28 
Colorado Experiment Station 
DEFIANCE SECTION 1800, SEASON OF 1915 
Fertilizer 
Bushels 
Crude protein 
Wet gluten 
Dry gluten 
per acre 
percent 
percent 
percent 
Nitrogen 
10.83 
10.72 
27.17 
10.71 
Phosphorus 
22.50 
8.76 
18.50 
7.47 
Potassium 
25.33 
8.44 
20.00 
7.99 
None 
19.50 
9.00 
18.70 
7.37 
These two crops were grown with the same amount of water. 
In 1913 we had 7 inches of rainfall during the life of the wheat 
and we applied 12 inches of water; in 1915 we applied 6 inches 
of water and had 13 inches of rainfall. In 1913 we had very little, 
we may say no rust; in 1915 our wheat was very badly rusted. 
The yield for the Defiance in 1915 was not quite one-half of that 
of 1913 and the quality was no good at all. 
I have stated one of the objections to the Defiance to be its 
late ripening. A comparison of the above data with similar ones 
for the Red Fife may be instructive. 
RED FIFE, SECTION 1800, SEASON OF 1913 
Fertilizer 
Bushels 
Crude protein 
Wet gluten 
Dry gluten 
per acre 
percent 
percent 
percent 
Nitrogen 
39.91 
14.91 
32.20 
12.84 
Phosphorus 
34.90 
13.24 
27.00 
11.04 
Potassium 
33.90 
13.81 
27.20 
11.07 
None 
33.16 
14.43 
28.83 
11.55 
RED FIFE, SECTION 1800, SEASON OF 1915 
Fertilizer 
Bushels 
Crude protein 
Wet gluten 
Dry gluten 
per acre 
percent 
percent 
percent 
Nitrogen 
23.66 
10.07 
24.70 
9.28 
Phosphorus 
33.00 
8.01 
18.00 
7.27 
Potassium 
33.16 
8.82 
22.17 
8.99 
None 
33.66 
8.38 
19.40 
7.73 
This variety matures about 10 days earlier than the Defiance. 
We find that the 1915 crop is only a little less in volume than 
that of 1913 but the quality is extremely poor, just about the same 
as that of the Defiance. The Kubanka showed the same effects 
as the’Red Fife, but in a much less degree in regard to the wet 
and dry gluten. We had two bad conditions in the season of 1915. 
The plants were kept wet most of the time by a succession of 
light rains and by heavy dews, and rust developed very badly. 
Of course the rust would not have developed except for the mois¬ 
ture, but how bad things would have been had the rust not devel¬ 
oped we cannot say. Judging, however, from results obtained 
through our observation of the movement of nitrogen in the plant, 
the more injurious condition was the rust. 
The differences in the composition of the crops of 1913 and 
1915 are no greater than the differences in the milling results. 
The crop of 1913 yielded much more flour and less bran. The 
Defiance yielded about 72.0 percent flour and 21 to 27 percent 
