2 edition of Irrigation management affecting quality and quantity of return flow found in the catalog.
Irrigation management affecting quality and quantity of return flow
Lyman S Willardson
by Environmental Protection Agency, Office of Research and Development, Robert S. Kerr Enivironmental Research Laboratory in Ada, Okla, Springfield, Va. : for sale by the National Technical Information Service
Written in English
|Statement||by Lyman S. Willardson and R. John Hanks|
|Series||Environmental protection technology series ; EPA-600/2-76-226|
|Contributions||Hanks, R. J. 1927-, joint author, Utah. States University of Agriculture and Applied Science, Logan, Dept.of Soil Science and Biometeorology, Utah State University. Agricultural and Irrigation Engineering|
|The Physical Object|
|Pagination||xvi, 191 p. :|
|Number of Pages||191|
irrigation management and irrigation/drainage system. Any number of these land use mixes can be represented by a functional unit. Each of these mixes is represented by an independent water balance. These multiple water balances are then accumulated to provide an overall irrigation water demand and drainage return flow from the irrigated region.  As we assume a single water source, and water quantity declines due to transpiration and surface evaporation losses, we can stipulate that and, such that q declines and s increases from upstream to downstream. Water is used for irrigation and we assume that all users (farms/regions) have to deal with equal ambient conditions (climate, soil type, crop in production, etc.) except for water Cited by: 5.
Irrigation return flow coefficients, i.e. the ratio between the quantity of water returned from the cultivated area to the groundwater system and the amount of abstraction, vary by more than 50% for rice cultivation using standing water irrigation to 0% in the case of drip irrigation technique. Water quantity is a more important issue for this nursery, but poor water quality has had some negative economic effects. Irrigation return water is filtered and sanitized with chlorine gas before being applied to plants via overhead and micro-irrigation systems.
reducing the impacts of irrigation on water quality, and enhancing producer net returns. Water Conservation Water savings through improved management of irrigation supplies are considered essential to meeting future water needs for agriculture and other uses. Irrigation is the largest use of water, accounting for nearly 90 percent. and the anticipated irrigation application. If the return flow is used as an independent irrigation supply rather than as a supplement to the primary irrigation water supply, the rate and volume of flow must be adequate for the method(s) of water application employed. Additional Criteria Applicable To Improving Water Quality Storage Size: 24KB.
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At intermediate water applications (16 in) (40 cm), the more saline irrigation water resulted in more upward flow than the less saline irrigation water. For a given amount of water applied the higher the initial soil salinity the lower the amount of upward flow.
Get this from a library. Irrigation management affecting quality and quantity of return flow. [Lyman S Willardson; R John Hanks; Robert S.
Kerr Environmental Research Laboratory.]. ABSTRACT Field and laboratory research was conducted to determine the effects of irrigation management and fertilizer use upon the quality and quantity of irrigation return flow. The total seasonal discharge of salts from the tile drainage system was directly related to the quantity of water discharged, because the solute concentration of the ground water was essentially constant over time.
Sprinkler and Surface Irrigation Effects on Return Flow Water Quality and Quantity D.L. Bjorneberg 1, D.T. Westermann, N.O. Nelson2 1USDA ARS, Kimberly, ID 2Kansas State University, Manhattan, KS Abstract. A major conservation practice in the Upper Snake-Rock (USR) watershed is the conversion from furrow irrigation to sprinkler irrigation.
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. capacity and irrigation m ethod are major factors influencing the quantity of return flow in both WMUs.
Firstly, the difference in soil texture will affect the horizontal and vertical infiltration. irrigation results in lower TSS and P concentrations in irrigation return flow than does furrow irrigation. Additional data must be collected prior to thorough data analysis.
Keywords. irrigation systems, water management, water quality, conservation, CEAP, furrow irrigation, sprinkler irrigation. irrigation water is nothing new in Colorado, where irrigation uses about 80% of the trillion gallons of water diverted annually in the state.
Previously, these concerns centered only on water quantity; now, water quality is an important consideration in managing irrigation. To reduce nonpoint source pollution caused by leaching and runoff File Size: KB.
Field Preparation. Field preparation water is used to provide moisture to the field soil for tillage and bed formation. The water used for field preparation depends on specific field cultural practices, initial soil moisture conditions, the depth to the natural water table, and the type of irrigation Size: KB.
quality and environmental impacts, the design of environmental amenities, the management of waste disposal, the optimum operation of wastewater treatment plants and the remediation of contaminated sites. Important features covered in this book are.
Uncertainty Analysis of Water Quantity and Size: KB. In summary, simple alternatives in irrigation management achieved an increment of 26% in water use, decreasing by 20% and 24% the salt and nitrate masses exported, respectively, ameliorating the quality of the system receiving the irrigation return flows (Riguel River).Cited by: On the other hand, the amount of irrigation return flows is controlled by the lack or existence of irrigation, and the system and/or management of irrigation carried out.
4F: Irrigation Water Management Management Measure for Irrigation Water To reduce nonpoint source pollution of ground and surface waters caused by irrigation: (1) Operate the irrigation system so that the timing and amount of irrigation water applied match crop water needs.
Return flow to groundwater is the quantity of water applied at or near the land surface which infiltrates back (returns) to the groundwater system. Common uses that lead to return flow are irrigation of agricultural fields, golf courses or lawns, domestic wastewater disposal through septic systems, and artificial recharge.
Get this from a library. Management practices affecting quality and quantity of irrigation return flow. [Larry G King; R J Hanks; United States.
Environmental Protection Agency. Office of Research and Development.; National Environmental Research Center (Corvallis, Or.)]. ADVERTISEMENTS: After reading this article you will learn about the quality of irrigation water and factors affecting it.
Quality of Irrigation Water: Whatever may be the source of irrigation water viz. river, canal, tank, open well or tube- well, some soluble salts are always dissolved in it.
The main soluble constituent in water is Ca, [ ]. Good irrigation management, closely matching irrigation demands and supply, can reduce seepage and increase irrigation efficiency, thereby reducing the groundwater recharge. The provision of drainage will alleviate the problem locally but may create problems if the disposal water is of a poor quality.
An Irrigation System Assessment should be based on a good site plan showing the location of farm buildings, manure and chemical storages, field shapes, and irrigation system intake. This information is important for plan development in terms of managing water quality and quantity on the farm.
The Irrigation Water Management (IWM) Plan will contain, at a minimum: • An irrigation system layout map showing the main pipeline(s), irrigated area, soil moisture sensor locations and depths (if used), and soils.
• The methods used to measure or determine the flow rate or volume of the irrigation applications. Chapter 5. Water conservation i.e. the irrigation return flow (Solomon and Davidoff, ). However, in terms of water quality, there is a progressive degradation because irrigation return flows pick up impurities (Chapter 4).
Thus, it is necessary to be able to quantify the performance of irrigation and drainage systems not only for the. Water quality and quantity entering and exiting each watershed were measured with automated samplers during the irrigation season. Irrigation inflow to watersheds and outflow from watersheds did not decrease as sprinkler irrigated area increased.
This probably results from the flow rate allocation system used on the Twin Falls irrigation by: 2.There are many factors that affect return flow quality, including flow volume and hydrology, land use and management, climate, and topography. Studies in Alberta have examined the impact of irrigation return flow on receiving streams or rivers (Greenlee et al.
; Ontkean et al. ). Results from these studies were inconclusive. Depending.Water management is an important element of irrigated crop production. Efficient irrigation systems and water management practices can help maintain farm profitability in an era of limited, higher-cost water supplies.
Efficient water management may also reduce the impact of irrigated production on offsite water quantity and quality. However.