fom 
RESULTS OF EXPERIMENTS. 
85 
TaBLE XIX.—WNumber of diseased trees planted of each variety and the number dying in 
orchards 1 and 2. 
SOR LUIpeHa Ingram trees. Gano trees. | Collins trees. Total. 
Number of orchard. 
Planted.| Died.| Planted.) Died.) Planted.) Died.) Planted.) Died.| Planted.| Died. 
1G BONERS hate ae oe eeeee 16 1 16 2 32 0 32 5 96 8 
SG oe SES wine 45 8 | 31 7 27 4 36 3 139 22 
otal eee: - 61 9 | 47 9 59 4 68 8 235 30 
| 1 
TaBLE XX.—Numober of trees dying in orchard 3 during two years’ growth. 
Trees 
Condition of roots. pienied Trees dead in 1907. | Trees dead in 1908. | Trees alive in 1908. 
in 1907. 
Number. | Number. | Per cent. | Number. | Per cent. | Number. | Per cent. 
Heal thie eres teeerer ee ee 572 182 31.8 9 | 1.6 381 66.6 
CII ls suas Bee eee ne coe te 177 60 33.9 6 3.4 111 62.7 
1B BYTE RAS eects es eng ree 359 69 19.2 21 | 5.9 269 74.9 
TaBLE XXI.—Results of experiments showing the susceptibility of different varieties of 
apple trees to crown-gall and hairy-root. 
Variety. 
Wrealthyz=2-— ==: 
Yellow Transparent. 
Wolf River........-- 
MamMeuses ease 
Oldenburg.......... 
MUISSOUFIC2 = secne8 2 
York Imperial... ..- 
Miniden<s e222. 3 
GiibineS\: aa aes 
Northwestern 
Greening. 
’ Scott Winter........ 
Yellow Bellflower. -. 
Northern Spy....-.- 
Bene a WiSse ens ces 
Walbridge.-2...... 
MAES Se eis 
>. 
C saad ENGR 
rown- ‘ Hairy- : gall and | Number 
gall. Variety. root. Variety. hairy- | of trees. 
root. 
Per cent. Per cent. Per cent. 
34.4 || Ben Davis......--. 29.9 || Wolf River......-- 46.4 660 
27.1 || Wolf River........ ZENS) |llaWiealthyeecesseeeee 43.3 6, 221 
21.1 |{ Northern Spy...-.- ON el PB enkDaviseess-ee= 36.1 2,870 
19.1 ELUMESes ee Ce 15.3 |; Yellow Transpar- 34.0 2,114 
NS Ill Ces sen sacsoces 12.6 ent. 
17.7 || Northwestern 10.5 |) Maiden Blush...... 26.4 1, 698 
15.5 Greening Northern Spy..---- 26.0 4,166 
15: 15|| {Red Jumes.. 5: 1Ok50 ||P Missouria ss) = os 25.9 5,591 
15208 ||Missourigs. 5. 45-2 10.4 || Fameuse..........- 25.8 552 
14.8 |} Scott Winter...... O3"i -RedeJune== =e ee DOO 2,152 
14.2 amboeeeeen ose. Os3n ll PGanOmaees seer ease 24.3 2, 284 
11.9 || Yellow Bellflower. 9.2 || Oldenburg......--. 24.0 1, 883 
ALE /iall | WCAG yee S90 Grimeseae aaa 23.7 2,477 
sls |aWWiellbrid ge: = 22 =- Soo i Ram bowers see 23.5 1,148 
9.9 || York Imperial... - Srcr|| Jonathani-=ssese5- 21.0 1, 668 
9.8 || Fameuse..._...-..- Ho WW AWAD. sa Se eso 5e 20. 4 2, 287 
8.4 || Maiden Blush..... 7.3 || Northwestern 18.2 3, 963 
Cath MN Wibild5655sacose 7.0 Greening. 
SHIM so Socs555e 6.9 |} York Imperial... .. 18.1 4,073 
7.5 || Yellow Transpar- 659) |e Salomess. --=-——- 18.0 623 
7.3 ent. Scott Winterssseeee 16.8 613 
6.9 || Oldenburg........ 6:33 | gvbimcler see - 555 asl 16.8 1, 251 
632; | Jonathane---o-- = SO) PNG hate Se eee 16.6 1,497 
Se2 a |e Marthaec 5 esses. 5.9 || Yellow Bellflower. - 16.5 546 
4° 8:||) Wihitney.-- 3. < -- 5SuOnaWial DEG Gems sas ee 14.1 2,328 
iBaldiwinteees ses Ae Martha sees 10.7 1, 286 
In Table XXI in the first two columns is given the percentage of 
trees of 24 varieties diseased with crown-gall, arranged in the order 
of their susceptibility, from the highest to the lowest; in the third 
and fourth columns is given the percentage of the same varieties dis- 
eased with hairy-root, similarly arranged; in the fifth and sixth col- 
186 
