A Study of Colorado Wheat 
59 
SEASON OF 1913 VERY FAVORABLE—WHAT OUR EXPERIMENTS 
SHOWED US 
The season of 1913 was very favorable throughout the whole 
period of growth and ripening. The early spring was quite wet and 
our planting was late. The period from planting till harvest was loi 
days. There was very little rust, so little that we shall consider its 
effects negligible. A comparison of the nitrogen found in the three 
samples of each variety grown on the check plots shows that there is 
a greater variation in them than can be attributed to errors in the deter¬ 
minations; further, that, corresponding to the differences in the check 
plots, the samples of Defiance and Red Fife are higher on Section 1800 
than on the other two sections. In the. case of the Kubanka, there is 
but little difference, especially in samples grown without the applica¬ 
tion of nitrogen. It shows, further, that there is an increase of nitro¬ 
gen in those samples grown with the application of this element over 
that found in the! check plots for each variety of wheat and in each 
section. This increase equals from one to six-tenths of one percent. 
This difference is consistent, too, throughout the statement for the 
wet, dry and true-gluten. It has frequently been shown that the nitro¬ 
gen content of wheat can'be increased by the application of sodic nitrate 
and also by ammoniacal s<alts. This statement is also made in regard 
to other nitrogenous manures, sheep manure for instance. This state¬ 
ment, according to our observation, needs the following modification: 
Provided the nitrogen is converted into nitric-nitrogen with sufficient 
rapidity. We have used only one form of nitrogen in our experiments 
at Fort Collins, sodic nitrate, but we have one set of samples grown 
fwith farmyard manure, which gives different results. Our samples 
grown with the application of nitrogen, in the form! of sodic nitrate, 
regularly show an increase in the nitrogen content of the crops. Crops 
grown with farmyard manure, show a decided advantage in yield, 
both of straw and grain, but only a very small increase in the nitrogen 
content. The maximum difference in any one of the three pairs of sam¬ 
ples was 0.20 percent nitrogen; the other two pairs show a difference of 
o.oi and 0.05 percent respectively. The greatest difference, 0.20 of one 
percent, may be due to other causes than the manure, but as the record 
stands, this difference would be attributed to its effects. These samples 
were obtained for another purpose and will be given in connection with 
the subject that they are more specifically intended to illustrate. I have 
not used ammoniacal salts on any plots, and can only state, on the au¬ 
thority of others, that their effects are the same as those of nitrogen 
in the form of sodic nitrate. 
j 
Two other questions present themselves for consideration in this 
connection, namely, are there any effects produced by the other plant 
