REQUIREMENTS OF FIELD CROPS. 



21 



HOURS 



JAN. 



FEB. 



MAR. 



APR. 



MAY 



JUN. 



JUL. 



AUG. 



SEPT. 



OCT. 



NOV. 



DEC. 



HOURS 



24 

 22 

 20 

 18 

 16 

 14 

 12 

 10 

 8 

 6 



4 

 2 





























24 

 22 

 20 

 18 

 16 

 14 

 12 



to 



8 

 6 

 4 



2 





SUGAR BEETS 



BASED ON ENTERPRISE RECORDS 



FROM 



GREELEY COLORADO 





















































1 I 











MAN LABOR 





























- 





















ife 































. 



























HOURS 



24 



22 



20 



18 



16 



14 



12 



10 



8 



6 



4 



.9^ .8 | 4.4 | 12.1 | 10.4 | 10.5 | 6.4 | 4.7 | 19.9 | 17.9 | 11.1 | .9 



HOURS 



24 

 22 

 20 



18 



16 



14 



12 

 10 



8 

 6 

 4 



PERCENTAGE DISTRIBUTION 



2.2 



1.9 



17.8 



11.2 



2.9 



3.3 



4.1 



2.2 



15.5 



15.5 



21.2 



2.2 





























HORSE LABOR 

































































































































































































2 

 







2 









JAN. 



FEB. 



MAR. 



APR. 



MAY 



JUN. 



JUL. 



AUG. 



SEPT. 



OCT. 



NOV. 



DEC. 





Fig. 5.— Distribution of man labor and horse labor by months, as shown by 195 enterprise survey records 

 covering 2 years and involving the production of 5,028 acres of sugar beets. The total man labor includes 

 operator's labor and contract labor, which has been converted to equivalent hours. Black bars indicate 

 total hours spent per acre during periods of one month. 



