Lys STORRS AGRICULTURAL EXPERIMENT STATION. 
It will be observed that on the sections without additional 
lime the yield from plot 12, having the largest ration of sul- 
phate of ammonia, was considerably smaller than that from 
plot 9, having the largest ration of nitrate of soda; while on the 
sections treated with lime in addition to the regular fertilizers 
the yield from plot 12 was practically the same as that from 
plot 9. If the difference between the yield with the sulphate 
and that with the nitrate is due to an acid condition of soil 
caused by the former material, then in this particular case it 
would seem not improbable that the sulphuric acid from the 
ammonium sulphate might have been neutralized by the lime. 
It is not meant by this, however, that the neutralizing of sul- 
phuric acid set free by the nitrification of ammonia, or of acids 
otherwise formed in the soil, is the sole or necessarily the chief 
factor to be considered in explaining the beneficial action of 
lime. Indeed, the results of experiments for 1898 and 1899, 
as seen in the table -above, show that the yields from all the 
fertilized sections, which were treated with lime in addition to 
the regular fertilizers (not considering the plots with no fertil- 
izer), were better than the yields from sections without lime. 
The fact that where lime was used there was a considerable 
increase in the yields from the nitrate of soda group as well as 
in those from the sulphate of ammonia group of plots would 
seem to indicate that the lime had some direct beneficial effect 
upon the fertility of the soils aside from its neutralizing action, 
as nitrate of soda would hardly cause injurious acidity. It may 
be that the lime aided in the nitrification of the ammonia of 
the sulphate and of other nitrogen compounds present in the 
soil. In how far this may be the case these experiments are 
not calculated to indicate. 
The amounts of nitrogen in the fertilizers and the yields of the 
crop.—The figures in the following tables are intended to show 
what increase in the total yield (corn and stover) accompanies 
the increase in the amount of nitrogen in the fertilizer. The 
yields from the sections (Series A) at the north ends of the 
plots are given in Table 37; those from sections at the south 
ends (Series F) in Table 38. The weights of.the yields are 
given per section and per acre. The yields per section are 
determined by actual weighings of the crop from each section. 
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