COTTON 
123 
PARTS AND DEMANDS FOR YIELD OF AVERAGE 
ACRE 
Quantity and part 
Nitro. 
Phos. 
Potas. 
.65 
.19 
.87 
6.08 
2.45 
5.87 
1.44 
.81 
2.01 
11.70 
4.33 
6.57 
6.51 
2.47 
4.64 
12.96 
5.26 
4.84 
Total 
39.34 
15.51 
24.80 
Here we find the average cotton crop of 1 90 pounds 
of lint draws from the soil 40 pounds of nitrogen, 
16 pounds of phosphorus, and 25 pounds of potas- 
sium. But stems, roots, leaves, and bolls are re- 
turned to the soil, and are therefore not really taken 
from the land at all. Lint and seed are taken 
away, and are removed from the land. Now what 
draft is made on the soil ? Let us see, and at the same 
time compare with corn and wheat on the basis of 
the average yield of each crop per acre. 
We have the following facts: 
Crop 
Nitro. 
Phos. 
Potas. 
Totals 
Cotton 
190 lbs. lint 
.65 
.19 
.87 
414 " seed 
12.92 
5.26 
4.84 
Total 
13.57 
5.45 
5.71 
24.73 
Corn 
29.4 bus. grain 
32.14 
12.36 
7.06 
4000 lbs. stover 
41.60 
11.60 
56.00 
Total 
73.74 
23.96 
63.06 
160.71 
Wheat 
13.95 bus. grain 
19.75 
7.44 
5.1 
2300 lbs. straw 
13.57 
2.76 
11.73 
Total 
33.32 
10.20 
16.83 
60.35 
