MANURING EXPERIMENTS WITH PADDY RICE (SECOND YEAR). 
21 
tan ii kilogramms of nitrogen and n kilogramms of potash, 
were applied to all plots alike. 
The general plan of the experiments will be seen from the 
following compilation in which the figures given for the 
phosphoric acid, signify total phosphoric acid without reference 
to its solubility. 
No. 
of plots. 
Kind of phosphate. 
Phosphoric 
per plot 
grms. 
acid applied 
per tan 
kilogrms. 
I. 
20, 
39 - 
Without phosphoric acid. 
0 
O 
2, 
21, 
40. 
Sodium phosphate.. 
3-67 
4.40 
3 . 
22, 
41. 
1 » n .... 
7.34 
8.80 
4 . 
23 , 
42. 
Double superphosphate. 
3-89 
4.67 
5 . 
24, 
43 - 
> > »» 
7.78 
9-34 
6, 
25 , 
44. 
Precipitated phosphate.. 
4-59 
5-50 
7> 
26, 
45 - 
J» 
9.18 
II.OO 
8, 
27 . 
46. 
Peruvian guano 
6.97 
8.36 
9> 
28, 
47 - 
»» »> .... 
1394 
16.72 
10, 
29 . 
48. 
Thomas phosphate 
6.885 
8.26 
11. 
3°, 
49. 
>» »> * * 
Ï 3-77 
16.52 
12, 
31, 
50. 
Steamed bone dust 
6.885 
8.26 
13, 
32, 
5i- 
1 i »» »» • • 
13-77 
16.52 
14. 
33 , 
52 . 
Crude bone dust .. 
6.885 
8.26 
I 5 r 
34 , 
53 - 
»» >> >> .... 
1 3-77 
16.52 
l6, 
35 , 
54 - 
Bone ash. 
6.8S5 
8.26 
* 7 - 
36 , 
55 - 
»1 »» • • * * . * * • • 
13-77 
16.52 
l8, 
37 - 
56. 
Phosphorite. 
6.885 
8.26 
19. 
38, 
57 - 
»» . . • • . • 
13-77 
16.52 
With each kind of manure 6 single trials were accordingly 
made, 3 with a small quantity and 3 with a large one, the latter 
being just the double of the former. 
The yield, average of 3 equally treated plots was, as follows : 
