6 BULLETIN 645, U. S. DEPARTMENT OF AGRICULTURE. 
TaBLe 2.—VPercentages of various grades of oranges and grapefruit shipped 
from Florida to New York City and other markets during the season of 
1915-16. 
Oranges. Grapefruit. 
Market. 
First |Second|} Third | Total First |Second| Third | Total 
grade. | grade. | grade. | boxes. | grade. | grade. | grade. | boxes. 
NewavOonk Crbyie. see eae 35.56 | 44.33 | 20.10 | 868,541 | 34.43 | 45.61 20.00 272, 621 
Other marketses-eoaee eke ae 8.30 | 44.57 | 47.13 |5, 096, 817 8.85 | 36.2 54.9 | 1,544,929 
Totals and weighted per- 
centages ae eek | 12.39 | 44.53 | 43.08 5,965,358 | 12.67 | 37.62 | 49.69 | 1,817,550 
i | | 
Taking into consideration all sources of information regarding 
oranges and grapefruit shipped out of Florida, the conclusion is 
reached that for the purpose of this bulletin the percentages of fruit 
in the first, second, and third grades approximate 138, 41, and 46, 
respectively. 
RAISING THE GRADE OF FRUIT BY SPRAYING. 
Since by no means all Florida fruit is graded so well as that 
shipped to New York, the problem of raising the standard is an:im- 
portant one. Is it worth while? Will it pay? From the results of 
work in Florida it may be asserted confidently that it is worth while 
and that it will pay in a very large number of Florida groves. Table 
3 gives the percentages of the grades of fruit shipped from the same 
erove during 1914, 1915, 1916 and during 1917, up to January 15. 
In 1914 the small amount of spraying done came too late to prevent 
blemishes caused by rust mites. In 1915 and 1917 the spraying was 
done at the proper time, but in 1916 the application was made a little 
too late to produce the best results. The data resulting from this 
experimental work are so striking that comment is unnecessary. 
TABLE 3.—Result of spraying upon the percentages of grapefruit in the various 
grades. 
Year and treatment. 
1914 | 1915 1916 1917 
Grade of fruit. ae 
Sprayed 
Not Well too late Well 
sprayed. | Sprayed. | for best | sprayed. 
results. 
BETTS Geos Oo seat em Se UN ee ee a a 5 le peer | AF 34.3 15.8 33.7 
SOCOnGi ps ois pee Soa Bee Na er el ie eae eae 15.8 51.5 51.6 46.3 
RIG See Se ei I as eee Tete | eta en wie epi ee 50.0 10.2 pas! 14.2 
TONG) Bhp) eS uae lee x RMN ee eS AR recone ace Fey Lace hs se CR ah 31.5 shi 15.3 5.9 
In a second grapefruit grove during the season of 1913-14, when 
no spraying was done, the percentages of fruit in the four grades 
ran 0, 13.8, 65.5, and 20.8, respectively. During the season of 1914-15 
e 
