54 STORRS AGRICULTURAL EXPERIMENT STATION. 
upon the yields of dry matter and protein in the soy bean seed 
are indicated by the results in Table 15. As in the experi- 
ments with corn (grain), the highest percentage of protein was 
found in the seed on the sections of the plots without fertilizer. 
As suggested in the case of the corn, this is probably due to 
the presence of a large amount of immature or partially devel- 
oped seed in the crop from those sections. ‘Taken as a whole, 
the percentage of protein in the seed from the sections which 
were supplied with nitrogen was considerably larger than in 
the seed from the sections of the mineral plots, yet there seems 
to be no constant relationship between the percentages of pro- 
tein in the seed from the different plots and the quantities of 
nitrogen used in the fertilizer. Ason the average of the exper- 
iments for the past four years, the percentages of protein in 
the seed from the experiments of 1900 have been somewhat the 
higher from the sections of the plots supplied with the larger 
quantities of nitrogen, but this result has not been constant. 
TABLE 15. 
SPECIAL NITROGEN EXPERIMENTS ON SOY BEAN SEED. 
Percentages and pounds per acre of dry matter and of protein. 




Percent. of 



i 
WH . 
3 FERTILIZERS PER ACRE. > ee ©, (yieldon basis 
ig re uv a8 of yield 
Oy md a5 . a a \from min’ral 
: ahead ee seen 
a the 
S Kind. = "op A * ne eit 
ie v 3 Paes) ice AY 
= : 8 
TL bse Lbsai-9. Wwibs: 5 % Lbs.|. % % 
o| Nothing, - - 500 [89.0] 445 |46.07| 205 | 60 63 
Mixed Miners! as No. 6a, ron 
Nitrate of Soda (25 Ibs. N. ), 160 
813 188 8) 722,146.57) 3301 » O8miasos 
Mixed Minerals, as No. 6a, |480 
Nitrate of Soda o lbs. N.),'320 § | 900/999] 801140: 35) 372) LCs ag 
Mixed Minerals, as No. 6a, |480 938 |89.3, 838 |46.75| 392, 114 | 121 
Ne) 
Nitrate of Soda (75 lbs. N.), 480 
Dis. Bone-black, { Mixed § |320 os 
Mur. of Potash, Sie et 700 90.6, 634 43.19 274, * | * 
Mixed Minerals, as No. 6a, |480 | 
Ae Sulph. of Am. (25 lbs. N.), 120 
goo |88.9| 800 |45.19| 362, 108 | I1T. 
Mixed Minerals, as No. 6a, 
ie ; Sulph. of Am. (50 Het sat 975 189-0) 808 145\- 13/3024 5th aee 
§ Mixed Minerals, as No. 6a, |480 84-81 8 6 
| Sulph. of Am. (75 Ibs. N.), 360 QES (O78) 002 145 44 OU ee ee 
oo| Nothing, - - 463 |89.7| 415 |47.69| 198} 56 61 
62| Mixed Minerals, as No. oo co 938 |89.7| 841 |44.75|376| * * 
I2 









* The average of the yields on plots 6a and 60 is here taken as 100 for comparison. 
