I40 STORRS AGRICULTURAL EXPERIMENT STATION. 
From table 12 it will be noticed that the percentage of pro- 
tein in the grain from the nothing plots was higher than the 
percentage in the grain from many of the fertilized plots. This 
was doubtless due, as already suggested, to the large pro- 
portion of immatured or partially developed grain from these 
plots. The percentage of protein was lowest in the crops 
from the plots (6, 6a, 6b, 6c, F) upon which the mineral ferti- 
lizers were used without nitrogen. 
By comparing the results of the experiments with mixed 
minerals alone and those with nitrogen in addition it will be 
noticed that there was a gradual increase in the proportion of 
TABLE 14.—Lffects of nitrogenous fertilizers upon yields of proxt- 
ylelds from the nothing plot and Jrom the different plots 





No. 
Plot No. Kinds and amounts of fertilizers per acre. eee Material. 
ments. 
lbs. 
O, 00, 000, Nothing, a’ e ie 
Total 
I (and A) Nitrate of soda, toe : hey 
Total 
2 (and B) | Dissolved boneblack, eas ; ree : sien! 
Total 
3 (and C) Muriate of potash, 100 i Set 
| Total 
Dissolved boneblack, . nam 320 7 | Grain 
DEIN By Nitrate of soda, ‘ A . : 160 7 | Stover | 
: | Total 
Nitrate of soda, . : ; ; 160 4 ACSTAIR 
5 (and E) Muriate of potash, : : ; 160 7 Stover 
Total 
6, 6a, 64, Dissolved boneblack, : acer 320 ris Grain 
6c (and F) | ( Muriate of potash, ‘ : ; 160 13 | Stover 
Total 
Dissolved boneblack, : ‘ ; 320 13 Fi Grau 
Feet nal 3. Muriate of potash, ~ . : ; 160 13 | Stover 
Nitrogen, . . : ‘ 25 ats Total 
Dissolved boneblack, ‘ ; : 320 9 | Grain 
RG pe ek Muriate of potash, : . ; 160 g | Stover 
Nitrogen, . : : 5 50 ae Total 
Dissolved boneblack, ; : : 320 g | Grain 
112,15. Muriate of potash, : : : 160 g | Stover 
DAs ott : : : : : 75 ae To ta 



