66 INDIAN CORN CULTURE. 
fertilizer was apphed, while combinations of 
potash and nitrogen, or potash alone, gave good 
yields.* 
At the Virginia station phosphoric acid gen- 
erally increased the yield. A full application 
of this cost but one-half as much as the potash 
and one-sixth as much as the nitrogen.y Fur- 
ther, where phosphoric acid was applied there 
was a larger proportion of the corn to fodder 
than in the other yields. In no instance did 
the nitrogen appheation give a gain equal to 
its cost. 
The Rhode Island station, on the basis of 
several experiments, advises the use of about 
45 lbs. nitrogen, 75 lbs. potash and 54 Ibs. phos- 
phoric acid per acre. 
Summary of experiments.—A careful ex- 
amination of the experiments in supplying fer- 
tility to the corn crop conducted by the differ- 
ent agricultural experiment stations shows, 
as might have been expected, much difference 
in the results secured. Wherever used stable 
or barn-yard manure was productive of good 
results. Combinations of nitrogen, potash and 
phosphoric acid gave satisfactory yields in 
* Kentucky agricultural experimentstation. Bulletin No. 
33. 
+ Virginia agricultural experiment station. Bulletin 31, 
August, 1893. 
{Handbook of experiment station work. Washington, 
1893, p. 86. 
