New York AGRICULTURAL EXPERIMENT STATION. 455 
(5) Hffect of stable manure upon money value of crop.— The 
use of 20 tons of stable manure per acre increased the money 
value of the crops $12 to $33.03, with an average increase of 
. $21.80. In no instance was the increase of crop equal to the cost 
of manure applied. In this connection, however, ought to be con- 
sidered the fact that the plant-food in the stable manure would not 
be completely used in one season. If its effects were continued 
through two or three seasons, there would be some profit from its 
use. 
III. COMPARISON OF COMMERCIAL FERTILIZERS AND STABLE 
MANURE IN THE GROWING OF SUGAR BEETS. 
Tt will be a matter of interest to consider briefly side by side 
some of the average results obtained in growing beets with the 
use of commercial fertilizers and stable manure. for this pur- 
pose we will use only the results obtained with 500 pounds of 
commercial fertilizer. 
AMOUNTS OF PLANT-FOOD APPLIED IN THE COMMERCIAL FERTILIZER AND IN THE 
STABLE MANURE USED. 

In 200 tons 
stable ma- 
nure. 
» In 500 pounds 
commercial 
fertilizer. 
a IE EE Meee Sh CCN RMLs otp 9 ow aePE RN Wiens one G 21 
MEL COG scala i x “ole oie bik aie wis ale Pa bi eenle «66 o's 36 
REM EEIEEE Se aTrra  niale ted sain hielece te ws wate Eldierme ee eis 38 200 
mot 
oo 9 
eka Ne 
It will be seen that the stable manure applied to one acre con- 
tained about ten times as much nitrogen, three times as much 
phosphoric acid, and five times as much potash, as did the 500 
pounds of commercial fertilizer used. It is safe to assume that 
one-third of the stable manure was available for the crop’s use, 
which would furnish the crop three times as much nitrogen, the 
same amount of phosphoric acid, and twice as much potash as was 
furnished by 500 pounds of the commercial fertilizer. 
