DISEASES OF APPLES ON THE MARKET. 19 
Table 20. — Summary, barrel crop, 1917-1920, scald by varieties, by months. 
December. 
January. 
February. 
March. 
Variety. 
Cars. 
Per 
cent. 
Cars. 
Per 
cent. 
Cars. 
Per 
cent. 
Cars. 
Per 
cent. 
1 
50.0 
1 
20 
13 
1 
100 
Baldwin.. . . _. 
4 
3 
11.0 
3.6 
29 8 
Ben Davis 
1 
25.0 
45 8 
Delicious 
15 
Gano 
Grimes Golden 
1 
80.0 
Peck Pleasant. 
1 
6 
83 
Rhode Island Greening.. . _. 
4 
26.7 
4 
8.7 
29 8 
"Russet" .-- 
Stark - . 
1 
1 
1 
1 
2 
12 
2 
2 
10 
Stayman Winesap . . .. 
2 
45.5 
100 
Sweetheart. -.- . _. 
5 
Tolman Sweet 
90 
Tompkins King 
30 
Winesap ... 
1 
4.0 
8 
48.0 
43.0 
38 5 
York Imperial. . . 
1 
15.0 
12 
37.1 
20 
43.4 
38.5 
Yellow Transparent 
Mixed varieties . . ... . 
1 
10.0 
3 
16.0 
14 
21.0 
9 
17 1 
U nknown varieties _ _ . 
Total or average,. ... . .. 
3 
35.0 
22 
30.9 
55 
31.4 
73 
36.4 
April. 
May. 
June. 
Total. 
Variety. 
Per 
cent. 
Per 
cent. 
Per 
cent. 
Per 
cent. 
Arkansas (Mammoth Black Twig). ._ .. 
2 
38 
27 
1 
3 
15 
24 
11 
35 
39 
75.0 
9 
3 
11.1 
37.6 
5 
5 
42.4 
33.4 
25 
Ben Davis 
2 
22.5 
35.4 
Delicious . ._ ... 
15.0 
3 
19.0 
19 
Grimes Golden 
80.0 
Peck Pleasant . 
83.0 
Rhode Island Greening 
1 
15.0 
22.4 
"Russet" 
1 
13.0 
13.0 
Stark 
10.0 
63.7 
Sweetheart. 
5.0 
Tolman Sweet, 
90.0 
Tompkins King.. 
30.9 
Winesap 
3 
6 
42.3 
28.0 
42.9 
Yellow Newtown 
3 
6.0 
23.2 
40.0 
Yellow Transparent 
1 
25.0 
25.1 
8 
45.3 
4 
1 
18.5 
70.0 
24.0 
Unknown varieties 
70.3 
Total or average 
33 
28.5 
19 
29.2 
3 
23.1 
208 
32.0 
Including all varieties that showed the disease, the average per- 
centage of scald in the box crop was 15.6 (Table 19), in the barrel crop 
32.8 (Table 20). (See also Tables 21 and 22 and figs. 5, 6, and 7.) 
If only those varieties be included which are common to both crops, 
the average percentages were 14.2 and 38.1, respectively (Table 
21). That is to say, when percentage of scald is calculated on the 
basis of cars in which it appeared, the figure for the barrel crop is 
more than twice as large as that for the box crop. 
These figures, particularly as they appear in Table 21, may mean 
that the eastern crop is more susceptible to scald than the western; 
more probably they mean that the barrel, so far as ventilation and 
scald are concerned, is a poor package in which to store apples. 
