20 
BULLETIN 1253, U. S. DEPARTMENT OF AGRICULTURE. 
It is true that when percentage of scald, is calculated, on the basis of 
all cars showing any disease, there is practically no difference between 
the figures for the box and the barrel crop (Tables -i and 5). It is also 
true that in the box crop a larger percentage of the cars examined 
PER CENT 
SCALD 
32 
24 
I 6 
1 
I 
\ 
\ 
*>i r 
^Barre/ Crop 
\ 
\ 
\ 
s 
V 
\ 
l 
i 
•-w 
\ 

Pig. 5. — Percentages of scald by months, for the box and barrel crops for the four crop years, 1917 to 1920, 
inclusive, calculated on the basis of all cars showing scald. 
showed scald than showed it in the barrel crop. For the 1920 crop 
after January 1, the beginning of the scald season, the figure is 42 
per cent for the box crop and 31 per cent for the barrel crop. The 
figures show plainly enough, however, that in cars where it occurred 
scald was more than twice as bad in eastern as in western apples. 
perO 10 
PER CENT OF SCALD 
20 30 
40 5< 
CENT 
423 
40.2 
35.4 
25.0 
23.9 
22.4 
■ 
^^^^ 
BARREL CROP 
WINESAP 
YORK IMPERIAL 
BEN DAVIS 
BALDWIN 
YELLOW NEWTOWN 239 
R.I. GREENING 
BOX CROP 
ROME BEAUTY 27B 
WhlTE PEARMAIN 233 
ARKANSAS BLACK 22.0 
9.5 
7.4 
WINESAP 125 
BEN DAVIS 12.5 
ORTLEY 12.3 
Fig. 6.— Percentages of scald found in important commercial varieties of apples for the box and barrel crops 
for the four crop years, 1917 to 1920, inclusive. The pcicentages are calculated on the basis of all cars 
showing scald. 
With reference to Figure 6 and Table 20, it should be noted that 
the differences there shown, among varieties, are those found at the 
time of inspection, not those which would occur if all the varieties 
were stored under the same conditions for the same length of time. 
YELLOW NEWTOWN 
STAYMAN WINESAP 
^^^^ 
© 
JUJUJU^" 1 
