BULLETIN 654, U. S. DEPARTMENT OF AGRICULTURE. 
total receipts on 178 farms out of a total of 627, and contributing 
24.9 per cent of the total receipts of all the farms studied. It is 
also one of the most profitable enterprises, both farm income and 
farmer's wages rising with the percentage of receipts from dairying. 
Dairying can be made more profitable by improving the system of 
pasturing and keeping up the thrift of the alfalfa fields; also by im- 
proving the dairy herds. 
_._: J 
Fig. 1.— Map of Arizona, sho-wing location of regions studied (shaded areas). 
Growing alfalfa for hay ranked next in popularity to dairying, 
when judged by the number of farmers engaged in it, but it was^ 
not so profitable except with maximum yields, which must approach 
7 tons per acre, and at prices approaching $10 per ton. Both farm 
income and farmer's wages decrease as the percentage of receipts 
from hay increases. 
The production of alfalfa seed for the market is highly profitable 
in Yuma Valley, but the enterprise has not been developed in the 
other two valleys. 
