
EFFECT OF NITROGENOUS FERTILIZERS. 127 
was increased to 75 pounds per acre, there was practically no in- 
crease in the yield. In this respect'the results differ somewhat 
from the results of similar experiments with the grasses, dis- 
cussed on preceding pages; for in these experiments there was 
observed considerable further increase in yield after the nitro- 
gen in the fertiliizers exceeded 50 pounds per acre. This would 
seem to indicate that, for increasing the weight of the yield, 
nitrogen is not so effective upon corn as it is upon the grasses. 
But while the yield of corn from the use of 75 pounds of 
nitrogen per acre was little or no greater than that from the 
use of 50 pounds, the feeding value of the crop from the use 
of 75 pounds was much higher than that of the crop from the 
use of 50 pounds. This may be seen by a comparison of the 
figures in Table 7 herewith. | 
From this table it appears that although the difference be- 
tween the yield of grain and stover from the use of 75 pounds 
of nitrogen per acre and the yield from the use of 50 pounds 
per acre is relatively quite small, the difference between the 
yield of protein in the crops from the use of 75 pounds of 
nitrogen per acre and that in the crop from the use of 50 
pounds per acre is considerable. 
The valuation of the increase in the yields, with corn at 
60 cents per bushel, and stover at $6 a ton, shows very clearly 
supplying different quantities of nitrogen, as compared with yields by 
and the corresponding profits. 










INCREASE OVER | VALUE OF INCREASE. 
YIELD OF DRY MATTER YIELD, FROM_ | (Corn, 60cents bush., 
| me MINERAL PLOTS. | Stover, $6.00 ton.) Total 
yield of blot 
protein. No. 
Grain—11.1 | Stover—r4.3 Grain. |JStover.| Total. Net.* 
p. c. Water. | p.c. Water. 
‘Ibs. Ibs. | Ibs. | Ibs. $ Sei © Ibs, 
O, 00, 
1,197 POA TERM es ere laient he vis sorrento ek cle 233 con 
8 or 6a, ; 
1,778 PES ESTO V9 READ Desire pas Piast: 5708 Baier ne 289 bieee 
2,399 2,507 621 318 Ot bi 4.76 395 ; nee 13 
; | 8, 
2,937 2,670 H,15907) 2481 | “13.86 1.6.96 | 485 11, 14 
ood |) 2,707 ,|1,226 7 578) 14.87) 4.52) 554 ee a 
Zee ; 
* Total value less cost of fertilizer. 
