i6 



AGRICULTURE OF MAINE. 



THE DEVELOPMENT OF THE POTATO TUBER. 



White Star potatoes, planted May 20th, at Burlington, Vt. 

 Yields and size of tubers at different dates. 



Total yield 

 Date of Digging. per acre. 



August 2 58bu9bel9 



" 13 115 



" 22 230 



September 1 304 



" 12 356 



'• 2-2 379 



It is noteworthy as indicating how little the fundamental 

 importance of the continuous health of the plant during this 

 vegetative period is appreciated, that the date of its beginning 



Figure l. Tip-burn of the potato leaf. Primarily due to insul 

 cient water but increased by any other unfavorable condition. 



