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OFFICIAL GRAIN STANDARDS OF THE UNITED
STATES
Grades for Wheat, Sorghum, Corn, Oats, Barley, and Soybeans
WHEAT
| Grade |
Minimum test weight per bushel |
Maximum limits of - |
| |
Wheat
of other classes2 |
| Hard Red Spring
wheat or White Club wheat |
All other classes
and sub-classes |
Heat-damaged
kernels |
Damaged kernels
(total) |
Foreign material |
Shrunken and
broken kernels |
Defects
(total)1 |
Contrasting
classes |
Wheat of other
classes (totals)3 |
| |
Pounds |
Pounds |
Percent |
Percent |
Percent |
Percent |
Percent |
Percent |
Percent |
| U.S. No. 1 |
58.0 |
60.0 |
0.2 |
2.0 |
0.4 |
3.0 |
3.0 |
1.0 |
3.0 |
| U.S. No. 2 |
57.0 |
58.0 |
0.2 |
4.0 |
0.7 |
5.0 |
5.0 |
2.0 |
5.0 |
| U.S. No. 3 |
55.0 |
56.0 |
0.5 |
7.0 |
1.3 |
8.0 |
8.0 |
3.0 |
10.0 |
| U.S. No. 4 |
53.0 |
54.0 |
1.0 |
10.0 |
3.0 |
12.0 |
12.0 |
10.0 |
10.0 |
| U.S. No. 5 |
50.0 |
51.0 |
3.0 |
15.0 |
5.0 |
20.0 |
20.0 |
10.0 |
10.0 |
U.S. Sample
Grade ... U.S. Sample Grade shall be Wheat that:
(a) Does not meet the requirements for U.S. Nos. 1, 2, 3, 4, or 5; or
(b) Has a musty, sour, or commercially objectionable foreign odor (except
smut or garlic odor); or
(c) Is heating or of distinctly low quality; or
(d) Contains 2 or more rodent pellets, bird dropping, or equivalent quantity
of other animal filth; or 2 or more castor beans (Ricinus communis
L.), 3 or more crotalaria seeds (Crotalaria spp.), 1 or more
pieces of glass, 4 or more stones or any number of stones which have an
aggregate weight in excess of 0.1 percent of the sample weight, 4 or more
particles of an unknown foreign substance(s) or a commonly recognized
harmful or toxic foreign combination; or |
(e) 5 Total 4; or
(f) 32 or more Insect-damaged kernels per 100 grams.
1 Includes damaged kernels (total), foreign material, and shrunken and
broken kernels.
2 Unclassed wheat of any grade may contain not more than 10.0 percent
of wheat of other classes.
3 Includes contrasting classes.
4 Includes any combination of animal filth, castor beans, crotalaria seeds,
glass, stones, or unknown foreign substance. |
SORGHUM
| Grade |
Minimum test weight per bushel |
Maximum limits of - |
|
Damaged kernels |
Broken kernels and foreign material |
| Heat-damaged
kernels |
Total |
Foreign material
(part of total) |
Total |
| |
Pounds |
Percent |
Percent |
Percent |
Percent |
| U.S. No. 1 |
57.0 |
0.2 |
2.0 |
1.0 |
3.0 |
| U.S. No. 2 |
55.0 |
0.5 |
5.0 |
2.0 |
6.0 |
| U.S. No. 31 |
53.0 |
1.0 |
10.0 |
3.0 |
8.0 |
| U.S. No. 4 |
51.0 |
3.0 |
15.0 |
4.0 |
10.0 |
U.S. Sample Grade ... U.S. Sample Grade shall be Sorghum that:
(a) Does not meet the requirements for U.S. Nos.
