388 Y. KOZAI, M. TOYONAGA AND M. NAGAOKA. 



riiosphoric aci'l 

 per frame. 



ICind'^ of j')liospli^tic iiiniiurcs. 



Yield per fi 



a me 1893 





Applied 

 in 

 1890. 

 Grms. 



Unrecovered 

 in 

 1892. 

 Grms. 



Straw. 

 Grms. 



Full 

 grain. 



Grms. 



Empty 

 grain. 



Grms. 



\Mwle 

 crop. 



Grms. 



0 



0 



Xo phosphatic manure 



131 



71 



2 



204 



389 



2.792 





156 



92 



2 



250 



7.7S 



5.721 





155 



93 



3 



251 



4-59 



2.982 





145 



9- 





239 



9.1S 



6.699 





147 



97 



2 



246 



6.97 



5-835 



Peruvian quano 



147 



S9 





238 



13-94 



II 875 





181 



122 



3 



306 



6.885 



5-316 



Thouias yihosphate 



169 



112 





283 



13-77 



10.929 





I go 



141 



3 



334 



6.885 



5-405 



L"i , 1 1. 1 1. 



156 



97 



2 



255 



1377 



10.348 



" " " 



184 



126 



4 



314 



6.885 



5.406 



Crude bone dust 



197 



104 





303 



13-77 



10-473 





184 



126 



3 



313 



6.S85 



6.107 





130 



76 



2 



20S 



13.77 



12.262 





155 



96 



2 



253 



6.884 



6.571 





151 



91 



2 



244 



13-77 



13-571 





157 



92 



3 



252 



In 1894 the .same experiments were re 

 was as follows : 



ipeated. 



The 



average yield 



