AGRICULTURAL EXPERIMENT STATION. 



101 



1 

 3 



4 



5 

 6 



la. 

 3a. 



4a. 



5a. 

 6a. 



Kind of Fertilizer. 



Acid S. C. Rock 



Muriate of potash 



Nitrate of soda 



Thomas' Slag 



Muriate of potash 



Nitrate of soda 



Fine ground S. C. Rock. 



Muriate of potash 



Nitrate of soda 



Muriate of potash 



Nitrate of soda 



No fertilizers 



Acid S. C. Rock 



Muriate of potash 



Nitrate of soda. 



Thomas' Slag 



Muriate of potash 



Nitrate of soda. 



Fine ground S. C. Rock. 



Muriate of potash 



Nitrate of soda 



Muriate of potash .... . 



Nitrate of soda 



No fertilizer 



Amount 



No. 



Total 



Yield 

 per aire 



per 



missing 



yield per 



in hu-li.. 

 comput'd 



acre in 



hills. 



acre In 



for 870 

 hills per 



lbs. 





bush. 



plot. 



500) 









mo } 



220 



218 



292 



150) 









1000 ) 









100} 



301 



182 



278 



150) 









1000) 









100 



458 



134 



281 



150 ) 









loo ; 



150 i 



576 



104 



255 







434 



128 



155 



500) 









100} 



327 



213 



344 



150) 









10001 









ioo y 



251 



192 



270 



150 J 









ioooi 



150 J 









221 



151 



203 









100 ( 

 150 i 



230 



202 



276 ' 









84 



109 



This experiment is interesting in showing the remarkable effect 

 of commercial fertilizers on some soils. The average of the plots 

 receiving no fertilizers was 132 bush, per acre. The average of the 

 plots receiving nitrate of soda and muriate of potash was 262 bush 

 per acre. Here the crop was doubled by adding 150 lbs. of 

 nitrate of soda and 100 lbs. of muriate of potash. 



The cost of the chemicals in this case was $5.50. 



The extra cost of 130 bush, of potatoes was about 4.2 cents 

 per bushel. 



No addition to this crop was produced by using South Carolina 

 Rock or Thomas Slag. But the use of 500 lbs. of Acid South 

 Carolina Rock, costing $4.50, caused an additional gain to that 

 made by the nitrate of soda and muriate of potash of 56 bush, 

 at a cost of 8 cents per bush. 



This experiment has a local value, if Mr. Keene and his neigh- 

 bors have much soil of this character, as indicating what they 

 shall use for fertilizers in growing potatoes. 



