44 STORRS AGRICULTURAL EXPERIMENT STATION. 
rations would seem to indicate that corn is not able to utilize 
profitably large amounts of nitrogen from soluble fertilizers 
such as nitrate of soda and sulphate of ammonia. Many expe- 
riments made in past years by this Station have shown that 50 
pounds of nitrogen per acre from fertilizers like those men- 
tioned above is about as much as can profitably be used on corn. 
Better results might very likely come from the use of stable 
manures supplying equally large quantities of nitrogen than 
from the same quantities of nitrogen in the form of nitrate of 
soda or of sulphate of ammonia. The stable manures have a 
value outside of their nitrogen content which is not found in 
the chemical fertilizers. 
Comparison of yields with and without lime.—As pointed out 
above, the yield from section F of plot 12 was less than that 
from section F of plot 11, while that from section F of plot 9 
was practically the same as from section F of plot 8. The 
method of fertilizing plots 8 and g is the same as that for plots 
Ir and 12 respectively, except that nitrate of soda is used on 
the former, and sulphate of ammonia on the latter. The dif- 
ference in yield between plots 8 and 9 might be expected there- 
fore to correspond somewhat to that between plots 11 and 12, 
provided the fertilizers used had like beneficial action on the 
growth of the crops. Such, however, has not been the case, 
as will be seen from the following table, which gives the aver- 
age of the yields for the past three years from the two series 
of sections on both the nitrate of soda and the sulphate of 
ammonia plots. 
Conparison of average yields of corn and stover from sections with 
and without lime. 


4 
AVERAGE YIELDS PER ACRE. 






| Series F, | Series A, 
FERTILIZER. | Plot No. without lime. | with lime. 
| 
Shelled : Shelled | : 
| trarpeeis Stover. cara. Stover. 
| = — 
Bu. Lbs. Bu. Lbs. 
| 7 30.0 2015 | 39.4 2420 
Nitrate of Soda group, = Son}. 4452 2345. | .53<5 2770 
| gic) S4aeo 1990 | 53-7 | 2560 
Beagle fe, 42,2 2325 47.6%.) 238e 
Sulphate of Ammoniagroup,+| II 46.7 2250 50.3 3325 
| 8 1870 53.9 | 2690 



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