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<br />t:::> <br /> <br />,. ,. F. Water budget process for each site. <br /> <br />II_~) <br />~ <br /> <br />t..:....' <br /> <br />1. Require crop consumptive use between irrigations. <br />a. EL-1 from irrigation guide prorate monthly cOlnsumptive use. <br />b. EL-2 computer computation. <br />c. EL-3 better equipment and programing. <br />d. EL-4 best equipment. <br />2. Initial soil moisture and how it affects irrigatiOlns. <br />a. EL-1 compute winter precipation effects on sOlil moisture <br />- how full is profile? Normally soil moisture at about 60% <br />of field capacity at end of October. Figure November & December <br />as rain with about 60% effective - entering soil. Figure Jan- <br />uary & February as snow with about 40% entering the soil. Figure <br />March & April as rain with about 40% entering soil because of <br />a wetter soil than in fall. <br />b. EL-2, EL-3. EL-4 figure froG! field investigation. <br />3. Final soil moisture. <br />4. Effective rainfall between irrigations. <br />a. EL-1, EL-2 - do manually. <br />b. EL-3, EL-4 - done by computer. <br />5. Gross water application. <br />6. Compute gross tailwater. <br />7. Deep percolation. <br />a. EL-1, EL-2 by manual calculator. <br />b. EL-3, EL-4 by computer. <br />8. Plot consumptive use. <br /> <br />56 <br />