1,2,3, or 4: or
(b) Has a musty, sour, or commercially objectionable foreign odor (except
smut odor); or
(c) Is badly weathered, heating, or distinctly low quality; or
(d) Contains 10 or more rodent pellets, bird droppings, or equivalent
quantity of other animal filth; or 2 or more castor beans (Ricinus communis
L.), 3 or more crotalaria seeds (Crotalaria spp.), 2 or more pieces of
glass, 8 or more stones2, 4 or more particles of an unknown foreign
substance(s) or a commonly recognized harmful or toxic foreign substance, 8
or more cockleburs (Xanthium spp.). |
1 Sorghum which is distinctly
discolored shall not grade higher than U.S. No. 3.
2 Aggregate weight of stones must also exceed 0.2 percent of the sample
weight.Sorghum is divided into four classes: Sorghum, Tannin
sorghum, White sorghum, and Mixed sorghum. |
CORN
| Grade |
Minimum test weight per bushel |
Maximum limits of - |
|
Damaged kernels |
Broken kernels and foreign material |
| Heat-damaged
kernels |
Total |
|
| |
Pounds |
Percent |
Percent |
Percent |
| U.S. No. 1 |
56 |
0.1 |
3.0 |
2.0 |
| U.S. No. 2 |
54 |
0.2 |
5.0 |
3.0 |
| U.S. No. 3 |
52 |
0.5 |
7.0 |
4.0 |
| U.S. No. 4 |
49 |
1.0 |
10.0 |
5.0 |
| U.S. No. 5 |
46 |
3.0 |
15.0 |
7.0 |
U.S. Sample Grade ... U.S. Sample Grade shall be Corn that:
(a) Does not meet the requirements for U.S. Nos. 1,2,3,4, or 5: or
(b) Contains stones which have an aggregate weight in excess of 0.1 percent
of the sample weight, 2 or more pieces of glass, 3 or more crotalaria seeds
(Crotalaria spp.), 2 or more castor beans (Ricinus
communis L.), 4 or more particles of an unknown |
foreign substance(s) or a commonly recognized harmful or toxic substance(s),
8 or more cockleburs (Xanthium spp.) or similar seeds singly
or in combination, or animal filth in excess of 0.20 percent in ,000 grams:
or
(c) Has a musty, sour, or commercially objectionable foreign odor: or
(d) Is heating or otherwise of distinctly low quality. |
OATS
| Grade |
Minimum limits of- |
Maximum limits of - |
|
Test weight per bushel |
Sound oats |
Heat-damaged
kernels |
Foreign Material |
Wild oats |
| |
Pounds |
Percent |
Percent |
Percent |
Percent |
| U.S. No. 1 |
36.0 |
97.0 |
0.1 |
2.0 |
2.0 |
| U.S. No. 2 |
33.0 |
94.0 |
0.3 |
3.0 |
3.0 |
| U.S. No. 3 |
30.0 |
90.0 |
1.0 |
4.0 |
5.0 |
| U.S. No. 4 |
27.0 |
80.0 |
3.0 |
5.0 |
10.0 |
U.S. Sample Grade ... U.S. Sample Grade shall be Oats that:
(a) Does not meet the requirements for U.S. Nos. 1,2,3,or 4: or
(b) Contains 8 or more stones which have an aggregate weight in excess of
0.2 percent of the sample weight, 2 or more pieces of glass, 3 or more
crotalaria seeds (Crotalaria spp.), 2 or more castor beans (Ricinus
communis L.), 4 or more particles of an unknown foreign substance(s)
or a commonly recognized harmful or toxic foreign substance(s), 8 or more
cockleburs (Xanthium spp.) or similar seeds singly or in
combination, 10 or |
more
rodent pellets, bird droppings, or equivalent quantity of other animal filth
per 1-1/8 to 1-1/4 quarts of oats; or
(c) Has a musty, sour, or commercially objectionable foreign odor (except
smut or garlic odor); or
(d) Are heating or otherwise of distinctly low quality.
1 Oats that are slightly weathered shall not
grade higher than U.S. No. 3.
