FLORIDA STATE HORTICULTURAL SOCIETY. 
y 
36 
Mr. McClung.—Is this mould respon¬ 
sible for the damage that is attributed to 
the white fly? 
Mr. Waite.—Yes sir. 
Mr. Bell.—How many oranges did you 
wash and what was the expense of wash¬ 
ing them ? 
Mr. Waite.—We have cleaned as many 
as fifty boxes in fifteen minutes, with 
three men at $1.25 per day. We washed 
our entire crop of grape fruit and oranges 
not cleaned by the snail. 
Mr. Longley.—I would like to ask 
about the scale and white fly: Is the 
white fly more destructive to one kind 
of fruit than to another? 
Mr. Waite.—It is more destructive to 
oranges than grapefruit, but is worse on 
tangerine, mandarin and lemon, than any 
of the others. 
Mr. Gist.—I would like to ask what 
steps I should take if the white fly should 
appear on my grove. Should I spray or 
use fungi and snail? 
Mr. Waite.—I would advise spraying 
the first trees showing any sign of the 
fly, in this way you may be able to hold 
it in check for several years, but it would 
pay to introduce the fungi and snail as 
soon as you see that you have the fly well 
started in your grove, but not before, for 
foilage partially covered with the fungi 
may contain plenty of pupa which may 
mature in a few days and fly to other 
trees not stocked with the fungi. 
Maj. Healey—I have sought infor¬ 
mation on the origin of the white fly and 
am told that it was brought to this coun¬ 
try from China. It might be we could 
gather some information from there that 
would aid us in its extermination. 
Mr. Sampson.—I would ask if the ex¬ 
termination of the white fly is dependent 
on fungi, snails, or spraying, and if there 
would be a full crop the third year. 
Mr. Hart.—I would like Mr. Waite’s 
opinion as to how the spraying can be 
done on bearing trees, and whether or 
not it would give us a good full crop the 
third year or a normal one each year. 
Mr. Waite.—Six years ago I took 
charge of the Manatee Lemon Go’s groves 
in Manatee county. The young grove 
of 225 acres joined another grove that 
was badly infested with white fly. Our 
trees were very small, from one to two 
feet high, we sprayed that portion near¬ 
est that grove the first winter, and as we 
noticed specimens of the fly farther out 
in our grove, from year to year, so we 
increased the area. For the first four 
years we kept the fly down to such an 
extent that our trees were always glossy, 
and only an occasional tree would be 
black from the sooty mould. As the trees 
became larger it was more difficult to 
wet the entire foilage, and the Fly would 
become numerous by October, and por¬ 
tions of the fruit would be black, but 
these winter sprayings seemed to clean 
the trees enough so that they would bloom 
and set a very nice crop of fruit. Our 
success was fully as good with old seed¬ 
lings. We did not spray during the past 
winter, wishing to see what results 
would follow the introduction of the 
brown and red fungi, these only work 
during the rainy season or foggy weath¬ 
er during the fall and winter. By spray¬ 
ing we have increased our crop of fruit 
each year. It requires more intelligent 
labor than the ordinary “Darkey” to do 
successful spraying as one leaf missed 
may have hundreds of eggs. 
,Mr. Brown.—What are the surround¬ 
ing dangers of the white fly? Upon 
what does it feed? 
