MANURING EXPERIMENTS WITH PADDY RICE (THIRD YEAR). 
5 
1889. 
Dry matter.20.55 grms. 
Nitrogen.0.366 „ 
Phosphoric acid.0.087 >> 
Potash.0.192 „ 
1890. 
62.66 grms. 
1-774 » 
0-334 » 
0.653 ,, 
l8gi. 
ig.oo grms. 
0.364 „ 
0-073 ,, 
0.245 >• 
As the plants of 1890 were richer in nutrients than those of 
the two other seasons, their development was, of course, also 
better, especially on those plots which did not receive these 
nutrients in the manure. 
Concerning the quantities of nitrogen consumed from the soil 
and manure we found the following results : 
Nitrogen in the 
dry matter of 
the whole crop. 
Nitrogen 
in the 
manure. 
Nitrogen extracted 
from the soil, resp. soil 
and manure. 
°/o grms. 
grms. 
grms. 
Unmanured, 1889.. 1.435 
3-^4 
0 
3-47 
,, 1890.. i.078 
5.66 
0 
3-89 
„ 1891..1.130 
5-.oi 
0 
4-65 
Without nitrogen, 188g. .1.054 
7-54 
0 
7-17 
„ „ 1890..0.937 
7-43 
0 
5.66 
» ,, 1891..0.893 
6-39 
0 
6.03 
Complete manure, i88g..i.og6 
13-37 
9.18 
13.00 
„ „ i8go..0.943 
12.46 
9.18 
10.69 
,, ,, 1891..1.002 
ii -93 
8-33 
n -57 
When considering these results we should keep in mind that 
our soil is rich in nitrogen, containing in its dry matter 0.49%. 
Hence the supply from the soil on the unmanured plots was 
still so large in the third year that the other essential nutrients 
of the soil did not suffice to enable the plants to make full use 
of the nitrogen consumed ; the crop became therefore richer in 
nitrogen than even on the plots liberally manured with ammoni¬ 
acal salts. On the plots which had received phosphatic and 
potassic but no nitrogenous manure the crop was the poorest in 
