Measurement of irrigation water

by W. L. Powers

Publisher: Oregon Agricultural College, Extension Service in Corvallis, OR

Written in English
Published: Downloads: 384
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  • Irrigation water -- Measurement.

Edition Notes

Statementby W.L. Powers.
SeriesCircular -- no. 4., Circular (Oregon Agricultural College. Extension Service) -- 4.
ContributionsOregon Agricultural College. Extension Service.
The Physical Object
Pagination[5] leaves :
ID Numbers
Open LibraryOL16133467M

Measurement of water use efficiency and water productivity Crop scientists express and measure water use efficiency as the ratio of total biomass or grain yield to water supply or evapotranspiration or transpiration on a daily or seasonal basis (Sinclair et al., ). . Irrigation can be broadly defined as the practice of applying additional water (beyond what is available from rainfall) to soil to enable or enhance plant growth and yield, and, in some cases, the quality of foliage or harvested plant parts. The water source could be groundwater pumped to the surface, or surface water diverted from one position on. CALCULATION EXAMPLE. QUESTION. Calculate the irrigation water need (IN) of paddy rice for the month of April when given: ETo = 6 mm/day Kc = the root zone has already been saturated in the previous month PERC = 5 mm/day the water layer ( mm) needs to be established during April Pe = mm/month ANSWER. IN = ET crop + SAT + PERC + WL - Pe. development and maintenance of reporting systems for water diversion measurements; Guidelines. Use the following guidelines and procedures to collect water measurement data and report that information to IDWR. Using these procedures provides a uniform measuring and reporting method within the State of Idaho, including within water districts.

Fig. tion water use efficiency of cotton (Gossypium arboreum) in response to a combination of six evapotranspiration (ET) replacement treatments and four irrigation durations in a semi-arid point represents an average of 31 values over 31 growing seasons. Irrigation duration started on 24 June for incrementally increasing duration to 4 wk (21 July), 6 wk (4 August), 8. Volumetric Measurement of Irrigation Water Use| • Change in the elevation of water stored in an irrigation water-supply reservoir • Measurement of time of irrigation and size of irrigation delivery system. Estimating irrigation water use from an indirect method can be as accurate as a direct measurement.   You'll see measurements such as 3/4", 1", etc. If your in a rural area and your water comes from a well then you'll need to look search the well lid or even reference the good ole' manual. Now we know our meter size and water flow rate so you . The injection of acid to the irrigation water should be, as much as possible, uniform and continuous, throughout the entire duration of the irrigation. In automated control fertigation systems – if the acid in the tank is too concentrated it will result in fluctuations in the pH of the nutrient solutions, i.e. the pH will go up and down.

  Throughout the world, irrigation (water for agriculture, or growing crops) is probably the most important use of water (except for drinking and washing a smelly dog, perhaps). Irrigation water is essential for keeping fruits, vegetables, and grains growing to feed the world's population, and this has been a constant for thousands of years. Water and wastewater treatment facilities have the critical job of producing a safe supply of high quality drinking water. Their operational processes are complex and involve a wide range of flow measurement tasks. These applications demand the highest flow meter accuracy and reliability, as well as long-term stability and a low cost-of-ownership. In the case of irrigation management with an Irrigation Water Meter, the regulated water deficit is established simply with the change of the water level in the interior of the evaporation reservoir, positioning the mark of the sliding rod in a lower value in the level ruler than the one recommended by the manufacturer of the equipment for each. Good management is taking the guesswork out of irrigation. Combined with prescribed timing for irrigation specific crops, irrigation management involves measuring water at deliver points to determine exact amounts going to the field. There are several devices an irrigator can install for measuring water deliver in irrigation ditches or pipelines.

Measurement of irrigation water by W. L. Powers Download PDF EPUB FB2

Effective irrigation water management begins with accurate water measurement. Water measurement is required to determine both total volumes of water and flow rates pumped. Measurement of volumes will verify that the proper amount of water is applied at each irrigation and that amounts permitted by water management districts are not exceeded.

Extension Irrigation Specialist Irrigation water management begins with knowing how much water is available for irrigation. Fact Sheetdiscusses water measurement units and useful factors for converting from one measurement unit to another. The purpose of this fact sheet is to discuss a few basic methods of water flow Size: 2MB.

Water measurement manual: A manual pertaining primarily to measurement of water for irrigation projects (A water resources technical publication) Unknown Binding – Import, January 1, by United States (Author) See all formats and editions Hide other formats and editions.

Price New from Used from Paperback "Please retry" Author: United States. Additional Physical Format: Online version: United States. Bureau of Reclamation. Measurement of irrigation water. Washington: U.S.G.P.O., (OCoLC) The first edition of the Water Measurement Manual () had a distribution of 11, copies and was compiled from the Bureau of Reclamation (Reclamation) publication Manual for Measurement of Irrigation Water ().

This previous manual had five earlier editions beginning in and extending to The continual demand for the Water. Abstarct. One of the major problems in surface irrigation system is the low efficiency of irrigation water. A measure that is essential for reducing waste and ensuring more efficient use among farmers is metering the volumes of water supplied and charge for : M.

Ali. Irrigation Water Measurement. Introduction. The material provided in this section is intended to serve as a framework for irrigation water measurement training. For a pdf document that contains the introduction, objectives, and suggested outline, click here. Suggested Objectives. Sorry, you do not have a browser that supports frames.

irrigation water by the user is a necessary activity in our existence as a • Measurement of irrigation water • Design of pumping plants • Design criteria and design procedures for surface, sprinkler, and book series.

The document was initially prepared by Elwin A. Ross, irriga-tion engineer, NRCS, Engineering Division, Washington. 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.

