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Advantages of surge irrigation <br />^ Increases irrigation efficiency 15 <br />to 30% over conventional furrow <br />irrigation <br />^ Reduces labor required to manage <br />furrow irrigated ground <br />^ Reduces soil erosion at the top of <br />the field <br />^ Reduces runoff of chemical-laden <br />irrigation water <br />Surge irrigation is used in conjunction <br />with tensiometers, which help schedule the <br />irrigation cycles. The soil moisture <br />measurement devices are installed in fields <br />at different levels in the soil profile. The <br />farmer, with the help of NCWCD <br />personnel, keeps track of how much water <br />the crop uses. Then readings of the <br />tensiometer are used to determine how <br />much water remains in the soil profile. The <br />soil profile moisture readings help farmers <br />prioritize fields for irrigation and can <br />help eliminate unnecessary watering. <br />Chlorophyll meters can also be used to <br />determine when to add fertilizer to the <br />surge irrigations. <br />For More Information Contact: <br />Mark Crookston or Brian Werner <br />Northern Colorado Water <br />Conservancy District <br />P.O. Box 679 <br />Loveland, CO 80539-0679 <br />Phone: (970) 667-2437 <br />Fax: (970) 663-6907 <br />a~a <br />57 <br />Tensiometer - <br />A tensiometer is a vacuum <br />tube with a gauge that <br />simulates the uptake of <br />water by the crop's root <br />zone. <br />