202 AGRICULTURAL EXPERIMENT STATION. [Jan. 



Composition of Fertilizers used. 

 [Per Cent.] 



The final mechanical preparation of the different 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 bushels 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 Avere 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 INIay 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. 