This will require, as a minimum: (a) the accurate measurement of soil-water depletion volume and the. Irrigation water can be fed to the border in several ways: opening up the channel bank, using small outlets or gates or by means of siphons or spiles.

A sheet of water flows down the slope of the border, guided by the bunds on either side. (see Figure 4). Sec. 15, Chapter 6 - Contour-Levee Irrigation PDF Electronic Version. PartChapter 7 - Microirrigation PDF Electronic Version. PartChapter 8 - Irrigation Pumping Plants PDF Electronic Version.

PartChapter 9 - Water Measurement Manual (current version of the Bureau of Reclamation's Water measurement Manaual). HUNTER Handbook of Technical Information FORMULAS GENERAL 2 GENERAL SLOPE Slope, as used in irrigation, is a measure of the incline of an area.

It can be described as (1) a percent, formula “A”, (2) a degree, formulas “B” and “C”, or (3) a ratio, formula “D”. this book Measuring water in irrigation channels.

One of 1, books in the series: Farmers' bulletin (United States. Dept. of Agriculture) available on this by: 6. Measuring irrigation flow contributes to better management and scheduling of irrigation events, thus improving profitability.

Such measurements are needed to evaluate the performance of an irrigation pumping plant. Irrigation flow measurements also are a tool for quantifying irrigation water use and are useful in evaluating the effects of. Irrigation Best Management Practices depend upon conservation of water and the key to conservation is accurate water measurement.

(NEH 9, Chapter 1) Water is measured in a variety of ways. Measuring equipment commonly used include, weirs, flumes, submerged orifices, current meters, acoustic meters, and various other open channel and closed.

Irrigation Water Measurement Danny H. Rogers Extension Agricultural Engineer Richard D. Black Extension Agricultural Engineers Cooperative Extension Service Kansas State University Irrigation is the largest water use in Kansas.

There are about 3 million irri-gated acres, of which nearly 95 percent. The book presents the factors affecting the phenomena/parameter related to irrigation, exploring the relationship of irrigation need to the relevant factors, laboratory and field measurement procedures of their measurement (principles, background theory, and detail working methods).

IRRIGATION WATER MEASUREMENT IRRIGATION DITCHES AND PIPELINES Cooperative Extension Service College of Agriculture Bulletin R UNIVERSITV OF lce ofCooperntive Extension work, acts of May 8. Tolerance of various crops to the salinity of irrigation water is given in Tables 3a-d.

They may be used as a guideline for selecting crops based on the available irrigation water salinity. Table 2. A brief guideline for the assessment of salinity hazard of irrigation water (Adapted from Ayres and Wescot, ; Western Fertilizer Handbook, ). means of water measurement based on volume.

1 CCF equals gallons. e) Pounds per square inch (PSI): Water pressure in irrigation systems is measured in PSI. Determining your irrigation system’s specific PSI is important in irrigation planning. f) Distribution Uniformity (DU): A measure of how uniformly water is applied to the area.

This book is a comprehensive treatise on water resources development and Irrigation management. For the last 30 years the book has enjoyed the status of an encyclopedia on the subject, and in spite of the various innovations during the period, it has been in circulation because of its authoritative approach.

Measuring Irrigation Water in a Ditch, Stream or Reservoir Mark Peterson and C.F. Cromwell, Jr. Department of Agricultural Engineering Measuring water is necessary to efficiently use water resources in irrigation farming.

Over-irrigation can be as detrimental as under-irrigation and is. Buy Distribution, control, and measurement of irrigation water on the farm (Miscellaneous publication / United States Department of Agriculture) on FREE SHIPPING on qualified orders. Additional Physical Format: Online version: Robinson, A.

(August Robert), Distribution, control, and measurement of irrigation water on the farm. water use and irrigation management, along with some references on irrigation systems. Proper water management planning must consider all uses of water, from the source of irrigation water to plant water use.

Therefore, it is very important to differentiate between crop water requirements and irrigation or production system water requirements. measurement will encourage more irrigation companics and farmers to measure their irrigation water and to strive to increase efficiencie~ in the use of existing water supplies.

This bulletin should be useful not only to irrigation farmers, water masters and ditch riders, but also to county agricultural agents, agricul­ tural research workers. is the static water pressure in pounds per square inch or PSI.

Water volume (GPM) To determine the volume of water available for the system, you need two pieces of information: A. What size is the water meter. Water meters will generally have the size stamped on the meter body.

The most common sizes for residential meters are 5/8", 3/4", and 1". applying irrigation water to the land. In surface irrigation the soil is the reservoir from which the plants draw the water they need.

The soil also con- veys and distributes the water over the field. In sprinkler irrigation the water is conveyed above the field in pipes, and the soil acts as a storage reservoir. In subirrigation the water flows. of Water Resources and the Idaho Water Users Association.

Excerpts from otht;r publications have been added for several measuring structures which are shown in the video but not covered in the University of Idaho Bulletin.

Copies of the video, "Let's Measure Up", may be obtained through the Idaho Water. Begin by selecting the type of measurement unit used by your irrigation flow meter.

The units are usually located just below the rolling numbers (like the odometer on your car). For maximum profits, irrigation water must be applied on a schedule that makes most efficient use of water and energy.

The amount of water available to the plants from the soil determines when and how much irrigation water to apply. Thus the first step in irrigation scheduling is to measure the moisture content of the soil.highly variable quantities so irrigation water tests also measure the presence of these plant essential nutrients.

This information allows growers to determine if some ele - ments can be reduced or even removed from the fertility. 3 regime in the event that they are already present in the ir .