Deterioration Sugar Beets Due to Nitrates 57 
common to all of the samples and indicate their independence of 
these factors. It is for the purpose of avoiding misapprehensions 
that 1 have given, at the risk of being prolix, so many details. On 
the other hand, the number of samples and the various locations 
serve to give us a correct idea of the character of the beets that we 
are justified in expecting under favorable conditions and they show 
that these favoi able conditions are not confined to the northern sec¬ 
tion of the state and the higher altitudes. While the sample of Fort 
Collins beets grown in 1910 with 18.3 percent sugar was undoubt¬ 
edly an excellent beet as are also the College samples grown in 1911, 
the}' aie no bettei beets than the samples grown on virgin soil in the 
extreme eastern portion of the Arkansas Valley, but still in Colo¬ 
rado, in fact, except in the percentage of sugar shown, the Arkansas 
\ alley sample is somewhat the better, especially in regard to the 
amount of injurious nitrogenous substances present. Compared 
with the College samples of 1910 the Arkansas Valley sample is 
decidedly the superior one. The reader who is not familiar with 
the conditions in this section of the Arkansas Valley cannot appre¬ 
ciate the foice of these facts. In this case we have samples of beets 
grown under very different conditions with the advantage, according 
to our universally accepted criteria, cultivation, supply of moisture, 
fertility of the soil, absence of hot drying winds, absence of fungus 
troubles, etc., in favor of the less advantageous returns in both crop 
and quality; to be specific the College crop in 1910 was 7.0 tons per 
acre and that on freshly broken sod land in the Arkansas Valley was 
14 tons. The maximum sugar found in a field sample of the college 
beets was 13.3 percent, the average of the Arkansas Valley beets in 
load lots as delivered to the factory, was 13*8? with a maximum of 
16.0 percent. The College samples show 5.7 and 6.4 parts of in¬ 
jurious nitrogenous substances to each 100 of sugar, while the 
Arkansas Valley sample shows 3-7 parts. Even two of the samples 
chosen as standards for our purposes, the Michigan and Colorado 
samples, show 0.51 and 0.63 parts injurious nitrogen. As we have 
given some College beets grown in 1911, it is perhaps of interest to 
state that the section of the Arkansas Valley under consideration 
produced in 1911 the best beets of any section of the state so far as 
my information goes. The tonnage was moderate but the' sugar 
content averaged better than 17*5 percent and the beets worked 
exceptionally easily in the factory. The new lands in the Arkansas 
Valley produce now, as the lands about Rocky Ford did prior to 
1905, excellent beets. If we consider in this connection the addi¬ 
tional analyses XV, XVIII, XIX and XX, we find further sug¬ 
gestive facts. If we consider only the two factors, percentage of 
sugar and injurious nitrogenous compounds, these facts will become 
sufficiently evident. In analysis XV we have 14.4 percent sugar 
