MAINE AGRICULTURAL EXPERIMENT STATION. I905. 



about January i when the potatoes were next examined, and the 

 percentage of potatoes that had remained sound, are given in the 

 table which follows. 



Merchantable potatoes from Ufty-iive hills of nine varieties of 

 potatoes at time of digging and after storing. 



"Variety. 



Date of 



harvesting. 



Weights and Per Cent 

 Merchantable Potatoes. 



Unsprayed. 



Sprayed. 







Early Michigan 



Bovee 



Early Ohio 



Gem of Aroostook 



Irish Cobbler* 



Mill's Mortgage Lifter 



Green Mountain 



Polaris 



Maggie Murphy 



Average of 4 early varieties... . 



Average of 4 later varieties 



Average of 8 varieties 



Sept. 8 

 Oct. 7 . 



Sept. 8 . 

 Oct. 7 . 



Sept. 8 . 

 Oct. 7 . . 



Sept. 8 

 Oct. 7 . 



Sept. 8 

 Oct. 7 . 



Sept. 8 . 

 Oct. 7 . . 



Sept. 8 

 Oct. 7 . 



Sept. 8 

 Oct. 7 . 



Sept. 8 . 

 Oct. 7 . 



Sept. 8 . 

 Oct. 7 . 



Sept. 8 , 

 Oct. 7 . 



Sept. 8 , 

 Oct. 7 . 



27 

 44 



50 

 85 



10 

 53 



22 



90 



11 



29 



61 



90 



10 



58 



22 



78 



62 

 64 



65 

 97 



49 

 76 



72 

 92 



35 



80 



52 

 95 



33 

 53 



52 

 90 



9 

 44 



16 



86 



15 



46 



39 

 86 



32 

 63 



48 

 91 



23 

 55 



43 



88 



51 



72 



81 



91 



153 



130 

 "94 



87 



75 

 104 



• Omitted from averages. 



Experiments made at the Vermont Station* showed that in 

 the case of potatoes dug every 12 days, August 25 to September 

 30 in 1902, and every 7 days, August 31 to September 28 in 

 1903, there was a much larger weight of potatoes still sound at 

 the time of the later digging than from the earlier diggings. 

 This is in accord with the experiments here reported, except that 



*The relation of date of digging potatoes to the development of rot; L. R. Jones 

 and W. J. Morse, Proceedings Society for Promotion of Agricultural Science, 1904 



