Search results with tag "Irrigation water"
Chapter 9 Irrigation Water Management - USDA
www.nrcs.usda.govChapter 9 Irrigation Water Management Part 652 Irrigation Guide (210-vi-NEH 652, IG Amend. NJ1, 06/2005) NJ9-1 NJ652.09 Irrigation Water Management (a) General Irrigation water management is the act of timing and regulating irrigation water applications in a way that will satisfy the water requirement of the crop without the
PART-B MAIN EXAMINATION - INSIGHTSIAS
www.insightsonindia.comWater-use efficiency in relation to crop production, criteria for scheduling irrigations, ways and means of reducing run-off losses of irrigation water. Rainwater harvesting. Drip and sprinkler irrigation. Drainage of waterlogged soils, quality of irrigation water, effect of industrial effluents on soil and water pollution.
Protecting Water Quality A GRICULTURAL UNOFF R
www.epa.govIrrigation Irrigation water is applied to supplement natural precipitation or to protect crops against freezing or wilting. Inefficient irrigation can cause water quality problems. In arid areas, for example, where rainwater does not carry minerals deep into the soil, evaporation of irrigation water can concentrate salts. Excessive irrigation can
Reclaimed Water for Citrus Irrigation in Florida
www.irrigation.orgstricter water quality standards. In addition to the normal treatment, advanced secondary treatment . ... During freezes, there is a high demand for irrigation water, and the reclaimed water provided to citrus groves is supplemented with well water for frost protection in order to meet that demand. Most groves
Chapter 2 Irrigation Water Requirements - USDA
www.wcc.nrcs.usda.govTodays management of irrigation water requires using the best estimate that current technology can provide for the determination of crop water use and field irrigation water requirements. Support for many of the estimated values included in this chapter come from field research and many field evaluations over many years.
EFFECTS OF HUMAN ACTIVITIES ON THE INTERACTION OF …
pubs.usgs.govSurface-water irrigation project EXPLANATION Figure N–1. Nebraska is one of the most extensively irrigated States in the Nation. The irrigation water comes from both ground-water and surface-water sources. Dots are irrigation wells. (Map provided by the University of Nebraska, Conservation and Survey Division.)
Rain Bird Landscape Irrigation Design Manual
www.rainbird.comirrigation water that is wasted every year. In some water short areas, we have seen the beginnings of planned water conservation efforts. In time, these could become the basis for a coordinated national policy toward water conservation. Today many municipalities require home or business owners to submit irrigation designs for approval prior to ...
Turlock Irrigation District selected to pilot first-in-the ...
www.tid.orgTurlock Irrigation District (TID) The Turlock Irrigation District, located in Turlock CA, is the first publicly owned Irrigation District and is one of only four today that provides irrigation water and power to residential, commercial, industrial and agricultural customers within its service area. TID has been in the retail electric
HO-111: Understanding Irrigation Water Test Results and ...
www2.ca.uky.eduThe pH of irrigation water is a concern but must be considered in the context of the alkalinity of the water. It is a common misconception that the pH of the water
Assessing the Suitability of Water (Quality) for ...
erams.comsupply or the quality of irrigation water. Supplies of good-quality water, well-matched to crop irrigation, were plentiful, generally uncontested, and not neces-sarily closely monitored or regulated. However, growing competition for and ac-countability of the use of water have contributed to
The green, blue and grey water footprint of crops and ...
waterfootprint.orgassess global water consumption in agriculture at high spa-tial resolution. The earlier estimates focus on the estima-tion of blue water withdrawal (Gleick, 1993; Alcamo et al., 2007) and irrigation water requirements (D¨oll and Siebert, 2002). More recently, a few studies have separated global water consumption for crop production into green ...
BLUEBERRY IRRIGATION WATER QUALITY - CAS
secure.caes.uga.eduacidic soil with a pH of 4.0 to 5.5, and irrigation water can have a significant impact on production. Test water quality before planting to determine whether the water is suitable for plant growth and production.
Landscape Irrigation & Florida-Friendly Design Standards
www.swfwmd.state.fl.usThe system shall be designed to use the lowest quality water feasible. Standards T. 6 Landscape Irrigation and Florida-Friendly Design Standards G. Rain switches or other devices, ... irrigation water use, at a minimum of ninety-five percent accuracy across the flow range.
Role of Dams for Irrigation, Drainage and Flood Control
www.icid.orgwater management systems. They divert water, they retain it over long periods of time to use it effectively and they attenuate floods and alleviate impacts of droughts. They relieve drainage congestion, and they provide for the timely and continuous supply of irrigation water needed to meet the demands of crops and livestock.
2. DESIGN OF SURFACE IRRIGATION SYSTEMS
memberfiles.freewebs.com2.2. When water is applied to the field, it 'advances' across the surface until the water extends over the entire area. It may or may not directly wet the entire surface, but all of the flow paths have been completed. Then the irrigation water either runs …
Table 4 - USGS
pubs.usgs.govTable 4. Water-quality criteria, standards, or recommended limits for selected properties and constituents [All standards are from U.S. Environmental Protection Agency (1994a) unless noted. ... Important in irrigation water; the greater the SAR, the less suitable the water for irriga-tion.
Agricultural Water Pricing: United States - OECD.org
www.oecd.org6 Executive Summary Prices and costs pertaining to irrigation water in the United States vary substantially with geographic location, water sources, and institutional arrangements.
