38 
BULLETIN 726, U. S. DEPARTMENT OF AGRICULTURE. 
of pullers or lifters were used in these districts. One, known as the 
" crotch" or " straddle puller/' has two shafts, with special points 
which pass on either side of the row. The other type is known as the 
"side puller" and has only one shaft with a single point. In both 
cases only one row is pulled at a time (fig. 21). Lifting or pulling 
coincides with the harvesting dates (Table XXI). During the two 
years of this investigation (1914 and 1915) harvesting in the Rocky 
Ford district ran from September 1 to December 15, at Fort Morgan 
from September 20 to November 20, and at Greeley from August 25 
to November 26. Occasionally unfavorable weather occurs during 
the harvest period and this has a tendency to delay or prevent 
harvesting. 
Fig. 21.— Plowing out sugar beets in the Fort Morgan district. On 46 farms the crew for this operation 
consisted of one man and four horses. 
Table XXI. — Lifting data for three Colorado districts. 
District. 
Year. 
Num- 
ber of 
farms. 
Acres 
lilted 
per farm. 
Crew. 
Hours per acre. 
Total 
cost per 
acre. 
Man. 
Horse. 
Man. 
Horse. 
1914-15 
1915 
1914-15 
106 
66 
195 
22.95 
36.7 
25.76 
1 
1 
1 
3.42 
3.00 
3.05 
5.54 
4.09 
5.12 
18.43 
12 10 
15.54 
S2.84 
2.11 
2.68 
There was considerable difference in each area in the number of 
horses used to do the lifting. In the Rocky Ford area on 52 farms 
a crew of one man and three horses did the plowing out; on 46 farms 
one man and four horses; and on 6 farms one man and two horses. 
In the Fort Morgan district the farms reporting were about equally 
