52 BULLETIN 917, U. S. DEPARTMENT OF AGRICULTURE. 



(7) Sugar beets require the most labor for cultivation because of 

 the handwork necessary in thinning and hoeing. 



(8) Cantaloupes require the most labor for irrigating. 



(9) Alfalfa shows the lowest cost per acre for production, and 

 cantaloupes the greatest. 



(10) Oats, wheat, barley, and alfalfa hare approximately the 

 same requirement of horse labor per acre and the three grains 

 approximately the same requirement of man labor to produce the 

 crop, while alfalfa requires a somewhat greater proportion of man 

 labor per acre. Beans require approximately twice as much man 

 and horse labor as alfalfa. Beets and potatoes require more man 

 labor than beans, because of the greater marketing charge, and 

 they require about double the horse labor necessary to produce an 

 acre of beans, four times the requirement for alfalfa, and five times 

 the requirement for grain crops. 



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