3 edition of Effects of farming practices on sediment in irrigation return flow found in the catalog.
Effects of farming practices on sediment in irrigation return flow
Larry G. King
|Statement||Larry G. King, Albert C. Janke.|
|Contributions||Janke, Albert C., State of Washington Water Research Center., Washington State University. College of Agriculture. Research Center., United States. Office of Water Research and Technology.|
|The Physical Object|
|Pagination||vi, 91 p. :|
|Number of Pages||91|
Principles and Practices of Irrigation Management for Vegetables 2 Irrigation Water Quality Criteria Understanding irrigation water quality is critical for sustainability of vegetable production. In some areas of Florida, water quality impacts crop productivity more than soil fertility, pest and weed control, variety, and other factors. Based on this study, irrigation districts will not need to mitigate for the temperature of irrigation return flow if water temperature standards are set for the river, especially if subsurface drainage contributes to the return flow. 02 Conservation practices reduce sediment phosphorus losses .
In the US, it remains the main source of pollution of drinking water reservoirs .In a study, three dozen environmental scientists undertook an ambitious task of identifying the harmful effects of agricultural runoff across the U.S. in order to understand and help manage it better .. Contaminated water, through rivers and streams, ends up in water reservoirs that provide drinking. Agricultural technology - Agricultural technology - Chemicals: Organic chemicals in soil and water, such as detergents, insecticides, herbicides, fungicides, nematocides, rodenticides, growth regulators, and defoliants, can have adverse effects on agriculture. The application of persistent insecticides to potato lands has led to residues in sugar beets grown in the same soil the following year.
The aim of this study was to improve understanding of (a) the effects of bypass flows due to irrigation on the calibration of SWAT model, (b) irrigation return flow (IRF) and/or drainage generating processes, and (c) N leaching dynamics with simulation of agricultural land management (fertilization, irrigation, and plant species) under. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.
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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 cooperative research project studied the effects of on-farm im- provements to reduce the discharge of sediment and nutrients (nitrogen and phosphorus) from the tract via irrigation return flow.
Both technical and financial (cost-sharing of construction) help were given to the participating farmers. Annual sediment loss (r=, P=) and concentration (r=, P=) correlated with irrigation inflow-the more irrigation water delivered to a watershed the greater the outflow sediment.
The project is focused on the Twin Falls irrigation district, which cov ha of irrigated agriculture. The main conservation practice affecting water quality is conversion from furrow.
The sediment in the concentrated flow of ephemeral gullies can be partly deposited in fans outside the irrigation circles, with the remainder moving as overland flow that may reach a watercourse.
The degree of sheet & rill and ephemeral gully erosion and associated sedimentation in sprinkler-irrigated areas may be caused in part by pre-existing. The intensification of agriculture can lead to groundwater pollution related to the increased use of pesticides and fertilizers.
Improved efficiency may significantly reduce return flows which are often utilized downstream by other irrigation schemes or wildlife habitats. Irrigation has contributed significantly to poverty alleviation, food security, and improving the quality of life for rural populations.
However, the sustainability of irrigated agriculture is being questioned, both economically and environmentally. The increased dependence on irrigation has not been without its negative environmental effects.
Irrigation return‐flow quality was improved by PAM‐use, greatly reducing sediment losses, biochemical oxygen demand (BOD), total P, and various pesticides. Polyacrylamide products are now registered in most western states and the Natural Resources Conservation Service (NRCS) has published a PAM‐use practice standard.
have significant flow for at least part of the year. In contrast, irrigation systems based on ground water can be located nearly anywhere that has an adequate ground-water resource. Areas of significant rise and decline in ground-water levels due to irrigation systems are shown in Figure N–2.
A major conservation practice in the Upper Snake-Rock (USR) watershed is the conversion from furrow irrigation to sprinkler irrigation.
We compared the effect of irrigation system type on water quality and quantity at the watershed scale. Six small watersheds ( ha) were identified with 5 to 70% of the cropland sprinkler irrigated and the remaining fields surface or furrow irrigated.
irrigation systems on water quality of return flows and the effects of conservation practices on sediment and phosphorus in irrigation return flows.
Watershed Description • Receives approximately 10 inches of precipitation per year. • Nearly all water used by crops is delivered by irrigation systems, diverted from the Snake River.
To address issues of increased demands on water supplies and water quality degradation within the Buffalo Rapids Irrigation District of eastern Montana, irrigation management Best Engineering Practices (BEPs) and Best Management Practices (BMPs) have been implemented.
However, limited validation exists of water quality improvements resulting from these efforts, limiting confidence in. Impact of Irrigation Return Flow on Streamflow  We wish to examine the impacts of return flow from surface‐water‐irrigation on streamflow. Return flow occurs both as (1) surface water runoff back to the stream, more or less immediately, and (2) flow through the associated groundwater system.
An Influent Control Approach to Quality Management. Proceedings on National Conference on Irrigation Return Flow Quality Management, Colorado State University, Fort Collins, Colorado.
Maypp. Skogerboe, G.V. and J.P. Law, Jr. Research Needs for Irrigation Return Flow Quality Control. / All of these effects occur at or near the erosion site. Off-site impacts relate to the transport of sediment, nutrients, and agricultural chemicals and can be even more costly than on-site impacts.
Severe economic and environmental costs are associated with the removal of sediment deposits from roads and from lakes and other surface water bodies. (DEM) was derived from Shuttle Radar Topography Mission (SRTM) at 30 m resolution. SWAT Model. SWAT is a river or watershed, spatial model developed to predict the impact of land management practices on water, sediment hydrodynamics, and agricultural chemical yields in large complex watersheds with varying soils, land use, management conditions and weather conditions.
Agriculturalists are aware of the substantial negative effects of agriculture on water resources and have developed methods to alleviate some of these effects. For example, tillage practices have been modified to maximize retention of water in soils and to minimize erosion. Table 2. Water volume, nutrient/sediment concentrations, and nutrient/sediment loads in diverted irrigation water and irrigation return flow from to J for the Twin Falls Canal Co.
Source Water Volume (m3) Dissolved NH 4 Dissolved NO 3 Dissolved P Total Suspended Solids. Because irrigation return flow conveys sediment and nutrients to rivers, it is possible that these return flows could be regulated to meet TMDL limits.
To reduce water quality impacts of irrigation on river systems, practices that reduce TSS and nutrient transport through irrigation return flow. Water quantity and quality are being measured in an 82, ha irrigation district in southern Idaho to determine the effects of conservation practices, primarily conversion from furrow to sprinkler irrigation, for the Conservation Effects Assessment Project (CEAP).
The percentage of sprinkler irrigated land has steadily increased from about 10% in to more than 30% in. Agricultural water management and the environment., either type of return flow will affect the receiving water in proportion to respective discharges and the relative quality of the receiving water.
The quality of irrigation water and return flow is determined largely by the amount and nature of the dissolved and suspended materials they.For irrigated agriculture in general, and for gravity irrigation in particular, FRIS survey data suggest that producers give more emphasis to such conventional practices as reducing irrigation set times, alternating furrow irrigation (for row crops), and using end-of-field dikes to restrict field runoff (USDA/NASS,b).
Use.This probably results from the flow rate allocation system used on the Twin Falls irrigation tract. Annual sediment loss (r=, P=) and concentration (r=, P=) also did not correlate with the relative amount of sprinkler irrigated area. Annual sediment loss (r=, P=) and concentration (r=, P=) correlated with.