INFLUENCE OF THE ALKALI SALTS UPON THE GROWTH OF RICE PLANTS. 267 
2. Resutlt with Na 2 S0 4 and K 2 S0 4 . 
s~\ Infi /• -v t"> c 
used 
Length 
of leaf 
mm. 
Length 
of root 
mm. 
Number 
of roots 
to N. Na 2 S0 4 
30 CC. 
35 
35 
2 X 
^ N. Na 2 S0 4 
25 CC. + 
To N. K 2 S0 4 
5 cc. 
67 
43 
6* 
tq N. Na 2 S0 4 
20 cc. + 
to N. K 2 S0 4 
10 cc. 
47 
37 
6 X 
To N. Na 2 S0 4 
15 cc. + 
& N. K 2 S0 4 
15 cc. 
47 
37 
6* 
to N. Na 2 S0 4 
10 cc. + 
A N. K 2 S0 4 
20 cc. 
47 
35 
6 X 
T i s N.Na 2 S0 4 
5 cc. + 
To N. K 2 S0 4 
25 cc. 
5o 
43 
7* 
To N. K 2 S0 4 
30 cc. 
40 
37 
6* 
Distilled water 30 cc. 
68 
43 
7 
Culture period Feb. 1st — Feb. 18th (1913). 
Initial length of seedlings 20 mm. 
3. Result with NaN0 3 and KN0 3 . 
Solutions used 
Length 
of leaf 
mm. 
Length 
of root 
mm. 
Number 
of roots 
rij N. NaN0 3 
30 cc. 
35 
35 
2 X 
-L N. NaN0 3 
25 cc. + T 7 S N. KNOg 
5 
cc. 
60 
37 
7 X 
J<5 N. NaNOg 
20 cc. + ^ N. KNOg 
10 
cc. 
5o 
40 
6 X 
T 7 Ö N. NaNOg 
15 cc. + tü N - KNOg 
15 
cc. 
50 
35 
7 X 
tVj N. NaNOg 
10 cc. + N. KNOg 
20 
cc. 
43 
35 
7 X 
^ N. NaNOg 
5 cc. + j'ö N. KNOg 
25 
cc. 
5o 
35 
7* 
Tü N. KNOg 
30 cc. 
40 
35 
4 < 
Distilled water 30 cc. 
68 
43 
7 
Culture period ■ 
Initial length of seedlings 
•Feb. ist— Feb. 18th (19 
20 mm. 
13)- 
