SPRAYING PEACHES, at 
RESULTS OF SPRAYING EXPERIMENTS AND DEMONSTRA- 
TIONS DURING 1910. 
During the season of 1910 the same experiments were carried out 
as during 1909, which were reported in Circular 120 of the Bureau 
of Entomology and in Bulletin 174 of the Bureau of Plant Industry, 
and in addition the recommendations given in these publications 
were put in effect on a commercial scale to serve as an object lesson 
for growers. During 1909 the experiments made in the Hale orchard 
at Fort Valley, Ga., included the treatment of 1,100 Elberta trees 
for the control of peach scab, brown-rot, and curculio. The self- 
boiled lime-sulphur mixture (S—S—50) plus 2 pounds of arsenate of 
lead was used. 
This combined treatment gave the following results: At picking 
time 95.5 per cent of the fruit on the sprayed block was free from 
brown-rot, 93.5 per cent free from scab, and 72.5 per cent free from 
eurculio. On the unsprayed block only 37 per cent of the fruit was 
free from brown-rot, 1 per cent free from scab, and 2.5 per cent free 
from curculio injury. In packing the fruit for market it was found 
that the yield of merchantable fruit on the sprayed block was 
ten times as great as from the unsprayed block containing the same 
number of trees. 
During the season of 1910 neither the brown-rot nor the, plum 
curculio was so abundant in Georgia as the year previous, and the 
contrast between the sprayed and unsprayed blocks was, therefore, 
not so striking. Nevertheless, the very satisfactory results obtained 
fully substantiated the conclusions previously reached as to the value 
of spraying. 
The work in Georgia was carried out at Fort Valley, Barnesville, and 
at Baldwin. At Fort Valley a block of 1,064 nine-year-old Elberta 
trees was treated in the orchard of the United Orchard Company. 
In addition to numerous experiments planned to show the effect of 
treatments at different times and with different mixtures, the demon- 
stration treatment was put in effect on a block of 848 Elberta trees, 
a similar number being left unsprayed for purposes of comparison. 
The trees were sprayed (1) as the calyxes were shedding, April 1, 
with 2 pounds of arsenate of lead and 3 pounds of lime in each 50 gal- 
lons of water; (2) two to three weeks later, April 19 and 20, with 
8-8-50 self-boiled lime-sulphur and 2 pounds of arsenate of lead; 
(3) on June 17, about a month before the fruit ripened, with self- 
boiled lime-sulphur alone. 
In order to determine the effect of the treatments, the fruit at pick- 
ing time (July 12 to 15) was gathered from 68 trees in the sprayed 
block and from 63 trees in the unsprayed block. This fruit was 
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