PLANT NUTRIENTS RE- 
QUIRED BY THE CORN 
CROP 
For eontinued big crops of corn, we 
must replace at least part of the plant | 
nutrients removed by the crop. Fertility 
reserves in the soil are slowly being liber- 
ated and can supply part of the needs of 
the growing crop, but some replacements 
are needed to maintain good soils in a high 
state of fertility. The following table em- 
phasizes our tremendous assignment in 
maintaining fertility balances. Amounts 
of nitrogen, phosphorus (phosphoric acid 
P.O;) and potassium (potash KO) needed 
by the crop have been calculated from 
many analyses. 
Requirements to Produce a 100 Bushel 
Corn Crop 
Pounds Required 
Nitrogen Phosphoric Potash 
CROP UNITS Acid P:0; K:O 
100 bu. grain 95 38 25 
3 tons stover 57 18 82 
TOTAL 4 Wy 56 107 
For Efficient Growth— 
ib Funk’s G-Hybrids 
