258 AGRICULTURAL EXPERIMENT STATION. [Jan. 



Analyses of Phosphates used. 



[I., phosphatie slag ; II., Mona guano ; III., Florida phosphate ; IV., South Carolina 

 phosphate; V., dissolved bone-ljlac-k.] 



The following fertilizer mixtures have been applied annually 

 to all the plats, with the exception of Plat 3, which received 

 in 1890 ground apatite and in 1891 no phosphate whatever : — 



Plats. 



Annual Supply of Manurial Substances. 



Plat 1 (south, 6,494 square feet), ■ 



Plat 2 (6,565 square feet). 



Plat 3 (6,636 square feet), 



Plat 4 (6,707 square feet), 



Plats (6,778 square feet), 



Ground phospliatic slag. 

 Nitrate of soda. 

 Potash-magnesia sulphate, 

 Ground Mona guano, . 

 Nitrate of soda, 

 Potash-magnesia sulphate. 

 Ground Florida phosphate, 

 Nitrate of soda, 

 Potash-magnesia sulphate, 

 South Carolina phosphate, 

 Nitrate of soda, . 

 Potash-magnesia sulphate. 

 Dissolved bone-black, . 

 Niti'ate of soda. 

 Potash-magnesia sulphate. 



Pounds. 



127 

 43 



58 

 128 



43| 



59 

 129 



44 



59 

 131 



44^ 



60 



78 



45 



61 



