62 
Journal of Agricultural Research voi. xxm, No. 2 
TABLE VI .—Percentage of protein and phosphoric acid and straw from plots to which 
chemicals were applied at three stages of growth 
Chemicals applied. 
Series A. 
Series B. 
Protein 
(NX6.25). 
Phosphoric acid 
(P2O5). 
Protein 
(NX6.25). 
Phosphoric acid 
(P2O5). 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Stage 
1. 
j Stage 
i 2 ‘ 
Stage 
3 - 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Sodium nitrate. 
3 - 27 
3 - 45 
2. 84 
0.18 
0.17 
0.19 
3 - 98 
4. 06 
3 - 74 
0.12 
0.15 
0.17 
Potassium chlorid. 
2. 51 
2. 84 
2. 49 
. 23 
( -24 
• 19 
3 - 45 
3- 26 
3.04 
• 24 
• 25 
• 24 
Calcium nitrate. 
2.91 
3 . 78 
3-09 
-15 
. 20 
• 25 
3 - 99 
4.41 
3.32 
. 16 
. 20 
. 21 
Ammonium pnlphntp 
3. 58 
1. OI 
3- 26 
1 . 
3. 12 
3. 59 
3. 73 
. 12 
• 15 
. 24 
Sodium hydroxid. 
3 - 54 
• 3 * y* 
2. 92 
3-35 
•29 
j . 26 
• 27 
3 - 12 
2. 77 
2.77 
• 2 4 
. 21 
. 20 
Potassium nitrate . 
3- 06 
4. 20 
3 - 5 i 
. 20 
| . 21 
. 21 
3 - 90 
4. 07 
3 - 05 
. 18 
■ 19 
. 20 
Sulphuric acid . 
2. 72 
3- 06 
3- 21 
• 23 
. 26 
• 32 
3 - 34 
2. 64 
3 - OS 
• 25 
. 19 
. 19 
Ammonium chlorid . 
3 - 39 
3- 61 
2. 93 
. 20 
. 20 
. 23 
3- 60 
3 - 59 
3- 26 
. 18 
. 18 
. 20 
Potassium hydroxid . 
2. 72 
2. 51 
2. 66 
• 23 
. 22 
• 23 j 
2.97 
3 - 25 
3 - 25 
. 22 
. 22 
. 21 
Ammonium nitrate . 
2. 92 
3 - 65 
3 - 99 
• 17 
• 19 
• 19 
3 - 53 
4 - 43 
i 3-33 
. 16 
. 20 
. 2t 
Water . 
2. 50 
• 19 
2. 5 i 
• 14 
Control . 
2. 71 
. 21 
2. 63 
. 22 
Sodium chlorid . 
2. 42 
2. 62 
2. 68 
. 21 
. 20 
. 21 
2. 68 
2. 8 S 
2. 86 
■ 23 
. 21 
. 22 
Calcium chlorid . 
2 . 49 
2. or 
2. 48 
• 19 
. 21 
. 21 
3.04 
2. 76 
2. 63 
• 24 
. 18 
. 20 
Hydrochloric acid . 
2. 89 
2.49 
2. 75 
. 21 
. 21 
. 19 
2. 97 
2. 86 
3 - 04 
• 23 
.18 
. 26 
Potassium sulphate . 
2. 63 
2. 83 
2. 49 
. 20 
• 25 
. 26 
2. 63 
2. 64 
2. 86 
. 16 
• 19 
•25 
Magnesium nitrate . 
2. 83 
3.31 
2. 81 
. 16 
• 17 
. 18 
3- 12 
3 - 45 
2. 84 
* 19 
. 16 
• 17 
Magnesium chlorid . 
2. 48 
2. 47 
2. 55 
. 21 
. 22 
. 20 
2. 65 
3-03 
3-32 
. 16 
. 20 
.24 
Nitric acid. 
3. 02 
4 - 55 
3 - 36 
• 15 
. 20 
. 21 
3. 60 
3 - 47 
3 - 25 
• 17 
. 20 
. 21 
Ammonia 
3-03 
. 20 
. 22 
. 18 
• 23 
"Water 
2. 82 
• 24 
• 23 
Control . 
2.83 
. 22 
• 25 
S 
Table VII .—Lack of correlation between nitrogen and phosphoric acid content of wheat 
grown in Arlington on plots to which various chemicals were applied 
Chemicals applied. 
Stage of 
growth. 
Protein 
(NXs- 7 ). 
Phos¬ 
phoric 
acid 
(PaOs). 
Chemicals applied. 
Stage of 
growth. 
Protein 
(NXs- 7 ). 
Phos¬ 
phoric 
acid 
(P2O5). 
Sodium nitrate.... 
2 
Per cent. 
16.4 
Per cent. 
