32 
The Colorado Experiment Station 
number of yellow-berries, but imparted to the grains grown with 
its application a fullness of form and a paleness or deadness of 
color that are very marked, together with the appearance of meali¬ 
ness or opacity. 
We see that, in every case, the application of nitrogen which 
was in the form of sodic nitrate, greatly reduced the amount of 
yellow-berry, in some cases even preventing it altogether. 
To my mind the two samples representing actual field condi¬ 
tions in another portion of the state are more interesting than any 
of my experiments, for in the one we have the natural,, if I may 
use the term, development of nitrates in the soil, and in the other 
we have the ordinary cultural conditions obtaining on a farm well 
kept by a thrifty owner. In the one we have seventy-five percent 
of the berries translucent or entirely free from yellow-berry, in the 
other we have none entirely free, but nearly all badly affected. 
These grains are so different that the manager of the local mill 
stated that they spoke of such samples as constituting different 
varieties. In fact, this manager himself spoke of them as distinct 
varieties, and this too, in spite of the fact that he knew that the 
same lot of seed, Turkey Red, had been distributed to these parties. 
These facts pertaining to the effects of the nitrate are entirely 
consonant with observations already on record. H. von Feilitzen, 
(Abs. Expt. Sta. Record, Vol. XVII, p. 24) says: 
“Two years’ experiments on four different kinds of soils show that 
glassy, hard kernels of spring wheat or barley are richer in protein than 
those of 1a mealy consistency. 
“Glassiness or mealiness in the seed produced no effect upon the 
yield and size of the kernel, but apparently exerted a slight effect upon 
the glassiness or mealiness of the grain. The proportion of glassy kernels 
was found to be greater and the protein of the grain was higher, as a rule, 
on moor soil than on soil of mineral origin. The climatic conditions are 
considered as producing a marked effect on the quality of the grain. Ni¬ 
trogenous fertilizers in general, increased the percentage of glassy 
kernels.” 
Also F. Moertlbauer (Abs. Exp. Sta. Record, Vol. XXV. p. 
334) says: 
“Very early applications (of sodic nitrate) on winter wheat decreased 
the flintiness of the kernels, late applications increased it. In every case 
where a part was applied late the hardness wias improved. A top dressing 
when the heads began to form invariably produced a marked increase in 
the flintiness. * * * The protein content varied with the flintiness. 
The correlation was not a close one. Flintiness is not the only condition 
which determines the protein content.” 
These are the most direct and definite statements that I have 
found bearing upon the effect of the available, plant food upon the 
