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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />2491 <br /> <br />COLORADO UTE - AGRICULTURAL ENGINEERING STUDY <br /> <br />CALCULATION SUMMARY, FAO MODIFIED BLANEY CRIDDLEl/ <br />ALFALFA AT FORT LEWIS <br />TABLE A-l.6 <br /> <br />y <br />~/ <br />l/ <br />1/ <br />~/ <br />Y <br />2/ <br /> <br />MAY <br /> <br />JUN <br /> <br />JUL <br /> <br />AUG <br /> <br />SEP <br /> <br />OCT <br /> <br />T, degrees C 9.5 14.2 IB.O 16.8 13.0 7.6 <br /> <br /> <br />P(% yearly daylight) .315 .330 .325 .305 .280 .250 <br /> <br />2/ <br />F- 3.90 4.80 5.29 4.80 3.91 2.87 <br />3/ <br />RHmin- .22 .22 .23 .22 .27 .24 <br /> <br />4/ <br />Uday-(m/s) 3.8 3.3 3.0 2.8 2.7 2.7 <br /> <br />5/ <br />n/N- .71 .78 .77 .74 .79 .77 <br /> <br />ETo mm/day 4.20 5.75 6.38 5.49 4.02 2.42 <br /> <br /> <br />ETo in/mo 5.18 6.79 7.79 6.70 4.75 2.95 <br /> <br />7/ 6/ <br />ETcrop-(in/mo) 5.8 7.7 8.9 7.6 5.4 1.9- <br /> <br />Growing Season <br /> <br />+-------------------------------~ <br /> <br />11 <br /> <br />11 <br /> <br />11 <br /> <br />ETp = C[P(0.46 x T)+ 8J <br />P(0.46xT+8) <br /> <br />Grand Junction, 5 p.m. <br /> <br />Wind, FAO Penman Method (Farmington). <br /> <br />Ratio, actual to maximum possible sunshine hours. <br /> <br />ET for first two weeks in October. <br /> <br />Includes crop coefficient of 0.95 and 20% increase in <br />elevation. <br /> <br />l- 28 <br /> <br />SEASON <br /> <br />37.3 <br />