142 STORRS AGRICULTURAL EXPERIMENT STATION. 
experiments in which nitrate of soda was used. The pro- 
portions of protein were, with 25 pounds of nitrogen in sul- 
phate of ammonia, 10.28 per cent.; with 50 pounds of nitrogen, 
10.60 per cent. ; with 75 pounds of nitrogen, 11.68 per cent. In 
the experiments in which dried blood was used as a source of 
nitrogen, the increase in the proportions of protein did not 
correspond to the quantities of nitrogen used. But as only 
two such experiments were made, the results should not be 
compared too closely with those of a larger number of ex- 
periments in which other fertilizing materials were used. 
‘TABLE 15.— Lifect of nitrogenous fertilizers 




Plot No. Kinds and amounts of fertilizers per acre. seh 
Ibs. 
_0, 00, 000} Nothing, . : ‘ . : 2 «8 ie arog 3 
I (and A) | Nitrate of soda, : : : : : 160 2 
2 (and B) | Dissolved boneblack, : : ; ‘ 320 2 
3 (ahd C) Muriate of potash, . : : 5 s 160 2 
Dissolved boneblack, f 5 : P9326 
4 {and D) 1 Nitrate of soda, ; ; : ; : 160 ; 
Muriate of potash, . ; . : { 160 
pland E) 1 Nitrate of an : ; : : ; 160 Z 
6, 6a, | § Dissolved boneblack, ; ; 320 
64 (and F) | ) Muriate of potash, . : : : . 160 3 
( Dissolved boneblack, ; : A : 320 
7 - Muriate of potash, : ; : : 160 2 
Nitrate of soda (Nitrogen, 25 lbs.), . - 160 
Dissolved boneblack, ; : ; 320 } 
8 Muriate of potash, : ; : : 160 2 
Nitrate of soda (Nitrogen, 50 lbs.), . : 320 \ 
Dissolved boneblack, ‘ : ' 320 
9 Muriate of potash, . : : : ; 160 2 
Nitrate of soda (Nitrogen, 75 lbs.}ee ss F 480 
Dissolved boneblack, : : : 320 ) | 
IO Muriate of potash, ; ‘ : : 160 I 
Sulphate of ammonia (Nitrogen, 25 lbs.), . 120 
Dissolved boneblack, A >. ee 320 
II Muriate of potash, | : : : : 160 I 
Sulphate of ammonia (N itrogen, 50 Ibs.), . 240 
Dissolved boneblack, : } : 320 
12 Muriate of potash, : ‘ : : 160 I 
Sulphate of ammonia (Nitrogen, 75 lbs.), . 360 
Dissolved boneblack, : ; ‘ 320 
13 Muriate of potash, 4 ; : : 160 z 
Dried blood (Nitrogen, 25 lbs.), : : 200 
Dissolved boneblack, : : 320 } 
14 Muriate of potash, 5 , : ; 160 2 
Dried blood (Nitrogen, 50 Ibs.), " ; 400 \ 
Dissolved boneblack, Say ; : 320 
15 Muriate of potash, . : : : : 160 2 
Dried blood (Nitrogen, 75 Ibs.), / 600 







