= ae AU lg mes RRS i 2 SD a a ae A 
“gerd 4 { ‘ * J. f 
New York AGRICULTURAL EXPERIMENT STATION. 253 
~ 
On the five B plats, with dissolved bone black and potassium 
sulphate applied in equal amounts, and nitrogen as follows, the 
decayed tubers were as here given in pounds: 










Sodium NO Ammonium 
nitrate. nitrogen. sulphate. 
ete PSII Ree eS elec a ose: ck Pate cos & o/ahe « Rowe oe B 8 16.86 B10 46 .92 B 9 3.63 
RONG t,he bevy cc vcs cds vvicdeos Bere. S500 os eee B12 = 14.64 
NMR eRe Fo 5 cole he S Da ve ala dein vnc dd a 15.93 46 .92 9.14 




The record of F plats would seem to indicate that the potash 
was potential in rotting the tubers, but on the B plats no such 
action can be traced. It should, however, be remembered that 
the same amounts were applied in both series, while the B plats 
being double the size there was only half as much of the applica- 
tion per acre as on the F plats, which may be the reason (if the 
rot of F plats was at all due to potash) why there was not the 
same uniformity in decayed tubers as shown on the latter plats. 
The general slope of these plats is very slight, but to the north 
and east. Number 3 lies on the west, is therefore the highest, 
_ and No. 14 the lowest. 
-It will be noticed that the increase of decayed tubers occurred 
in association with the slope of the land, and hence may be due 
to excessive moisture. 
_ FERTILIZER BELow vs. ABOVE THE SEED. 
An experiment’ last year (covering one-fourth acre), on this 
question, gave no marked difference in favor of either side. It 
has been repeated on plats B 6 and 7, containing one-tenth acre 
each. The rows were furrowed with an ordinary seed plow, by 
passing twice in each: In the odd numbered rows the fertilizer 
was strewn and covered with soil, then the potatoes planted about » 
three inches deep. In the even numbered rows the potatoes were 
covered about an inch deep, the fertilizer strewn in the row and 
the covering completed to about three inches. 
The fertilizer used was compounded of : 
Twenty-five pounds ammonium sulphate. 
Twenty pounds potassium sulphate. 
Twenty-five pounds dissolved bone black. 
Thirty pounds gypsum (ground Nova Scotia rock). 
