Potato Failures. 
23 
limate gave no result in one case, while in the other it gave a gain of 16%. 
A strong solution, on the other hand, gave a loss of 21%. 
Results. —1. These experiments indicate that formalin has no marked 
value w r hen the treated seed is planted on old potato ground. 
2. A weak solution of corrosive sublimate has a slight value, but a 
strong solution is injurious when the treated seed is planted on old potato 
land. 
TABLE II., SHOWING RESULTS OF EXPERIMENT NO. II. 
m 
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3 
t£ 
5+h in 
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£ 
HH 
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TREATMENT 
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oi 
s 
s 
2 
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z n 
£ 
PH 
( 
Check_ 
5 
45 
9 
I. 
Pearl_■< 
l 
Formalin_ 
6 
48 
8 
11# loss 
( 
Check_ 
3 
24% 
8 
II. 
Pearl_■< 
l 
Formalin.. _ 
4 
33 
8% 
10 
o# gain 
( 
Check_ 
4 
40 
III. 
Pearl_■< 
l 
Formalin_ .. _ 
4 
36% 
9 
10# loss 
r 
Check_ .. _ 
6 
40 
Rural 
>■ 
1—1 
Corrosive Sublimate, weak solution... 
8 
62 
7% 
16# gain 
New Yorkers 
L 
Corrosive Sublimate, weak solution_ 
4 
26% 
6% 
Neither gain 
or loss 
V. 
Rural 
Check__ _ 
4 
27 
m 
New Yorkers \ 
Corrosive Sublimate, strong solution.__ 
4 
21% 
5% 
22# loss 
Experiment III —These experiments were conducted by C. H. Bliss in 
1902; they were also made to test the practical value of treating seed when 
such seed is planted on old potato ground. Home grown Rural New Yorker 
seed was used in this experiment. A short rotation of potatoes, wheat and 
alfalfa has been practiced on this place. A fair crop of alfalfa was plowed 
under in the spring before planting. The ground was plowed about nine 
inches deep and the seed was planted four inches deep on May 22. The cul¬ 
tivations and irrigations were the same in all the plats. The runs were 
made about eight inches deep. 
This was an exceptionally poor season for this section, and the returns 
given in this table are considerably below an average crop. A sack of tubers 
is estimated at 100 pounds. 
Plat 1 Check —The seed in this plat was rough and more or less cov¬ 
ered with sclerotia of Corticium. This plat occupied slightly the best soil. 
The plants all suffered some from the attack of this fungus. Six hundred 
pounds of seed gave a return of 8,270 pounds of tubers. The tubers were 
rough and of a poor quality. 
Plat II —The seed of this plat was the same as that used in check. It 
was treated in a solution of one ounce of corrosive sublimate to 8 gallons 
of water, iy 2 hours on May 15th and planted on May 22nd. The plants were 
backward from the start and never fully overtook the check plants. All 
plants were more or less diseased, and the quality of the tubers was no bet¬ 
ter than those of the check plat. Six hundred pounds of seed gave a return 
of 6,545 pounds of tubers, making a yield of about 11 pounds of tubers for 
every pound of seed planted—a loss of 20%. 
Plat III —All the seed in this plat was free from sclerotia; however, 
most of the tubers were more or less covered with hyphae. The plants 
