146 STORRS AGRICULTURAL EXPERIMENT STATION. 
In the discussion of the effect of nitrogenous fertilizers upon 
the yields of oats, on a previous page, reference was made to 
the fact that the number of experiments was smaller than that 
with some of the other crops, and that the conditions of soil 
and season were unfavorable. For this reason only general 
conclusions were drawn from the results of the experiments. 
The same facts should be taken into account in considering the 
effects of nitrogen of the fertilizers upon the composition of 
the crop. Ina brief discussion of the data of Table 14 it may 
be observed that, as noticed in experiments with other crops, 
the proportion of protein in the grain from the “ nothing” 
plots is larger than that in the grain from some of the fertilized 
plots. Inthe grain from the mineral plots there was 14.76 per 
cent. of protein. With 25 pounds of nitrogen per acre in ad- 
dition to the minerals there was practically the same proportion 
of protein, 14.68 per cent. With 50 pounds of nitrogen per 
acre the grain had 16.34 per cent. of protein, a considerable in- 
crease, while with 75 pounds of nitrogen per acre it was 16.97 
per cent., a still further increase, although not so large as be- 
TABLE 17.—Lffects of nitrogenous fertilizers upon yield of proximate 
centages of yteld from the different plots on 



Plot No. Kinds and amounts of fertilizers per acre. P<, Material. 
Ibs. 
8 Grain 
0, 00, 000 | + Nothing, ‘ 5 Straw 
4 Total 
Dissolved boneblack, ; ; 320 6 Grain 
6, 6a, 64, 6c} Muriate of potash, . . : 160 6 Straw 
i Total 
Dissolved boneblack, 5 ; 320 2 Grain 
TeMOy 13 Muriate of potash, . : 5 160 2 Straw 
Nitrogen, : ; ; 25 ie Total 
Dissolved oN Pi ; : 320 2 Grain 
8, 11, 14 Muriate of potash, . ; : 160 2 Straw 
Nitrogen, i : ; 50 ue Total 
Dissolved boneblack, , : 320 * Grain 
9,2. 15 Muriate of potash, . : i 160 | 2 Straw 
Nitrogen, ; . : : 75. = Total 

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