10 BULLETIN 693, U. S. DEPARTMENT OF AGRICULTURE. 
Table IV. — Average acreage per farm, total tillable, irrigated, and in beets, 1914-15. 
District. 
Number 
of farms. 
Acres 
per farm. 
Acres 
tillable. 
Acres irri- 
gated. 
Acres 
in beets. 
Per cent 
of irri- 
gated 
land in 
beets. 
58 
79 
36 
86.55 
104. 71 
91.08 
48.95 
83.00 
78.54 
41.20 
44.04 
78.32 
14.36 
18.49 
20.40 
34.9 
Garland 
42.0 
Idaho Falls 
26.0 
Practically all of the tillable area on the farms in the Idaho Falls 
district was under irrigation. (See Table IV.) About 84 per cent 
of the tillable area on the farms in the Provo district was under ditch, 
while the Garland farms showed only 53 per cent. A much higher 
percentage of the irrigated land was devoted to beets at Garland than 
in the case of the Idaho Falls and Provo farms. 
COMPARISON OF FARM ESTIMATES WITH FACTORY RECORDS. 
Each sugar factory keeps a record of the acres planted to sugar 
beets on each farm. The various tracts are measured b}^ the field 
man, and the planted as well as the harvested acreage is definitely 
established. At the end of the growing season the product from each 
field is carefully weighed, and the grower is provided with a scale 
record showing the actual tonnage harvested. These figures, com- 
piled by the factory, show not only the yield per acre for each farm, 
but also the average yield for the total acreage harvested. In a study 
of this character it is therefore possible to check the grower's esti- 
mate on acreage, yield, and receipts for the sugar beet with the actual 
acreage, yield, and receipts as shown by the factory accounts. The 
estimates which obviously contained grave mistakes were discarded,, 
and the reliable figures made available for the analytical study were 
used. (See Table V.) 
Table V. — A comparison of growers' 1 estimates with factory record, 11 average acreage, 
yield, and return per acre perform, 1914-15. 
District. 
Number 
of farms. 
Acres in beets. 
Yield per acre. 
Cash return per 
acre. 
Esti- 
mated. 
Factory. 
Esti- 
mated. 
Factory. 
Esti- 
mated. 
Factory. 
79 
58 
36 
18.49 
14.36 
20.40 
18.31 
14.70 
20.7 
14.85 
14.96 
13.62 
14.80 
13.64 
12.02 
69.82 
69.40 
69.47 
68.66 
70.34 
Idaho Falls 
61.40 
a See Department Bulletin No. 529, "The Validity of the Survey Method of Research." 
In the Garland district the average estimated acreage per farm 
was 1.06 acres greater than the factory record. There was not much 
difference in the average yield for the same area, and the cash returns 
