New York Agricultural Experiment Station, 141 

 No. 8. Superphosphate with Much Potash. 



No. 9. High-grade Plain Superphosphate. 



No. 10. Lower Grade Plain Superphosphate. 



KIND OF material. 



Dissolved South Carolina rock 



Odorless phosphate (Thomas slag 

 meal) 



Pouods of material 

 Per cent 



Pounds of 

 material. 



1,200 

 800 



2,000 



Pounds of 

 nitrogen in 

 material. 



Pounds of 

 available 



phosphoric 



acid in 

 material. 



180.0 

 160.0 



340.0 

 17.00 



Pounds of 

 potash in 

 material. 



