20 
BULLETIN 115. 
(Table 17, Continued.) 
On Field E | 
September 26 U-- 
1.47 
23.5 
20.7 
13.8 
79.1 
October 6 _ 
1.40 
22.4 
21.2 
15.3 
sl. 5 
October 10__ 
1.53 
24.5 
19.6 
15.6 
79.7 
October 17_ 
1.45 
23.2 
22.8 
14.4 
80.4 
October 26_ 
1.25 
20.0 
21.7 
16.2 
87.3 
November 3 __ 
1.67 
26.7 
25.3 
15.1 
77.6 
Average__—. 
1.46 
23.4 
21.9 
15.1 
80.9 
Yield of whole plat when harvested 19.8 tons. Spacing 10.5 inches. 
Nov. 7. Sugar 15.1% Purity 87.3. 
Table 18. 
SAMPLES FROM FIELD F, PLAT 6, 1904 
Date of Sampling 
Mean Weight of 
Topped Beets in 
Ounces | Pounds 
Est.Yield 
Per Acre 
•Tons 
Sugar in 
Beet 
Per Cent 
Purity 
Coeffi. 
September 22 ---. 
October 12--- 
October 15.... 
October 20*—-.—-- 
October 22-...-.. 
Average.—... 
16.2 
18.1 
16.0 
16.6 
16.8 
16.7 
1.01 
1.13 
1.00 
1.04 
1.05 
1.05 
17.6 
18.8 
16.7 
18.2 
17.8 
15.4 
16.2 
16.7 
15.8 
16.4 
16.1 
83.5 
88.4 
87.9 
87.6 
89.1 
87.3 
* Average of 12 samples. 
Yield of whole plot when harvested 16.9 tons. _. ^ 
Average space between beets 8.9 inches. 
The data secured offers some interesting evidence as to the prog¬ 
ress of ripening in the sugar beet, the most striking being the com¬ 
paratively slight increase in sugar content and purity, or yield, after 
the last week in September. 
The data for 1902 is especially interesting, showing the effects of 
the early freeze of September 12 of that year, which destroyed the 
leaves. This was followed in a week by a heavy rain amounting to 
six inches, causing the beets to put forth an entirely new set of leaves. 
The effect of the renewed growth is plainly seen in the great decrease 
of sugar content and purity reaching the minimum twenty days after 
the rain on October 10. 
PRACTICAL SUGGESTIONS AS TO THE USE OF FERTILIZERS ON 
SUGAR BEETS IN COLORADO 
The Kind to Use.— Nitrogen is the only element which has proven 
of practical value giving decided profit over the cost of application. 
Its use in the form of nitrate of soda with potash and phosphoric 
acid together in “complete” fertilizers, has not been as effective in 
increasing the yield, as nitrate used alone. On the contrary there are 
decided indications that the effect of the nitrate has been largely 
neutralized when so used, although the quality of the beet has been 
good. 