2 Oats that are badly stained or materially weathered shall be graded not
higher than |
BARLEY
| Grade |
Minimum limits of- |
Maximum limits of - |
|
Test weight per bushel |
Sound barley |
Damaged kernels |
Heat-damaged
kernels |
Foreign Material |
Broken kernels |
Thin Barley |
| |
Pounds |
Percent |
Percent |
Percent |
Percent |
Percent |
Percent |
| U.S. No. 1 |
47.0 |
97.0 |
2.0 |
0.2 |
1.0 |
4.0 |
10.0 |
| U.S. No. 2 |
45.0 |
94.0 |
4.0 |
0.3 |
2.0 |
8.0 |
15.0 |
| U.S. No. 3 |
43.0 |
90.0 |
6.0 |
0.5 |
3.0 |
12.0 |
25.0 |
| U.S. No. 4 |
40.0 |
85.0 |
8.0 |
1.0 |
4.0 |
18.0 |
35.0 |
| U.S. No. 5 |
36.0 |
75.0 |
10.0 |
3.0 |
5.0 |
28.0 |
75.0 |
U.S. Sample Grade ... U.S. Sample Grade shall be Barley that:
(a) Does not meet the requirements for U.S. Nos. 1,2,3,4, or 5: or
(b) Contains 8 or more stones or any number of stones which have an
aggregate weight in excess of 0.2 percent of the sample weight, 2 or more
pieces of glass, 3 or more crotalaria seeds (Crotalaria spp.), 2 or more
castor beans (Ricinus communis L.), 4 or more particles of an unknown
foreign substance(s) or a commonly recognized harmful or toxic substance, 8
or more cockleburs (Xanthium spp.) or similar seeds singly or in
combination, 10 or more rodent pellets, bird droppings, or equivalent
quantity of other animal filth per 1-1/8 to 1-1/4 quarts of barley; or |
(c) Has a musty, sour, or
commercially objectionable foreign odor (except smut or garlic odor); or
(d) Is heating or otherwise of distinctly low quality.
1 Includes heat-damaged kernels.
Injured-by-frost kernels and injured-by-mold kernels are not considered
damaged kernels.
2 Barley that is badly stained or materially weathered shall be graded not
higher than U.S. No. 4. Six-rowed
Barley, Two-rowed Barley, and Barley. |
SOYBEANS
| Grade |
Minimum test weight per bushel |
Maximum limits of - |
|
Damaged kernels |
Foreign material |
Splits |
Soybeans of other colors |
| Heat-damaged
kernels |
Total |
| |
Pounds |
Percent |
Percent |
Percent |
Percent |
Percent |
| U.S. No. 1 |
56.0 |
0.2 |
2.0 |
1.0 |
10.0 |
1.0 |
| U.S. No. 2 |
54.0 |
0.5 |
3.0 |
2.0 |
20.0 |
2.0 |
| U.S. No. 31 |
52.0 |
1.0 |
5.0 |
3.0 |
30.0 |
5.0 |
| U.S. No. 42 |
49.0 |
3.0 |
8.0 |
5.0 |
40.0 |
10.0 |
U.S. Sample Grade ... U.S. Sample Grade shall be Barley that:
(a) Does not meet the requirements for U.S. Nos. 1,2,3, or 4: or
(b) Contain 4 or more stones which have an aggregate weight in excess of 0.1
percent of the sample weight, 1 or more pieces of glass, 3 or more
crotalaria seeds (Crotalaria ssp.), 2 or more castor beans (Ricinius
communis L.), 4 or more particles of an unknown foreign substance(s)
or a commonly recognized harmful or toxic foreign substance(s), 10 or more
rodent pellets, bird droppings, or an equivalent quantity of other animal |
filth
in a 1,000 grams of soybeans; or
(c) Contain 11 or more animal filth, castor beans, crotalaria seeds, glass,
stones, or unknown foreign substance(s) in any combination; or
(d) Have a musty, sour, or commercially objectionable foreign odor (except
garlic odor); or
(e) Are heating or otherwise of distinctly low quality. |
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