CEOP KOTATION AND CULTURAL METHODS AT AKRON, COLO. 3 
precipitation has exceeded this eight times and has been below it 
eight times in the 16 years that records have been kept. The 
heaviest precipitation of any one year was 25 inches, in 1915. The 
lowest precipitation recorded for any one year was 13.44 inches, in 
1921. 
A general summing up of the cropping results shows conclusively 
that the greatest single factor in crop production is the amount of 
annual precipitation. The factor of greatest secondary importance 
appears to be the distribution of the precipitation, as the records 
available show that when the quantity approaches a critical point 
its distribution becomes the more important. Table 2 illustrates 
this point. 
Table 2. — Annual precipitation and average yields of the principal crops at the 
Akron Field Station in 1912, 1913, 1920, and 1921 
Precipi- 
tation 
Acre yields of the several crops 
Year 
Winter 
wheat 
Spring 
wheat 
Oats 
Barley 
Corn 
Grain 
Total 
1912 
Inches 
20.73 
16.55 
20.85 
13.44 
Bushels 
33.8 
7.4 
14.2 
12.3 
Bushels 
19.7 
3.9 
18.7 
2.1 
Bushels 
42.3 
6.6 
44.2 
13.1 
Bushels 
30.8 
6.3 
32.1 
14.1 
Bushels 
30.9 
3.9 
35.6 
6.3 
Pounds i 
4,689 
1913 
1,611 
1920. 
4,711 
1921 
1,190 
1 Total yield of grain and stover. 
The years 1912 (20.73 inches) and 1920 (20.85 inches) had almost 
the same precipitation and produced very nearly the same acre yields 
of spring wheat, oats, barley, and corn. Winter wheat was an excep- 
tion; it yielded much more heavily in 1912 than in 1920. In the 
years following these two a precipitation of 13.44 inches in 1921 
produced decidedly better yields of most crops than a precipitation 
of 16.55 inches in 1913. 
Table 3 furnishes data dealing with the seasonal precipitation and 
crop yields. The seasonal precipitation as referred to in this bulletin 
is the precipitation that occurs during the six-month period from 
April to September, inclusive. 
Table 3. — Seasonal precipitation and average yields of the principal crops at the 
Akron Field Station in 1911, 1916, and 1919 
Precipi- 
tin 
Acre yields of the several crops 
Year 
Winter 
wheat 
Spring 
wheat 
Oats 
Barley 
Corn 
Grain 
Total 
1911 
Inches 
10.30 
10.77 
10.67 
Bushels 
4.1 
13.7 
15.0 
Bushels 
3.7 
7.1 
6.3 
Bushels 
4.0 
11.3 
16.9 
Bushels 
6.1 
11.0 
18.3 
Bushels 
3.2 
1.1 
4.5 
Pounds » 
1,367 
930 
1916- _ 
1919- 
1,620 
Total weight of grain and stover, 
