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Detailed dimensions of uses of sprinklers (Alkali control, Application of fertilizers, Frost control, Cooling grapes, Importance of upper soil moisture: Aeration irrigation).
Sprinkler irrigation is a method of applying irrigation water which is similar to natural rainfall. Water is distributed through a system of pipes usually by pumping. It is then sprayed into the air through sprinklers so that it breaks up into small water drops which fall to the ground.
26 lis 2010 · Water application methods can be classified based on different themes: Overhead irrigation includes sprinkler irrigation and hand watering. Basin irrigation may be either “check basin” or “contour basin”. The definition of different types of irrigation systems are outlined below:
the allowable PSI loss per one hundred feet of pipe. We can determine this allowable rate of loss by dividing the allowable pressure loss (in PSI) by the critical length (in hundreds of feet) by using the formula below. The sprinklers mentioned in (Fig. 1) require 30 PSI to operate and a distance from the valve to the farthest head of 200 feet.
To obtain a reasonable degree of uniformity in the discharge of each sprinkler, the mains should be located in the general direction of the steepest slope, with the laterals at right angles thereto and as close as in practical to the contour. The usual design is based on the lateral being level.
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.” The greater the incline, the greater the tendency for runoff. A. The percent of slope can be determined by dividing the net
Sprinkler spacing and wetted diameter . Figure 2. A typical sprinkler irrigation system and its components. 4.3 Sprinklers – device of various nozzle sizes which sprays water over the ground or crop. Different types of sprinklers are shown in Annex A.
