204 AGRICULTURAL EXPERIMENT STATION. [Jan. 



From an examination of the above tabular statement of the 

 yield of the different varieties of potatoes on trial we arrived 

 at the following conclusions : — 



1. The yield of potatoes is in every instance larger in 

 case sulphate of potash has furnished the potash of the fer- 

 tilizer used than where muriate of potash has served for that 

 purpose. 



2. The yield of the three varieties of potatoes on trial, 

 although raised under a corresponding system of cultivation 

 and of manuring, differs seriously. Beauty of Hebron pro- 

 duces nearly one-sixth more in weight than the New Queen 

 variety, and one-third more than the Clark variety. 



Plats 12, 17, 18, 19 and 21, which remained in grass in 

 previous years, received as top-dressing, muriate of potash, 

 200 pounds, and ground bone, 600 pounds, per acre, at an 

 early date in the spring, 1893. The grass was cut June 27 

 and 28. As the weeds began to infest the plats, the experi- 

 ment of studying a variety of grasses was closed, and the sod 

 turned under during the month of August. Dry lands do 

 not favor for any length of time an economical and clean 

 cultivation of the majority of our best grasses. For details, 

 see eleventh annual report for 1893. 



A. Observations loith Potatoes (^1894). 



During the present season the experiments of the preced- 

 ing year with potatoes were repeated, and several varieties 

 of mixed forage crops substituted for the grasses. Beauty 

 of Hebron, Clark's and New Queen were the varieties of 

 potatoes used in the trial, the seed tubers being selected from 

 our crop of the previous year. Beauty of Hebron were 

 grown on plats 12 and 21, New Queen on 17 and 18, and 

 Clark's on 19 and 20. One plat in each case was supplied 

 with potash in the form of muriate of potash (17, 19 and 21), 

 and one in each case in the form of high-grade sulphate of 

 potash (12, 18 and 20). 



