104 
FLORIDA STATE HORTICULTURAL SOCIETY 
and water cracks immediately and drops 
off. I happened to see that with my own 
eyes. It simply dries and breaks and 
cracks and the first wind blows it all off 
and it takes the smut off with it. 
Mr. Skinner: Do you think enough 
of this to try it, Mr. Yothers? 
Mr. Yothers : It seems to me if they 
go to the trouble of spraying, they might 
just as well spray with an insecticide that 
will kill the fly as well as remove the 
sooty mold. I am not disputing the fact 
that flour and w*ater will remove the 
sooty mold; I don't know anything about 
it, but I do know that it will kill some 
of the mites, the red spider, for instance. 
It has been found to be very efficacious 
in the State of Washington in spraying 
mites, but I doubt if it will have any 
detrimental effect on the whitefly. I do 
know that if you will use the oil solution 
every week it will remove the sooty mold 
and also kill the fly. The oil solutions 
are rather inexpensive, and I doubt if 
they will cost more than the water and 
flour wash. Just now I have forgotten 
the formula of the flour and water as 
used on the mites, but it is about as ex¬ 
pensive as the oil emulsion. 
