58 BULLETIN 395, U. S. DEPARTMENT OF AGRICULTURE. 
authors, was 3.2 cents per tree. These writers state (p. 38) that for 
these three treatments the cost will range from 3 to 5 cents per tree, 
depending upon the labor conditions, the size of the trees, the con- 
venience of the water supply, and the equipment used. While in 
certain sections where labor is exceptionally expensive the cost may 
somewhat exceed these figures, this estimate appears to be sound. 
Profit from Treatment. 
The profit from spraying appears in the increased amount, the 
superior quality, the better keeping and carrying properties, and 
the enhanced market value of merchantable fruit. Scott and Ayres 
(1910, p. 19-20), working in Georgia, report that from Elbertas which 
were sprayed four times the yield of merchantable fruit was ten times 
that from similar unsprayed trees. By marketing tests they showed, 
further, that the sprayed fruit from this block sold for 50 cents per 
crate more than the fruit from the unsprayed trees. Scott and 
Quaintance (1911, p. 31) report further shipping tests in which 
sprayed Elbertas sold for 75 cents a crate more than similar unsprayed 
fruit of the same variety shipped in the same car. Blake and Farley 
(1911, p. 30) state that the profit secured by spraying at Vineland 
during the season of 1910 was more than $1.50 per tree, while the 
cost of applying the most expensive treatment did not exceed 5 
cents per tree. In the experiments conducted by the writer at Cor- 
nelia, Ga., in 1910 and reported in part by Scott and Quaintance 
(1911, p. 23-26), 70 Elbertas (p. 24) which had received three appli- 
cations of spray, as recommended later, yielded 97.04 per cent of 
merchantable fruit, while on 70 parallel unsprayed trees only 54.11 
per cent of the crop was merchantable. The yield of similarly treated 
Summerours (p. 25) was 85 per cent merchantable, as compared 
with 6.49 per cent from the similar unsprayed trees. An additional 
application on this variety, as recommended later, would have been 
necessary for a more thorough control of scab and rot. The actual 
yields in merchantable fruit from 70 representative trees from each 
of these plats were 113 bushels from sprayed Elbertas, 31.2 bushels 
from unsprayed Elbertas, 115 bushels from sprayed Summerours, 
and 3.5 bushels from unsprayed Summerours. 
The previously reported results obtained by the writer at Cornelia, 
Ga., in 1912 show that even in a season when fungal and insect inju- 
ries were less serious than usual, the standard spray treatments, as 
recommended later, increased the percentage yield of salable sprayed 
fruit, as compared with unsprayed, 17.2 to 18.5 per cent in the case 
of the Carman, 28.8 to 29.1 per cent in the case of the Elberta, and 
6.5 per cent in the case of the Belle, which escaped disease in an 
unusual degree. 
