144 STORRS AGRICULTURAL EXPERIMENT STATION. 
the use of 50 pounds, while the yield of protein with 75 pounds 
of nitrogen was considerably increased over the yield with 
50 pounds. This is shown quite clearly by the last two columns 
of the tables, which compare the yield from the different nitro- 
gen plots with the yield from the mineral plots. The yield 
of dry matter with 25 pounds of nitrogen was 35 per cent. 
greater than that from the mineral plots; the yield with 50 
pounds of nitrogen was 65 per cent. greater, while the yield 
with 75 pounds of nitrogen was only 68 per cent. greater than 
the yield from the mineral plots; but for the same series of 
plots the increase in the proportion of protein from the use 
of nitrogen was 43, 81, and 100 per cent. respectively. 
TaBLE 16.—Effects of nitrogenous fertilizers 









Plot No. Kinds and amounts of fertilizers per acre. Ra 
lbs. 
0, 00, 000} Nothing, 3 ; ; ; + Pigeekeren 3 
6, 6a Dissolved boneblack, : 5 : : 320 
64, 6c Muriate of potash, : : : : 160 3 
Dissolved boneblack, . ; : 320 
7 Muriate of potash, io 2 
Nitrate of soda (Nitrogen, a ‘Ibs. ) ; 160 
( Dissolved boneblack, . 4 iol 
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, >, ‘Tbs. ) 5 480 
( Dissolved boneblack, . ; ol 
10 Muriate of potash, - 160 I 
| Sulphate of ammonia (Ni itrogen, 25 lbs. ), V20 
( Dissolved boneblack, . ; 320) 
Il Muriate of potash, : 6 I 
! Sulphate of ammonia (Nitrogen, 50 Ibs.), 240 
Dissolved boneblack, . : : : 320 
12 Muriate of potash, : ce : 160 I 
Sulphate of ammonia (Nitrogen, 75 lbs.), 360 
| Dissolved boneblack, . 4 ; : ot 
13 Muriate of potash, : - 160 2 
Dried blood (Nitrogen, 2 5 Ibs. : . 200 
Dissolved boneblack, . ; : 320 
14 Muriate of potash, ‘ : ol 2 
Dried blood (Nitrogen, 50 Ibs. a) : : 400 
( Dissolved boneblack, . : : 320 
15 Muriate of potash, ; ; 160 2 
| Dried blood (Nitrogen, 76 Ibs. he ; 400 

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