1.02 
Magnesium sulphate 
3 
Per cent. 
n. 3 
Per cent. 
0.98 
Potassium nitrate.. 
z 
17.0 
1.01 
Potassium chlorid.. 
2 
ii- 45 
1.03 
Ammonium chlorid 
1 
17.1 
1.00 
Do. 
3 
10. 9 
1.00 
Ammonium nitrate 
1 
16.4 
1.03 
Calcium chlorid.... 
3 
11. 7 
1.01 
Do. 
2 
16.9 
1. 02 
Potassium sulphate 
1 
11. 2 
1.02 
Table VIII .—Percentage of ash and silica in straw from plots to which chemicals were 
applied at three stages of growth 
Chemicals applied. 
Series A. 
Series B. 
Ash. 
Silica. 
Ash. 
Silica. 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Stage 
1. 
Stage 
2. 
Stage 
3 - 
Sodium nitrate. 
11.0 
11.3 
14. 0 
8.1 
8.0 
10. 8 
11.2 
11.9 
12. 2 
6.1 
7-3 
8.6 
Potassium chlorid. 
13.1 
12. 0 
11. 7 
10. 7 
9. 0 
9 - 3 
12. 2 
12.0 
11. 9 
8.8 
8.8 
8.6 
Calcium nitrate. 
10.0 
11. 8 
12. 8 
5-8 
7-3 
9.0 
11. 0 
11.1 
11. 7 
6. 7 
6. 5 
8.4 
Ammonium sulphate. 
9.42 
9. 60 
II -3 
5 . 5 
5- 6 
8. 0 
11.1 
11. 2 
n- 5 
7. 2 
7.0 
8.3 
Sodium hydroxid. 
12.5 
12.8 
13 - 2 
8.9 
9. 6 
10. 2 
14-3 
12. 5 
12. 8 
10. 5 
8.9 
9-3 
Potassium nitrate. 
11.1 
11. 8 
11. 8 
8.1 
7 - 9 
8.3 
11. 9 
12.3 
11. 9 
8. 1 
7. 2 
8- 5 
Sulphuric acid. 
13-0 
13 - 7 
13 - 6 
9.9 
10. 6 
10. 6 
12. 2 
13 . 3 
11. 2 
9. 0 
10. 0 
7.8 
Ammonium chlorid. 
11. 1 
11. 1 
12. 8 
7-9 
7-8 
9.9 
11. 0 
10. 8 
12. 2 
7 - 5 
7-9 
9.0 
Potassium hydroxid. 
14. 0 
12. 1 
12. 3 
11. 0 
9. 2 
9. 2 
11. 8 
11. 3 
10. 8 
8. 6 
8.3 
7-9 
Ammonium nitrate. 
10. 7 
12. 6 
11. 6 
7-3 
9-3 
8 - 4 
10. 6 | 
10. 7 
13-0 
7 - 3 
7. 2 
9 - 7 
Water. 
12. 7 
9 - 7 
11. 4 
8. 0 
Control. 
12. 1 
9. 0 
12. 0 
8-7 
Sodium chlorid. 
12.3 
11. 4 
12. 6 
9 - 1 
8.6 
! 93 
12. 6 
13 - 7 
11. 9 
9. 2 
10. 3 
8 8 
Calcium chlorid. 
12. 5 
12. 1 
12. 8 
9-4 
9. 2 
10.4 
12. 9 
12. 0 
12. 4 
9 - 7 
9.0 
10.1 
Hydrochloric acid. 
12. 1 
11. 6 
11. 6 
9. 2 
8.9 
8.8 
12. 2 
12. 9 
14-3 
9. 0 
9 - 5 
10. 9 
Potassium sulphate. 
12. 3 
12.3 
13 - 4 
9-3 
9. 2 
10. 3 
13-3 
12. 8 
13 . 5 
9. 2 
9. 8 
10.3 
Magnesium nitrate. 
10. 0 
11. 7 
12. 1 
7.6 
8.5 
9. 0 
11. 9 
12. 8 
13 - 2 
8. 8 
9 - 7 
9.8 
Magnesium chlorid. 
12.8 
12.3 
13. 2 
9.8 
9. 2 
10. 1 
12. 0 
13 - 2 
12.3 
9. 0 
10. 0 
9. 6 
Nitric acid. 
10.3 
10. 9 
10. 8 
7.0 
7-4 
7 - 5 
10. 3 
11. 2 
11. 6 
6. 8 
7 - 9 
8.7 
AmmrvniA 
13. 1 
12. 4 
* 9 - 7 
8.9 
11. 8 
11. 8 
7. 8 
8.3 
Water. 
11. 9 
8.9 
12. 0 
8.7 
Control. 
12. 1 
9. 1 
12. 1 
9. 1 
