presently is only 48%.Cited by: Water entering the ground‐water supply from irrigation practices in the valley amounts to aboutacre‐feet/year and contributes abouttons/year to the salt load of the Colorado River.

Samples of base‐flow water from the weathered Mancos Shale aquifer in the valley vary in salinity from about 1, to about 9, mg/l with a Cited by: 5. The simulation results show that irrigation return flows, including tailwater and groundwater return flows, significantly increase river quantity, but that groundwater return flow is also a major component of river salinity.

There is significant seasonal fluctuation in river salinity and soil water salinity. The increase of soil water salinity from the soil surface to. The effect of varying irrigation return flow volumes as a possible explanation for the fluctuations in the mean monthly baseflow TDS content of a tributary in the Breë River Valley (South-Western Cape Province, Rep.

of South Africa) has been by: 9. Feasibility of the irrigation method of salinity reduction - 54 that receive irrigation return flow as ground-water discharges to the drains. (, p. 3), under present irrigation practices the excess salt in the soil and aquifer is expected to continue to be flushed in gradually declining amounts until completely removed.

This Author: Anthony Buono. In the modeled category of the cessation of all irrigation, average monthly ground water salinity decreased by 25%; average monthly river salinity decreased by %; and ground water return flows to the river decreased by an average of 64%.

Within the last twenty years, improvements in on farm irrigation management practices and lining of canals and lateral systems in Grand Valley Colorado are estimated to have resulted in substantial reductions in salt loading in return flows to the Colorado River.

The ground‐water system in many of the irrigated areas of the Colorado River Basin is derived almost entirely from deep percolation of irrigation water and seepage from irrigation Cited by: 5.

Examples. Irrigation Practices and Salinity on Strawberries multi-year projected developed an analysis of the current irrigation practices of the strawberry growers on the Central Coast of California, particularly targeting the impacts of salinity.

Thus, the salt loading due to irrigation return flow can be calculated from a know- ledge of water balance for the Grand Valley. The reductions in salt loading which reach the Colorado River will be directly proportional to reductions in subsurface irrigation return flows (seepage and deep percolation losses).

MODELING PROCESS FOR ASSESSING WATER QUALITY PROBLEMS AND DEVELOPING APPROPRIATE SOLUTIONS IN IRRIGATED AGRICULTURE Monitoring, Washington, D.C. November. Skogerboe, G.V., D.B. McWhorter and J.E. Ayars. Irrigation Practices and Return Flow Salinity in Grand Valley. Report in Press.

Irrigation Practices and Return Flow Salinity Author: Gaylord V. Skogerboe, Wynn R. Walker, Robert G. Evans. The first report, "Irrigation Practices and Return Flow Salinity," focuses upon the prediction of subsurface irrigation return flow salinity.

The second report, "Potential Effects of Irrigation Practices on Crop Yields in Grand Valley" focuses upon the impact of various irrigation practices in determining crop yields, with particular emphasis on maize (Zea Mays L.) and. Best Management Practices (BMP) for Irrigation BMPs have historically been focused on nutrient manage-ment and fertilizer rates.

However, as rainfall or irrigation water is the vector of off-site nutrient movement of nitrate in solution and phosphate in sediments as well as other soluble chemicals, proper irrigation management directlyFile Size: KB.

Return flow from agricultural lands in rice-based irrigation scheme is widely assumed to consist of so-called seepage and percolation fluxes (Causape et al., ; Kim et al., ) while others.

Since irrigation return flow is an integral part of the hydrologic system, control measures for managing the return flow from an irrigated area must be compatible with the objectives for water resource management and development in the total system (Skogerboe and Law, ).

Plants vary in their ability to resist this adverse effect, but once a particular threshold level is reached for each plant, yields gradually decrease with increased salinity.

Since irrigation return flow always contains more salts than the original supply, it tends to degrade the EFFECTS OF IRRIGATION ON WATER QUALITY quality of the stream Cited by: 6.

Irrigation and Salinity: a Perspective Review of the Salinity Hazards of Irrigation Development in the Arid Zone Article in Irrigation and Drainage Systems 16(2). Regional Assessment of Soil Water Salinity across an Intensively Irrigated River Valley Irrigation and Nitrogen Best Management Practices under Drip Irrigated Vegetable Production.

Assessing the Impact of Irrigation Return Flow on River Salinity for Colorado’s Arkansas River Valley. Chapter 4F: Irrigation Water Management Soil-Water-Plant Relationships Effective and efficient irrigation begins with a basic understanding of the relation-ships among soil, water, and plants.

Figure 4f-2 illustrates the on-farm hydrologic cycle for irrigated lands, and Table 4f-1 provides definitions of several terms associated with irrigation. irrigation canals and laterals, irrigated fields, and irrigation return flows pass through highly saline underlying Mancos Shale Formation in the Grand Valley.

By reducing the amount of groundwater percolating through these saline soils, salt loading to the Colorado River is.Irrigation return flows in the Grand Valley of Western Colorado contribute to the serious salinity problems in the Colorado River Basin by carrying large salt loads resulting from contact with.The first report, "Irrigation Practices and Return Flow Salinity in Grand Valley" focuses upon the prediction of subsurface irrigation return flow salinity.

These reports have been used as input to another research project conducted in Grand Valley and largely funded by the U.S. Environ- mental Protection Agency under Grant No. S, "Implementa- tion of Agricultural Salinity .