84 



HATCH EXPERIMENT STATION. 



[Jan. 



Materials Used. 



Rate per 



Acre 

 (Pounds). 



Nitrate of soda, 



Dried blood, .... 



Tankage, 



Acid phosphate, 



Sulphate of potash (high grade). 



250 

 100 

 250 

 400 

 300 



This fertilizer was applied May 9, and the seed was planted 

 the same day. The variety was Carmen No. 1. The tubers 

 selected were uniform in form, weight and all external char- 

 acteristics, as far as it was possible to obtain such. The 

 weights of the tubers were as follows: No. 1, 160 grams; 

 No. 2, 135 grams; No. 3, 160 grams; No. 4, 140 grams; 

 No. 5, 135 grams; No. 6, 140 grams; No. 7, 140 grams; 

 No. 8, 140 grams. The first seven tubers were treated 

 with corrosive sublimate solution, and sun-sprouted ; No. 

 8 was not treated. Each tuber was cut to exact halves by 

 weight, and the number of eyes on each half reduced to five 

 in the same part of the tuber. The tubers were all typical 

 of the variety, and all were entirely free from scab, but there 

 had been a few scabbed potatoes in the crop from which they 

 came. They were all planted face downward at the same 

 depth, the halves of tuber No. 1 in tiles 1 and 2, the halves 

 of tuber No. 2 in tiles 3 and 4, and so on, — and finally 

 one-half of tuber No. 8 in tile 15. They all came up in 

 good season, but somewhat irregularly, May 26 to May 28. 

 They were most carefully cultivated by hand, kept entirely 

 free from weeds and from bugs by hand pulling and picking. 

 Bordeaux mixture was applied six times, June 6 to July 25. 

 There was practically no injury from either flea beetle or 

 blight. The vines in different tiles showed quite different 

 minor characteristics, and ripened unevenly, September 20 

 to October 1, when the crop was harvested. At that time 

 there was a very little yellowish-green color on part of one 

 stalk in tile 9 and on one entire stalk in tile 8. All leaves 

 had for some time been dead. The yields and remarks are 

 given in the table : — 



