ae ee Eel 
1900 | 
Ny 
Ww 
ce 
& 
A 
I 
fungus ; 
alfalfa - 
wt 
ON 
= 
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BOTRYTIS AND SCLEROTINIA Cu fe f 
Diseased plants from the lot just described, which appeared 
to have a pure Botrytis disease, did not have this effect. 
. Water containing abundant conidia poured down into the 
head produced no effect. 
The same result was obtained when the leaf stalks were 
1.—a, sclerotia of Sclerotinia Libertiana: 6, c, sclerotial crust of lettuce 
” small sclerotia from lettuce fungus; ¢, sclerotia of S, Lzdertiana from 
3 J, Sclerotia of Botrytis cinerea. 
cut into so that the conidia came into contact with wounded 
tissue, 
Conidia dusted all over plants in great abundance had no 
effect. 
- Plants treated as in 5 but covered with a bell jar became 
affected in the leaves, which gradually died and rotted 
away, but the stem was intteetad and no typical “ drop” 
resulted. 
