It is important to estimate the fraction of wdel that cools and humidifies the microclimate causing evapotranspiration (et) suppression. Innovations have increased the water application efficiencies of center pivot irrigation systems To enhance irrigation efficiency, at least three different types of irrigation technologies have been developed by the irrigation industry Currently most center pivots use mid elevation spray application (mesa) They are spaced about 10 ft apart, and the irrigation application efficiency is typically about 85% as measured with catch can tests without. Two manufacturers (nelson and senninger) have spray applicators which require only 10 psi at the nozzle and which can be located at this height.
It is important to estimate the fraction of wdel that cools and humidifies the microclimate causing evapotranspiration (et. Use nozzle weights and flexible drop hoses to reduce water loss and improve water distribution The objective of this study was to evaluate the water application efficiency (wae) of low and of mid elevation spray application (lesa and mesa) using catch can test and drainage lysimeters, and develop governing equations based on the weather variables. Low elevation spray application (lesa) applicators are positioned 12 to 18 inches above ground level, or high enough to allow space for wheel tracking Less crop foliage is wet, especially when planted in a circle, and less water is lost to evaporation.
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