GROWING SUGAK BEETS IK COLORADO. 
Table XI. — Spike-tooth harrowing data for three Colorado districts. 
23 
Year. 
Num- 
ber 
of 
farms. 
Acres 
har- 
rowed 
per 
farm. 
Num- 
ber 
times 
har- 
rowed. 
Crew. 
Hours per acre. 
Total 
cost 
per 
acre. 
District. 
Man. 
Horse. 
Man. 
Horse. 
1914-15 
1915 
1914-15 
109 
66 
191 
22.93 
36.8 
25.9 
3.52 
3.7 
2.76 
1 
1 
1 
3.54 
3.7 
3.57 
2.74 
2.3 
1.8 
9.7 
8.4 
6.17 
$1.46 
1.36 
1.02 
For all districts nearly all harrowing was done either by one man 
and four horses or one man and three horses. In the Rocky Ford 
district 58 per cent of the growers reporting on this operation used a 
Fig. 8. — Harrowing with the spike tooth is one of the common operations in fitting theland for sugar beets. 
1-4 crew. At Fort Morgan the percentage for this crew was 71, 
while in the Greeley district it was 56. The 1-3 crew was used by 
37 per cent at Rocky Ford, 30 per cent at Fort Morgan, and 39 per 
cent at Greeley. There were a few crews smaller and a few larger 
than these two. The Fort Morgan group did more harrowing than 
the Rocky Ford group and the average cost per acre was 10 cents 
lower in the former in 1915 than in the latter in 1914 and 1915. 
Greeley farmers had the lowest cost per acre for spike-tooth harrowing, 
but went over. the beet land fewer times than did the men of either 
of the other areas. A day's work with the spike-tooth harrow with 
an average crew varied from 12.8 to 15 acres. 
