i COLORING SATSUMA ORANGES IN ALABAMA, 3 
‘method described by Rose * on oranges from both Mobile and Bald- 
win Counties. Table 1 gives the results of tests on samples of oranges 
collected between October 4 and 15 from different groves. They rep- 
resent fruit grown under somewhat different methods of culture and 
‘in some cases quite different soil conditions. Each sample consisted 
of 12 average oranges taken from as many different trees. 
TABLE 1.—Determinations of solids, acidity, and color of oranges from different 
groves in Baldwin and Mobile Counties, Ala., picked October 6 to 15. 
EP Solids- r 
bs Date Citric Soluble - Yellow 
Locality and sample. collected.| acid. solids. Ree color. 
_ Mobile geek Per cent.| Per cent. Per cent. 
1 DE as a a SEL Rae = pate ent oe a ae Oct. 6 0. 82 8. 00 9.7 15 
= No. : ab LE ee a ee eect heme 1.16 10. 00 8.6 0 
[2 ot. PE le es SSL se ee ee eee PO = 88 9. 00 10. 2 10 
USVDE, Las. ets De ES eek oe eae oe a 022-6 - 86 8. 00 9.3 0 
a es 3S EA ee ee Oct. 9 79 10.15 12.8 20 
2 Ob 2522-0. ES eee ee ee r dossc-¢ . 88 9. 72 11.0 30 
EOS ee ee ee ee ee oe ~Sd 025522 1.00 9, 22 9.2 5 
Baldwin Seg 
1) Tis leeks ee SS ee ae aS Oe ee es Octe. 3 1,14 9. 75 8.5 0 
SOG. Sk ee ey ee Se ee ee Ss Oss © 1.08 8. 81 8.1 0 
Sete ee eee ee ee ot PA ee. Oct. 4 1.05 9. 22 8.7 0 
IS ch et ie See ee Se ee ee ee See Oct 6 1. 28 9.00 7.0 0 
iecBs 2.2 ue ei ee ee eee Oct. 7 1. 08 8. 74 8.1 0 
INTO. BA ee: SS SN eee Ee ee Fee Ole . 90 9.68 10.7 5 
LTS /L2 3S ae ee ee eee = Ors. 1. 06 8.67 8.2 0 
Nb ers nee eeeiee Sn eR Ne ele -220@- 5.2 - .94 9.68 10.3 () 
ip eee eee seen oe RE sa Ce Soe cod Oct. 9 1.07 8.15 7.6 10 
BY Os oa os oe a eA re ae a Oct. 13 . 96 9. 35 9.8 5 
2S) DAM bs ot 2) sap eee ge 2 eee ee aed ee - = dors; 115 10.35 9.0 5 
De Te SSS Se Se Oct. 15 76 9, 22 12-1 20 
nie TRA tee SO eee A= One 515 9, 22 8.0 | 10 
It will be noticed in Table 1 that with but two exceptions all the 
oranges proved to be at or above the ratio of 1 part citric acid to 8 
parts soluble solids. The greenest colored of these fruits on being 
cut open showed a full rich golden yellow color of the flesh, and they 
were entirely satisfactory to the taste, in most cases being sweet and 
full of juice. Further results with samples taken from time to time 
from two groves are given in Tables 2 and 3. 
TABLE 2.—Determinations of solids, acidity, and color of oranges from a single 
grove, picked at intervals from September 13 to November 8. 
ue Citric | Soluble | SOHdS- | yentow 
: acid. solids. ere color. 
atio. 
[ Per cent. | Per cent. Per cent. 
- SUIDEN DEP Tsk. Se ola es 2 oe ee Hee 9. 00 oul 0 
LS UDF S25 Skee BS oe ee ed ee ee eee Oe 1.15 9.75 8.5 0 
(LT Bec NR oy 5 Dd ite ST ig a cp 115 10.15 Ses 10 
LITER Loe 8 set Ae ES OR ae to De noe are ea 99 11. 22 11.3 20 
_ UUEGES Tl Pe Ee ee eee ee eee ee S4 13.35) 100 
11. 20 | 
On September 13 the oranges were entirely green in color, but 
on being cut open the flesh was seen to be yellow with a greenish 
tint and was not palatable. By October 3, while the color of the 
peel was still green, it had begun to turn light in spots, the color 
*Rose, R. E. Immature citrus fruit. Laws, rules, and regulations. Instructions to 
_ growers for applying the “ratio of acid to total-solids test.” Revised Aug. 20, 1918. 
Tallahassee, 
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