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<br />I <br /> <br />I <br /> <br />Consumptive Use Model Terms <br /> <br />I <br /> <br />. Surface Runoff (Ro) - The quantity of precipitation or irrigation water that does not enter the soi I <br />profile (water in excess of infiltration rates) and therefore is not available to crops. This water is <br />transported to surface water features such as rivers or streams. <br /> <br />. Transpiration - The process by which water in plants is transferred as vapor in the air. <br /> <br />. Permanent Wilting Point (PWP) - The permanent wilting point is the moisture percentage, also <br />on a dry weight basis, at which plants can no longer obtain sufficient moisture to satisfy moisture <br />requirements and will wilt permanently unless moisture is added to the soil profile. <br /> <br />I <br />I <br />I <br />I <br /> <br />I <br /> <br />I <br />il <br />I <br />I <br /> <br />I <br />I <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Version J.J <br /> <br />2J <br /> <br />Miscellaneous Consumptive Use Terms <br /> <br />I <br />