July 14,1923 
Degeneration Diseases of Irish Potatoes 
73 
Mild mosaic. 
No mosaic. & 
Healthy.c 
No rugose mo¬ 
saic.® 6 
Healthy.® 
Do. 
No rugose mo¬ 
saic.® 
Do.f> 
Do.c 
No leaf roll.® 
Do. 6 
Do.c 
! Mild mosaic ® -.. 
No mosaic 6 . 
Healthv c. 
No rugose mo¬ 
saic.® 6 
Healthy c. 
28 per cent miia 
mosaic. 
No rugose mo¬ 
saic.® 
.do. 6 . 
.CIO.®. 
No leaf roll a .... 
.do. 6 . 
.do.c. 
Six tuber 
units mo¬ 
saic. 
I.do. 
One hill streak 
in part. 
M ntip 
! 
: 
.do. 
Mosaic in part 
in 1 hill. 
None. 
.do. 
_do. 
t 
f: 
tt *0 tn O »"■ »© 00 h (f) 0* 0-. 
« M CO ^ « m«om« 
None. 
.do. 
.do. 
Mosaic m upper leaves of 2 hills 
Mosaic in upper leaves of 2 
hills (field infection). 
None. 
Ho. ...._ _ 
[•c 
) 
J 
i 
11 
11 
11 
11 
6 
9 
6 
on 
IX 
IX 
8 
1- Q. 
2- Q. 
3 - J.. 
Inoc- 
lated 
con¬ 
trols^ 
3 -N. 
I? 1 ? *? *?? 
ug H « « M « **> 
Green Moun¬ 
tain. 
Irish Cobbler 
Rural New 
Yorker. 
Inoculated 
controls.** 
Bliss Tri¬ 
umph. 
Green Moun¬ 
tain. 
f... .do. 
| Irish Cobbler 
Rural New 
, Yorker. 
Green Moun¬ 
tain. 
Irish Cobbler 
Rural New 
. Yorker. 
Mosaic. 
Mosaic. 
.do. 
1 
t- 
1 
! 
Part mosaic. 
Mosaic. 
* 
1 
§ 
i 
Green Moun¬ 
tain. 
Bliss Tri- 
umoh. 
.do./. 
Water con¬ 
trols. 
Irish Cobbler 
\0 00 o 
e .© « •» v 
