A Study of Colorado Wheat 
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Our experiments yielded no results that we could interpret as 
showing conclusively that this amount of water made any difference in 
the yield, weight per bushel, or composition of the grain. There were 
differences in the composition of the grain from the different plots, 
but they were small and irregular, so that we attributed the differences 
observed to the differences in the plots themselves and not to the dif¬ 
ferences in the amount of water applied. 
I learned, very fortunately, that a systematic study of the effects 
of the fertility of the soil upon the duty of water and at the same time 
the effects of different amounts of water upon the am.ount of grain and 
dry matter produced, was being made at Boise, Idaho, by the TJ- S. 
Department of Agriculture, Irrigation Investigations. I further learn¬ 
ed that they were not studying the effects of these conditions upon the 
composition of the grain. Mr. Don H. Bark, the irrigation engineer 
in charge, was kind enough! to furnish me with samples of the grain 
produced, together with detailed cultural notes. The samples repre¬ 
sent two years work and constitute most excellent material illustrative 
of this subject, especially the samples of the second year, which were 
grown wholly under Mr. Bark’s supervision. 
The samples representing the first year’s work were produced un¬ 
der a co-operative system. The variety grown in 1913, the first year, 
was Dicklow spring-wheat. There was no perceptible difference in 
the physical properties of these kernels. They were all plump, but 
many of them were small or only medium in size and the weight per 
bushel was generally less than 60 pounds; some samples were as low 
as 52 pounds- The time from planting till harvest was in most cases 
128 days. 
