2 8 Colorado Experiment Station 
TOTAL AND PROTEID 
NITROGEN IN GROWING WHEAT 
PLANTS, 1915 
Total 
Proteid 
Date 
Fertilizer 
Stems 
Leaves 
Heads 
Stems Leaves 
Heads 
13 July 
Nitrogen, 120 pounds . 
.2797 
.8092 
.6324 
.1598 .5838 
.4066 
13 July 
Phosphorus, 60 pounds 
.2050 
.6150 
.5629 
.1270 .3946 
.3614 
13 July 
Potassium, 200 pounds 
.2050 
.5907 
.5803 
.1286 .4170 
.3683 
13 July 
None . 
.1911 
.5837 
.5456 
.1216 .3981 
.3545 
16 July 
Nitrogen, 80 pounds . . 
.2777 
.6463 
.6376 
.1843 .5018 
.4239 
16 July 
Phosphorus, 40 pounds 
.2084 
.4639 
.5872 
.1529 .3892 
.4045 
16 July 
Potassium, 150 pounds 
.2359 
.4934 
.6185 
.1494 .3753 
.4149 
16 July 
None . 
.2102 
.5786 
.5959 
.1490 .4309 
.3593 
20 July 
Nitrogen, 40 pounds . . 
.26id 
.4361 
.5803 
.1891 .3662 
.4274 
20 July 
Phosphiorus, 20 pounds 
.2376 
.4100 
.5699 
.1703 .3475 
.3906 
20 July 
Potassium, 100 pounds 
.1963 
.3179 
.5542 
.1425 .2828 
.3788 
20 July 
None . 
.2120 
.3509 
.5629 
.1430 .2884 
.3732 
23 July 
Nitrogen, 120 pounds . 
.3457 
1.2561 
.7644 
.2220 .1077 
.5386 
23 July 
Phosphorus, 60 pounds 
.2357 
.6915 
.6376 
.1668 .0312 
.4392 
23 July 
Potassium, 200 pounds 
.1998 
.6880 
.5924 
.1390 .0660 
.4378 
23 July 
None . 
.2324 
.6915 
.6116 
.1613 .5052* 
.4309 
27 July 
Nitrogen, 80 pounds . . 
.2884 
.4621 
.6533 
.1824 ..3461 
.6533 
27 July 
Phosphorus, 40 pounds 
.1964 
.2187 
.5212 
.1432 .1703 
.5212 
27 July 
Potassium, 150 pounds 
.2187 
.2988 
.5872 
.1613 .2168 
.5838 
27 July 
None . 
.1928 
.2797 
.5247 
.1390 .2234 
.5247 
30 July 
Nitrogen, 40 pounds . . 
.2654 
1.0260 
.7297 
.1842 .5699 
.5734 
30 July 
Phosphorus, 20 pounds 
.2204 
.7679 
.6585 
.1703 .6116 
.4934 
30 July 
Potassium, 100 pounds 
.2015 
.5942 
.6550 
.1369 .1890 
.5365 
30 July 
None . 
.2102 
.7401 
.6324 
.1543 .2954 
.4830 
6 Aug. 
Nitrogen, 12p pounds 
.4169 
.9221 
.2967 
.7794 
6 Aug. 
Phosphorus, 60 pounds 
.2289 
.6759 
.1598 
Lost 
6 Aug. 
Potassium, 200 pounds 
.2154 
.7210 
.1369 
.5817 
6 Aug. 
None . 
.2671 
.6533 
.1855 
Lost 
9 Aug. 
Nitrogen, 80 pounds . . 
.4500 
.9069 
.2898 
.7401 
9 Aug. 
Phosphorus, 40 pounds 
.2498 
.6741 
.1876 
.5595 
9 Aug. 
Potassium, 150 pounds 
.2726 
.7747 
.2030 
.6568 
9 Aug. 
None . 
.2550 
.7019 
.1890 
.5699 
12 Aug. 
Nitrogen, 40 ptounds . . 
.3787 
.8895 
.2780 
.8023 
12 Aug. 
Phosphorus, 20 pounds 
.3110 
.7158 
.2255 
.6950 
12 Aug. 
Potassium, 100 pounds 
.2272 
.8286 
.1703 
.7815 
12 Aug. 
None . 
.2726 
.8040 
.2050 
.6915 
* This result appears abnormal. 
The whole set was 
repeated with 
the same results. 
The table, when compared 
with a 
similar statement obtained 
for the crop of 1913, indicates that the amounts of total and pro- 
teid nitrogen are smaller throughout the season of 1915 than in 
1913; the same conclusion is indicated for the dry matter, but when 
one considers plants of the same development we find that the dif¬ 
ference in dry matter is not very pronounced, while the percentage 
of nitrogen is decidedly lower and holds, in the main, for the whole 
season. In both seasons we see that the application of nitrogen in¬ 
creased these forms of nitrogen in the plant, and these differences 
