44 The: Colorado Experiment Station 
account and also because they were taken from different localities. 
Eight of the samples were grown in 1910 and two of them in 1911. 
It is a matter for general comment among the factory people 
that the beets grown in 1911 have worked much better than those of 
the past few years. I have had occasion to note that the whole de¬ 
velopment of the beet, especially in some sections, was entirely differ¬ 
ent from the usual development heretofore observed in these sections. 
I do not know the cause of this. It is difficult to believe it to be due 
to the water supply because it holds true that the development of the 
beets was very different in 1911 from that of previous years, for sec¬ 
tions in which they had an abundance of water and also in some 
where there was a great scarcity of water. 
The samples of this class have been taken from a variety of 
soils. Two of them were grown on virgin soil, sod land broken in 
the spring and planted shortly afterward to this crop. The water 
supply was very moderate, and while I do not know the rainfall and 
temperatures that they had during the season, the former may be 
safely assumed to be small and the latter high, as the locality was in 
the extreme eastern portion of the state and the land was up on the 
prairie far away from any flowing water. These are samples XI 
and XII. This field was harvested October 12-15 and averaged as 
delivered to the factory, 13.8 percent sugar, the separate loads 
ranged from 12.2 to 16.0 percent. The variety of the beets was not 
learned, but was probably a Kleinwanzlebener variety. Samples 
XIII and XIV were grown on the College Experiment Farm in 
1911. No. XIII is Wohanka, richest in sugar, WZR—and No. 
XIV is Wohanka heaviest fielder, WER. Sample No. XV, a Klein¬ 
wanzlebener grown at Rocky Ford. Samples No. XVI and XVII, 
variety known only by number, College Experiment Farm. Sam¬ 
ples No. XVIII, XIX and XX, Original Kleinwanzlebener, grown 
at Rocky Ford. 
As we have a number of samples from this locality, I will give 
the rainfall for the growing season: April 2.57, May 2.14, June 
0.33, July 2.99, August 1.52, September 0.03 inches. I have not 
the times and dates when each of the fields represented by my sam¬ 
ples was irrigated but of some I have a complete statement of the 
treatment received. The importance of rainfall, i. e., the part 
played by rain water in our crop raising, depends upon the supply 
of irrigating water at our command throughout the season. In 
some sections this supply is always good, in others it is not. It 
would be too much of a digression to go into the question of the 
effects of water supply or irrigation at various periods of the grow¬ 
ing season at this time. The subject has been discussed in several 
of the earlier bulletins of this Station. The observations recorded 
pertain*to the crop and sugar content and not to the composition of 
