34 
Colorado Experiment Station 
DRY MATTER IN WHEAT PLANTS, STEMS AND HEADS SEPARATE. 
Ratio of 
Dry Dry green 
matter matterstems to 
Date 
Section 
Variety 
Fertilizer per acre 
stems 
heads 
heads 
1913 
28 July 
1700 
Defiance 
120 
pounds 
nitrogen 
42.30 
46.54 
1.5 
28 July 
1700 
Defiance 
60 
pounds 
phosphorus 
48.03 
52.30 
1.2 
28 July 
. 1700 
Defiance 
200 
pounds 
potassium 
45.97 
49.80 
1.3 
28 July 
1700 
Defiance 
None 
43.65 
48.40 
1.3 
31 July 
1700 
Red Fife 
120 
pounds 
nitrogen 
44.77 
54.74 
1.3 
31 July 
1700 
Red Fife 
60 
pounds 
phosphorus 
49.98 
56.80 
1.2 
31 July 
1700 
Red Fife 
200 
pounds 
potassium 
43.84 
60.06 
1.2 
31 July 
1700 
Red Fife 
None 
45.45 
55.88 
1.3 
29 July 
1800 
Defiance 
80 
pounds 
nitrogen 
42.05 
44.87 
1.9 
29 July 
1800 
Defiance 
40 
pounds 
phosphorus 
53.97 
52.52 
1.3 
29 July 
1800 
Defiance 
150 
pounds 
potassium 
47.40 
49.11 
1.5 
29 July 
1800 
Defiance 
None 
43.89 
47.78 
1.5 
29 July 
1800 
Kubanka 
80 
pounds 
nitrogen 
51.81 
53.37 
1.3 
29 July 
1800 
Kubanka 
40 
pounds 
phosphorus 
47.28 
54.80 
1.2 
29 July 
1800 
Kubanka 
150 
pounds 
potassium 
57.96 
56.77 
1.3 
29 July 
1800 
Kubanka 
None 
51.69 
58.12 
1.3 
30 July 
1900 
Defiance 
40 
pounds 
nitrogen 
49.45 
47.42 
1.7 
30 July 
1900 
Defiance 
20 
pounds 
phosphorus 
53.53 
50.83 
1.3 
30 July 
1900 
Defiance 
100 
pounds 
potassium 
47.26 
47.92 
1.4 
30 July 
1900 
Defiance 
None 
51.93 
49.58 
1.3 
30 July 
1900 
Red Fife 
40 
pounds 
nitrogen 
51.99 
54.52 
1.8 
30 July 
1900 
Red Fife 
20 
pounds 
phosphorus 
51.76 
54.80 
1.6 
30 July 
1900 
Red Fife 
100 
pounds 
potassium 
48.23 
56.90 
30 July 
1900 
Red Fife 
None 
49.47 
55.51 
V ’ 
There is no question blit that the tendency of the nitrate is to 
lessen the percentage of dry-matter in the plant. This is quite evi¬ 
dent in the earlier samples and it is still true in the later ones 
though less pronounced and regular. 
The samples of Defiance given in this table all seem to be re¬ 
markably low in dry matter. These are, however, the results ob¬ 
tained and I have no explanation to 1 offer unless it be due to imma¬ 
turity of the variety which requires about ten days longer for its 
normal development than the Red Fife. The preceding samples 
were dried in a large steam drier and then permitted to stand ex¬ 
posed to the atmosphere till they had absorbed as much moisture 
as they would under our atmospheric conditions before being 
weighed. 
A few samples taken at random were used to ascertain how 
much moisture such samples contained. The average for seven 
samples used was 7.482 percent (Max. 8.652, Min. 5.566 percent). 
The samples grown with the application of nitrate contained higher 
percentages of moisture than the others, but the few samples tested 
do not justify the extension of this observation to all samples as a 
general rule. 
