POTATO EXPERIMENTS IX I903. I4I 



STAND OF POTATOES BASED ON NUMBER OE EEET OF ROW 

 REQUIRED FOR 55 HILLS AT TIME OF DIGGING. 



Stand. 



Per ceut of cuttings 

 that piucluced 

 Variety. plants. 



Rose 22 



Early Michigan 46 



Hulett's Rust Proof 37 



.Mills' Mortgage Lifter 20 



Green 2\Iountain 61 



New Queen i 



Polaris 55 



]vlaggie 2^Iurphy 50 



Irish Cobbler 65 



Early Ohio 57 



Gem of Aroostook 28 



Bovee 55 



This very poor stand was occasioned largely by the exception- 

 ally dry ]\Iay and June. In land with proper moisture content 

 the number of cuttings that grew would have been much greater. 

 The differences in the way the different varieties formed plants 

 may have been due to the vitality of the varieties themselves, or 

 to the way in which these particular lots of seed were grown 

 and stored, or to both causes. 



The potatoes were cutivated and kept fairly free from weeds. 

 Flat culture was practiced with the result that, owing to the 

 compact nature of the soil, too many tubers were too near the 

 surface and were more or less sunburned. 



The east half of the field was sprayed with Paris green at the 

 rate of 1-2 pound to the acre on the following dates: June 19, 

 June 25, July 3, July 13, July 27, August 10. The west half was 

 sprayed six times with Bordeaux mixture and one-half pound 

 of Paris green, one barrel to the acre, on the above dates, and 

 twice with Bordeaux mixture alone on August 21 and August 26. 



The experiment was under careful observation during the 

 whole of the growing season. The following extracts from the 

 very full notes which were taken contain the most important 

 observations. The potatoes were all past bloom except as indi- 

 cated in the notes. 



