v—Virgin soil. 
The Relation of Nitrogen. 163 
TABLE III. 
Content of Nitrogen, Phosphorus and Acre Yield. 4 to 5% Organic Matter. 
| 
Sample | Bushels of ro cone Lbs. per | Per Cent. Lbs. per | Per Cent. Lbs. per 
No. Corn M gs Acre Nit. Acre Phos. Acre 
atter 
3 40 4.63 92,600 .140 2,800 | 135 2,700 
OS he sont cen 4.03 80, 600 077 1,540 | 095 1,906 
12 20 4.73 94, 600 108 2160 || 113 2,268 
25x 35 4.53 90, 600 152 3,050 116 2,322 
40x 40 4.46 89, 200 .140 2,800 243 4,860 
45x 30 4.08 81, 600 .098 1,860 | 078 1,586 
46x 50 4.89 97,800 124 2,485 | 113 2,278 
47x 30 4.70 94,000 150 3,000 | 086 1,728 
(iB) 0 Wi Ge eee 4.53 90, 690 098 1,960 107 2,140 
54 40 4.10 82, 000 097 1,942 103 2,060 
35.5 89, 360 2,359 2,385 ave. 
x—Acid soil. 
s—Subsoil. 
TABLE IV. 
Content of Nitrogen, Phosphorus and Acre Yield. 5 to 6% Organic Matter. 
Sample Bushels of Ber Conk : Lbs. per Per Cent. Lbs. per Per Cent. Lbs. per 
No. Corn Ma me Acre Nit. Acre Phos. Acre 
atter 
4 35 5.20 104, 000 161 3, 220 221 4,428 
5x 35 5.45 109, 000 . 100 2,000 .099 2,000 
IAG | Gece arte 5.08 101, 600 .186 3,720 . 108 2,160 
24 40 5.94 118, 800 141 2,834 121 2,430 
36x 0 5.71 114, 200 .098 1,960 .129 2,592 
41x 50 5.75 115, 000 .122 2,450 . 162 3, 240 
49 60 5.85 117, 000 175 3,450 .189 3, 780 
50 30 (45) 115, 000 .129 2,580 421 4,212 
DOMME even Aseces Dis 5.01 100, 200 119 2,380 .087 1, 755 
55 45 5.90 118, 000 . 144 2,880 119 2,380 
42.14 111, 280 2,748 2,898 ave. 
x—Acid soil. 
