STANDARDS FOR FRUITS AND VEGETABLES 45 
UNITED STATES STANDARDS FOR CITRUS 
FRUITS * 
(Hffective Oct. 9, 1932) 
INTRODUCTION. 
These standards apply only to the common or sweet: 
orange group, grapefruit, and tangerines, and other 
varieties belonging to the mandarin group. 
Numbers and letters in parentheses following grade: 
terms indicate where such terms are defined on pages 
47 to 51, inclusive, under Definitions of Terms. 
GRADE REQUIREMENTS 
U.S. Faney shall consist of citrus fruits of similar 
varietal characteristics (1), which are well colored 
(2), irm (3), well formed (4), mature, and of smooth 
texture (5); free from ammoniation, bird pecks, 
bruises, buckskin, creasing, cuts which are not healed, 
decay, growth cracks, scab, split navels, spray burn, 
and undeveloped or sunken segments, from injury 
(6) by black or unsightly discoloration (6-7), green 
spots (6a), rough and excessively wide or protruding 
navels (6b), scars (6c), scale (6d), thorn scratches 
(6e), and from damage (10) caused by dirt or other 
foreign materials (10), dryness (10b), sprouting 
(10), sunburn (10h), disease, insects, or mechanical 
or other means (10). (See Tolerances pp. 51 to 53.) 
In this grade not more than 10 percent in the ag- 
gregate of the surface of each fruit may be affected 
with discoloration (7). 
U.S. No. 1 shall consist of citrus fruits of similar 
varietal characteristics (1) which are fairly well 
colored (8), firm (3), well formed (4), mature, and 
of fairly smooth texture (9); free from bruises, buck- 
skin, creasing, cuts which are not healed, decay, 
growth cracks, spray burn, undeveloped or sunken seg- 
ments, and from damage (10) caused by ammonia- 
tion (10a), bird pecks (10), black or unsightly dis- 
coloration (7 and 10), dirt or other foreign mate- 
rials (10), dryness (10b), green spots (10c), scab 
(10d), scale (10e), scars (10f), split or rough or pro- 
®These standards supersede United States Standards for 
Florida Citrus Fruits and United States Standards for Texas 
Citrus Fruits issued Aug. 7, 1930. They do not apply to 
California and Arizona citrus fruits for which separate 
United States standards are. issued. 
38579°—34——-4 
