COST OF PRODUCING APPLES IN WESTERN COLORADO. 25 



Table XIII. — Number of irrigations (125 ranches, western Colorado). 





Mesa (49 farms). 



Delta (61 farms). 



Montrose (15 1 



arms) 



All counties 



(125 farms). 





• 







j, 







_^ 





O 



A 



j, 









































& 



o 





















Irrigation. 





fl 



03 



bs 



.ft 



1 



03 



ft 



.1 



66 



ft 

 o 

 (-1 



ft 



1 



2 



bo 





pi J 



o 



+3 



60 



03 





« bo 



P 



9 



o 

 bo 



03 



1 



is 



O 



a 

 bo 



R 



03 



o 



2 



bo 





o 



Ml 



B 



c 





t-. 



£ 



1 



u 



® 



1 



t-i 





£ 



1 





9 



1 





ft 



«J 



E-i 



ft 



-si 



e- 



ft 



-si 



Eh 



fc 



ft 



«i 



H 







.flrs. 



Hrs. 





.Hrs. 



Hrs. 





Hrs. 



flj-*. 







///.v. 



I Irs. 



First 



100 

 100 



95.9 



87.7 



51 



18.3 

 6.1 



2.78 

 2.71 

 2.67 

 2.53 

 1.95 

 1.43 

 1.01 



2.78 



2.71 



2.56 



2.22 



.99 



.26 



.06 



100 



100 

 96.7 

 85.2 

 54.1 

 21.3 

 8.2 



3.49 

 3.41 

 3.36 

 3.39 

 2.98 

 3.61 

 2.79 



3.49 

 3.41 

 3.2.5 

 2.89 

 1.61 

 .77 

 .23 



100 



100 



100 

 66.7 

 33.3 

 20 

 6.6 



3.64 

 3.32 

 3.32 

 2.32 

 2.02 

 2.08 

 1.20 



3.64 

 3.32 

 3.32 

 1.54 



.68 

 .42 

 .08 



125 

 125 

 121 

 105 

 63 

 25 

 9 



100 

 100 



96.8 



84 



50.4 



20 

 7.2 



3.23 

 3.12 

 3.09 

 2.94 

 2.50 

 2.64 

 2.02 



3.23 





3.12 



Third 



2.99 





2.47 



Fifth 



1.26 



Sixth 



.53 





.15 







Table XIII shows that the greatest t ; me is required for the first 

 irrigation, with a slightly shorter time for the second and third, and 

 that thenceforward the time decreases with each irrigation. This is 

 due to the fact that the fifth, sixth, and seventh irrigations are per- 

 formed only by those men who water their orchards lightly and often, 

 while the first three irrigations include all who water heavily and but 

 three times during the season. Thus it will be seen that the average 

 time for irrigation falls off as the number of irrigations per season 

 increase. 



The number and the length of furrows naturally influence the time. 

 Where furrows are long it takes considerable time for the water to 

 reach the far end; furthermore, the soil tends to become oversatu- 

 rated at the head of the furrow. The number of furrows Varies from 

 3 to 8, with an average of 5, about an equal number using 4, 5, and 6 

 furrows. The number of furrows, of course, depends on width of row, 

 tool used, kind of soil, and how long the water is to be left on. The 

 farther the furrows are apart the longer the water is left on. This time 

 varies from 12 to 72 hours, but is usually between 36 and 48 hours. 

 The number of sets necessary depends on the quantity of water used. 

 The usual allowance in the Grand Valley is one-half inch per acre. 

 In the other counties this figure varies. 



Table XIV. — Cost summary for all irrigations (125 ranches, western Colorado). 



Per acre. 



Mesa. 



Delta. 



Mont- 

 rose. 



Three 

 counties. 





11.59 



$2.90 



15.66 

 $3.91 



12.99 

 $3.25 



13.74 



Cost 



$3.44 







A comparison of time required throughout the region for irrigating 

 in sod orchards and in orchards under clean cultivation shows that 

 under clean cultivation the time averages about one-half hour longer 



