On tlie Behavior of Nitrate in Pad ly S^i'-s. q 



1. Paddy plants do not accumulate a sufficient quantity of sugar in the 

 leaves to convert all of the nitric acid absorbed into protein. 



2. In paddy soils, denitrification and also formation of poisonous 

 nitrites may take place. 



As to the first we have instituted some tests. It might be assumed 

 that an injurious accumulation of nitrate may take place in the leaves of the 

 rice plants manured with nitrate but as to this there is no positive proof yet. 

 But the result of our analysis shows practically no difference not only 

 between the leaves of paddy and dry land rice, but also between those 

 of the paddy rice applied with ammonium sulphite and sodium nitrate as 

 shown in the following tables : 



A. Sugar content in the leaves of the paddy and dry land rice. 



