On the growth of the Rice Plant. 



By 

 Shinkichi Suzuki. 



Rice has been one of the most important economic crops in 

 Japan. Agricultural Experiment Stations, established in every 

 pcrfecture of Japan, have, for a number of years, issued reports on 

 many and varied experiments with this crop. The attention of 

 agricultural scientists has been given, in no small measure, to the 

 application of fertilizers and the method of cultivation. Unfortunately, 

 many of these experiments ended only in the ascertainment of 

 empirical facts. It is true that mach valuable scientific research, 

 connected with the cultivation of rice, has been conducted in the 

 Central Agricultural Experiment Station and in the Agricultural 

 College, Tokio, yet there still remain many scientific, and likewise 

 practical questions to be worked out in this Island, where the 

 tropical climate exercises an important influence on the growth of 

 the rice plant. 



General Scheme of Experiments, 



The present experiments were undertaken with a view to 

 gaining further knowledge of the development and composition of the 

 rice plant at successive stages in the growth. On April I st , 1913, 

 the young plants, that had been grown in a nursery, were transferred 

 to certain plats, which we will call A, B and fj, at the rate of 10,800 

 bundles per tan (44,068 bundles per acre, i.e. per 4.0804 tan), each 

 bundle consisting of five plants. These plants were cultivated in 

 the usual way, and the manures applied to the three plats were as 

 follws : 



