i>02 AGRICULTURAL EXPERIMENT STATION. [Jan. 



Composition of Fertilizers used. 



[Per Cent.] 



Nitrogen. 



Phosphoric 

 Acid. 



Fine-ground bone, 

 Sulphate of potash, 

 Muriate of jiotash. 



4.02 



22.96 



50.20 

 46.00 



The final mechanical in-eparation of the difierent plats was 

 the same in all cases. The fertilizer was applied broadcast, 

 and subsequently thoroughly harrowed in before planting. 

 The potatoes were planted May 10 on all plats at the rate of 

 nineteen bushels per acre, or two and one-half l)ushels pota- 

 toes per plat. Potatoes used were either whole ones of 

 medium size, or when larger were cut in pieces of sizes cor- 

 responding to the former. Plats 11 and 20 were planted 

 with Clark's variety ; plats 13 and 14 were planted with New 

 Queen variety ; plats 15 and 16 were planted with Beauty of 

 Hebron variety. 



The crop began to break ground jMay 26, and was subse- 

 quently cultivated and hoed June 5 and June 20. The pota- 

 toes were in bloom June 24, and the tops began to die 

 August 14. The crop was harvested August 23 and 24. 



The potatoes were in all cases of a superior appearance ; 

 only one-eighth to one-ninth of the entire crop was not mar- 

 ketable as a first-class article, on account of small size. 



