48 



highest, and that of potash is much greater than that of phosphoric 

 acid. The percentage of potash in the cleaned rice is lowest, and 

 that of nitrogen is much higher than that of phosphoric acid. Thus 

 these three ingredients, contained in each part of the grain, are not 

 in any definite proportions, as the following table shows. 



Table 39. Proportion of Nitrogen, Phosphoric acid 

 and Potash in the Parts of Grain. 



The percentage of chaff, bran and cleaned rice in the dry 

 matter of the grain were calculated from the results of the experi- 

 ments carried out in our Station at Taihoku, and they were 27.0^, 

 5.8 % and 67.2 % respectively. From these figures the plant foods 

 stored in each portion of the grain were calculated, to show their 

 distribution among the chaff, bran and cleaned rice. 



Table 40. Nitrogen, Phosphoric acid and Potash 

 in one Kilogram of the Grain dried at 100 C. 



The above table shows that the distribution of these ingredi- 

 ents is very different in the various parts of the grain. For instance, 

 about 77 % of the total nitrogen in the grain is contained in the 

 cleaned rice, and a little over 10 % in the bran, and a like percent- 

 age in the chaff; while 43 % of the total phosphoric acid in the 

 grain is stored in the cleaned rice and about the same percentage 



