INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 267 
2. Resutlt with Na 2 S0 4 and K 2 S0 4 . 
Solutions used 
Length 
of leaf 
Length 
of root 
Number 
of roots 
Xü N. Na 2 S 0 4 30 cc. 
' 35 
35 
2 X 
To N. Na 2 S 0 4 25 cc. + T \j N. K 2 S 0 4 5 cc. 
67 
43 
6 X 
Jg N. Na 2 S 0 4 20 cc. + ^ N. K 2 S 0 4 10 cc. 
47 
37 
6 X 
T \> N. Na 2 S 0 4 15 cc. + T 7 0 N. K 2 S 0 4 15 cc. 
47 
37 
6 X 
T 7 0 N. Na 2 S 0 4 10 cc. + t 7 ö N. K 2 S 0 4 20 cc. 
47 
35 
6 X 
N. Na 2 S 0 4 s cc. + ^ N. K 2 S 0 4 25 cc. 
50 
43 
7X 
T ’o N. K 2 S 0 4 30 cc. 
40 
37 
6 X 
Distilled water 30 cc. 
68 
43 
7 
Culture period Feb. ist — Feb. 18th (1913). 
Initial length of seedlings 20 mm. 
3. Result with NaN0 3 and KN0 3 . 
Solutions used 
Length 
of leaf 
Length 
of root 
Number 
of roots 
N. NaN 0 3 30 cc. 
35 
35 
2 X 
N. NaNOg 25 cc. + Xö N. KNOg 5 cc. 
60 
37 
7 * 
^ N. NaNOg 20 cc. + xs N. KNO s 10 cc. 
5 o 
40 
6 X 
N. NaNOg 15 cc. + J s N. KNO a 15 cc. 
50 
35 
7 * 
3^ N. NaNOg 10 cc. + Xö N. KNOg 20 cc. 
43 
35 
7 * 
XQ N. NaNOg 5 cc. + X5 N. KNO s 25 cc. 
50 
35 
7 * 
N. KNOg 30 cc. 
40 
35 
4 * 
Distilled water 30 cc. 
68 
43 
7 
Culture period Feb. 1st— Feb. 18th (1913). 
Initial length of seedlings 20 mm. 
