44 HATCH EXPERIMENT STATION. [Jan. 



the bugs had ceased to be troublesome, the pure ^^Fungiroid^^^ 

 were employed. The season was hot, with frequent showers, 

 furnishing, therefore, conditions highly favorable to the de- 

 velopment of parasitic fungi, and extreme!}^ unfavorable to 

 the action of the "Fungiroid." It was, however, reapplied 

 at frequent intervals, and always after a heavy rain and while 

 the vines were moist. 



The treatment was applied to one row each of the 60 

 varieties in our variety test. One row each of 38 of these 

 varieties, in an adjoining plat, upon similar soil and grown 

 under precisely similar conditions, was left untreated. No 

 difference whatever could be detected in the extent to which 

 blight affected the treated and untreated vines. ' ' Fungiroid " 

 and Paris green mixiure (prepared) was applied at the rate 

 of 2 pounds per acre to the vines of the treated })lat with 

 Leggett's gun, and in accordance with directions, on each of 

 the following dates: July 18, 18, 22 and 24. Pure "Fun- 

 giroid" was applied twice, at the rate of 1^ pounds per acre, 

 and in the same manner, on August 1 and 3, By the latter 

 date blight had ati'ected all varieties in the plat and to a 

 considerable extent in most cases. The yield from 38 rows 

 treated as described was 7,887J pounds of large and 983 

 pounds of small potatoes. The 38 rows which were un- 

 treated }n'oduced 8,407 pounds of large and OGO pounds of 

 small tubers. The results surely indicate no tavorable influ- 

 ence due to the use of " Fungiroid." 



Scab, of Potatoes. 

 It has been thought by some experimenters that, by an 

 application of sulphur at the time of planting, " scab" of 

 potatoes, even in infected soil, could be prevented. Accord- 

 ingly, as we had such an infected soil where a very scabby 

 crop was raised last season, it was decided to test this point. 

 The plan of the experiment was as follows : one-half the seed 

 required was treated with corrosive sublimate solution in the 

 usual way ; then 240 hills were planted with each kind of 

 seed (treated and untreated), and in the furrow with one- 

 half of these hills sulphur at the rate of 300 pounds per acre 

 was scattered at time of planting. The table below shows 

 the results : — 