Solar-Powered Irrigation Systems
www.fao.orgthe pre-determined irrigation water requirement of the crop(s); Appropriate water quality: e.g. sufficiently low levels of salinity or heavy metal concentrations. The level of solar irradiation is strongly location-specific and depends on geographic latitude and clearness of the sky. The higher the irradiation, the smaller the required area of
Crop evapotranspiration - Guidelines for computing crop ...
appgeodb.nancy.inra.frThe irrigation water requirement also includes additional water for leaching of salts and to compensate for non-uniformity of water application. Energy balance The energy arriving at the surface must equal the energy leaving the surface for the same time period.
Maize Production Technologies in India - Farmer
farmer.gov.inUsing raised bed planting technology, 20-30 % irrigation water can be saved with higher productivity. Moreover, under temporary excess soil moisture/water logging due to heavy rains, the furrows will act as drainage channels and crop …
Sodic soil management - Department of Primary Industries
www.dpi.nsw.gov.auUsing saline irrigation water Many farmers are now using bore water to irrigate crops and pastures. However, be careful with this as you may experience problems, including: • a build-up in soil salinity and therefore a decrease in crop production • an increase in soil salinity in districts such as the Murrumbidgee
PLANTS for SALINE to SODIC SOIL CONDITIONS - USDA
www.nrcs.usda.govirrigation water management can result in similar salinity problems. The solution to salinity problems lies in the prevention of upward salt movement. This may require cropping and management systems to capture and utilize excess soil moisture through perennial cropping rather than crop-fallow systems, selection of
PROJECT: PROPOSED SOLAR POWERED PUMPING SYSTEMS …
www.afdb.orgthe diesel-powered irrigation water pumping, (ii) Supply of additional testing equipment for the solar PV pumps testing laboratory to ensure quality standards, testing and certification, training and capacity building, (iii) Project management and supervision that includes supervision of the supply and installation works
Irrigation Water Quality Criteria - Spectrum Technologies
www.specmeters.comis the quality of irrigation water being used. Besides affecting crop yield and soil physical ... Another potential irrigation water quality impairment that may affect suitability for ... Irrigation water acre inch 27,150 gallons of water
Irrigation Water Quality Standards and Salinity Management ...
soiltesting.tamu.eduIrrigation Water Several different measurements are used to classify the suitability of water for irrigation, including EC iw, the total dissolved solids, and SAR. Some permissible limits for classes of irrigation water are given in Table 4. In Table 5, the sodium hazard of water is ranked from low to very high based on SAR values ...
Irrigation water quality - Department of Primary Industries
www.dpi.nsw.gov.auIrrigation water quality . Virginia Brunton, Ourimbah . Farm water comes from a number of different sources and so its quality varies. Water sources ... The generally accepted pH for irrigation water is between 5.5 and 7.5, but some problems can occur within this range.
Irrigation Water Quality Standards and Salinity Management ...
irrigation.tamu.eduindustrial waste water can impact water quality. In most irrigation situations, the primary water quality concern is salinity levels, since salts can affect both the soil structure and crop yield. However, a number of trace elements are found in water which can limit its use for irrigation. Generally, “salt” is thought of as ordinary table salt
Water use efficiency in agriculture: Measurement, current ...
publications.iwmi.orgwater input efficiency, irrigation water use efficiency and crop water use efficiency (Barrett Purcell & Associates, 1999). Whereas crop water use efficiency compares an output from the system (such as yield or economic return) to crop evapotranspiration the irrigation efficiency often compares an output or amount of water retained in the root
WATER QUALITY GUIDELINES - International Water Association
www.iwa-network.orgScope The South African Water Quality Guidelines for Irrigation Water Use is essentially a user needs specification of the quality of water required for different irrigation uses. It s i intended to provide the information to make judgements on the fitness of water to be
WATER QUALITY REGULATIONS - Faolex
extwprlegs1.fao.orgWATER QUALITY REGULATIONS ... Ninth Schedule : Standards for Irrigation Water Tenth Schedule : Quality Standards for Recreational Waters Eleventh Schedule: Fees ii . 4 ... Water Quality Standards 8. All operators and suppliers of treated water, containerized water and all
Irrigation salinity – causes and impacts
www.dpi.nsw.gov.auregional groundwater system forcing saline groundwater into waterways. Irrigating with saline water adds salt to the soil and increases the need for applying more irrigation water to leach salts past the plant root zone. Salt affects plants through: 1. direct ion toxicity to plant tissue e.g. leaf burn . 2. altered nutrient interactions e.g ...
IRRIGATION - University of Wyoming
www.uwyo.eduirrigation water quality is critical to understanding what management changes are necessary for long-term productivity. Irrigation Water Quality Criteria Soil scientists use the following categories to describe irrigation water effects on crop production and soil quality:
Irrigation Guide - USDA
www.nrcs.usda.govirrigation water by the user is a necessary activity in our existence as a society. Competition for a limited water supply for other uses by the public require the irrigation water user to provide much closer control than ever before. The importance of irrigated crops is extremely vital to the public's subsistence.
Water-Quality Criteria - USGS
pubs.usgs.govImportant in irrigation water; the greater the SAR, the less suitable the water for irrigation. Bicarbonate -- In combination with calcium and magnesium forms carbonate hardness. ... Water-quality criteria, standards, or recommended limits and general significance for selected properties or constituents—Continued [Modified from Hamilton and ...
IRRIGATION WITH TREATED MUNICIPAL WASTEWATER
www.iamb.itDevelopments of standards and water quality criteria for effluent reuse in irriga ... about the quality of irrigation water in the term of its effects on the soil and on crops. Table 21 Tentative microbiological quality guidelines for waste water use in agriculture(,).
Irrigation Water Quality - Texas A&M University
cotton.tamu.eduIrrigation Water L-5417 03/02 Salinity is becoming a problem in many areas of Texas. As water quality and cropping patterns change, salinity may injure
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