INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 259 
(The weight refers to that of five plants). 
Salts 
Amount of salts added to 2000 grams of soil 
used 
g. mol. wt. 
lg. mol. v 
t.y^g. mol. wt. 
gLg. mol. wt. L-l ö g. mol. wt- 
2öüg- mo1 - wt -ToooS- mo1 - Wt - 
Control. 
Total yield 
— 
— 
g- 
2.45 
g. 
2.10 
2.30 
g. 
2.25 
2.00 
MgS0 4 
Seed 
— 
— 
0.45 
0.50 
0.50 
0.70 
0.65 
0.50 
Straw 
— 
— 
1.70 
1.30 
1.30 
1.30 
1.30 
1.20 
Root 
— 
— 
0.30 
0.40 
0.30 
0.30 
0.30 
0.30 
Total yield 
— 
— 
— 
0.70 
1.40 
2.30 
2.20 
2.00 
MgCl 2 
Seed 
Straw 
— 
— 
— 
0.10 
0.20 
0.70 
0.65 
0.50 
— 
— 
— 
0.45 
0.95 
1.30 
>.25 
1.20 
Root 
— 
— 
— 
015 
0.25 
0.30 
0.30 
0.30 
Total yield 
— 
— 
— 
0.20 
1.95 
2.00 
2.35 
2.00 
CaCl 2 
Seed 
— 
— 
— 
0.00 
0.45 
0.50 
0.85 
0.50 
Straw 
— 
— 
— 
0.10 
1.20 
1.20 
1.25 
1.20 
Root 
— 
— 
— 
0.10 
0.30 
0.30 
0.35 
0.30 
Total yield' 
— 
— 
0.95 
1.90 
2.45 
2.50 
3IO 
2.00 
Na 2 S0 4 
Seed 
— 
— 
0.00 
0.40 
0.85 
0.85 
0.90 
0.50 
Straw 
— 
— 
0.70 
1.20 
L25 
1.30 
I.60 
1.20 
Root 
' 
— 
0.25 
0.30 
0.35 
0.35 
O.60 
0.30 
Total yield 
— 
— 
0.60 
1.20 
2.20 
2.70 
2.40 
2.00 
NaCl 
Seed 
— 
— 
0.10 
0.20 
0.70 
1. 00 
0.80 
0.50 
Straw 
— 
— 
0.30 
O.80 
1.20 
1.30 
1.30 
1.20 
Root 
— 
— 
0.20 
0.20 
0.30 
0.40 
0.30 
0.30 
Total yield 
— 
— 
— 
1.50 
2.35 
2.70 
3-40 
2.00 
Na 2 C0 3 
Seed 
— 
— 
— 
0.20 
0.70 
1. 00 
1.50 
0.50 
| Straw 
— 
— 
— 
1. 10 
i 25 
1.30 
1.40 
1.20 
Root 
— 
— 
— 
0.15 
0.40 
0.40 
0.50 
0.30 
Total yield 
1 
— 
2.45 
3.40 
310 
2.65 
2.55 
2.00 
NaHCOj 
1 Seed 
— 
— 
0.45 
1.25 
0.85 
0.80 
0.75 
0.50 
I Straw 
— 
— 
1.60 
1.55 
1.55 
>•35 
>•35 
1.20 
Root 
— 
— 
0.35 
0.60 
0.70 
0.50 
0.45 
0.30 
