30 



BULLETIN 1000, U. S. DEPARTMENT OF AGRICULTURE. 



HOURS 



JAN. 

 10 20 



FEB. 



1020 



MAR 

 10 20 



APR. 



10 20 



MAY 



10 20 



JUN. 



1020 



JUL. 



10 20 



AUG. 



10 20 



SEPT. 



10 20 



OCT. 



10 20 



NOV. 



10 20 



DEC. 



10 20 



HOURS 



11 

 10 



9 

 8 

 7 

 6 

 5 

 4 

 3 

 2 

 1 

 









































































11 



10 



9 

 8 



7 



6 

 5 

 4 

 3 

 2 

 1 

 



HOURS 

 11 



10 

 9 

 8 



7 

 6 



5 



4 



3 



2 

 1 













MAN LABOR 







WHEAT 



BASED ON COST ACCOUNTING DATA 



FROM 



WESTERN NORTH DAKOTA 





















































































































































































































































































































































































































































































































































































































22.4 | 152 



.3 



1 26.9 1 29 6 



5.6 









PERCENTAGE DISTRIBUTION 



HOURS 

 11 

 10 

 9 

 8 

 7 

 6 

 5 

 4 

 3 

 2 

 1 

 









34.0 



23.3 







19.0 



15.9 



7.8 



















































































HORSE LABOR 









































































































































































































































































































































































































































































































































































J 



































































1 



































































1 

















flfelt 



. 



■ 



■ 



. 













10 20 



JAN. 



10 20 

 FEB. 



10 20 



MAR. 



10 20 

 APR. 



10 20 

 MAY 



10 20 



JUN. 



10 20 

 JUL. 



10 20 



AUG. 



10 20 



SEPT. 



10 20 



OCT. 



10 20 



NOV. 



10 20 



DEC. 



FiQ. 8.— Distribution of man labor and horse labor per acre for 16 farms, representing the production of 

 960 acres of wheat. On eleven of these farms the thrasher furnished a part or all of the crew for thrashing. 

 Black bars indicate total hours spent per acre during 10-day periods. 



