12 MANURING EXPERIMENTS WITH PADDY RICE (THIRD YEAR). 
tuting potash to some extent, a fact frequently noticed in ash 
analyses and recently announced by P. Wagner to have also 
some practical importance on the yield of crops. The straw 
from the plots not supplied with phosphoric acid, is the poorest 
in this nutrient, as we have already stated (bulletin 8, p. 30) ; 
and on the plot without nitrogen a smaller amount of sulphuric 
acid entered the straw than in the other cases, because the 
manure applied did not contain any ammonium sulphate, in 
which form the other plots received their nitrogen. 
B. Grain, 
The grain harvested on the plots of series I differed remarka¬ 
bly in quality. According to the judgment of experts the grain 
from the unmanured plots was the best, it resembled Sekitori- 
tnai, one of the best kinds of Japanese rice, produced in the 
province of Ise ; the grains were uniform in shape, large in size, 
and had a fine lustre and a smooth surface without any spots 
or wounds. Only a little inferior to these was the grain from 
the plots which had not received any phosphatic fertilizer. 
Next in order of quality was the grain produced with the help 
of the complete manure ; then followed that obtained on the 
plots left without potash. The grain produced without any 
nitrogenous manure was of the poorest quality, resembling 
Akita-mai a most inferior kind, produced in the north of the 
main island in Akita prefecture ; the grains from these plots 
had a dark colour, numerous white spots and wounds on their 
surface, and were very brittle. 
The weight of 1000 grains obtained in this series, was as 
follows (in grms.) : 
Unhulled 
grain. 
Hulled grain. 
Chaff. 
Chaff, per cent 
of unhulled 
grain. 
Unmanured .. . 
. .. 32.08 
26.61 
5-47 
17.0 
Without phosphoric 
acid. 30.77 
2 5-47 
5-30 
17.2 
„ potash 
.. 28.56 
23.69 
4.87 
17.0 
„ nitrogen .. 
. .. 30.76 
25-43 
5-33 
* 7-3 
Complete manure . 
. .. .28.68 
23.78 
4.90 
17.1 
