Regulations last checked for updates: May 16, 2024

Title 7 - Agriculture last revised: Nov 16, 2024
§ 361.5 - Sampling of seeds.

(a) Sample sizes. As provided in § 361.4(b), samples of seed will be taken from each lot of seed being imported for seeding (planting) purposes to determine whether any seeds of noxious weeds listed in § 361.6(a) are present. The samples shall be drawn in the manner described in paragraphs (b) and (c) of this section. Unused portions of samples of rare or expensive seeds will be returned by APHIS upon request of the importer.

(1) A minimum sample of not less than 1 quart shall be drawn from each lot of agricultural seed; a minimum sample of not less than 1 pint shall be drawn from each lot of vegetable seed, except that a sample of 1/4 pint will be sufficient for a vegetable seed importation of 5 pounds or less. The minimum sample shall be divided repeatedly until a working sample of proper weight has been obtained. If a mechanical divider cannot be used or is not available, the sample shall be thoroughly mixed, then placed in a pile; the pile shall be divided repeatedly into halves until a working sample of the proper weight remains. The weights of the working samples for noxious weed examination for each lot of seed are shown in column 1 of table 1 of this section. If the lot of seed is a mixture, the following methods shall be used to determine the weight of the working sample:

(i) If the lot of seed is a mixture consisting of one predominant kind of seed or a group of kinds of similar size, the weight of the working sample shall be the weight shown in column 1 of table 1 of this section for the kind or group of kinds that comprises more than 50 percent of the sample.

(ii) If the lot of seed is a mixture consisting of two or more kinds or groups of kinds of different sizes, none of which comprises over 50 percent of the sample, the weight of the working sample shall be the weighted average (to the nearest half gram) of the weight shown in column 1 of table 1 of this section for each of the kinds that comprise the sample, as determined by the following method:

(A) Multiply the percentage of each component of the mixture (rounded off to the nearest whole number) by the sample sizes shown in column 1 of table 1 of this section;

(B) Add all these products;

(C) Total the percentages of all components of the mixtures; and

(D) Divide the sum in paragraph (a)(1)(ii)(B) of this section by the total in paragraph (a)(1)(ii)(C) of this section.

(2) It is not ordinarily practical to sample and test small lots of seed offered for entry. The maximum sizes of lots of each kind of seed not ordinarily sampled are shown in column 2 of table 1 of this section.

(3) The maximum sizes of lots of each kind of seed allowed entry without sampling for sowing for experimental or breeding purposes as provided in § 361.4(a)(4) are shown in column 3 of table 1 of this section.

Table 1

Name of seed Working weight for noxious weed examination
(grams)
(1)
Maximum weight of seed lot not ordinarily sampled
(pounds)
(2)
Maximum weight of seed lot permitted entry for experimental or breeding purposes without sampling
(pounds)
(3)
VEGETABLE SEED:
Artichoke5002550
Asparagus5002550
Asparagusbean5002550
Bean25200
Garden500100500
Lima50025200
Runner50025200
Beet3002550
Broadbean50025200
Broccoli50510
Brussels sprouts50510
Burdock, great1501050
Cabbage50510
Cabbage, Chinese50510
Cabbage, tronchuda100510
Cantaloupe (see Melon)
Cardoon5002550
Carrot50510
Cauliflower50510
Celeriac25510
Celery25510
Chard, Swiss3002550
Chicory50510
Chives50510
Citron5002550
Collards50510
Corn, sweet50025200
Cornsalad50510
Cowpea50025200
Cress, garden50510
Cress, upland35510
Cress, water25510
Cucumber5002550
Dandelion35510
Dill50510
Eggplant50510
Endive50510
Gherkin, West India1602550
Kale50510
Kale, Chinese50510
Kale, Siberian80510
Kohlrabi50510
Leek50510
Lettuce50510
Melon5002550
Mustard, India5025100
Mustard, spinach50510
Okra5002550
Onion50510
Onion, Welsh50510
Pak-choi50510
Parsley50510
Parsnip50510
Pea50025200
Pepper150510
Pumpkin5002550
Radish3002550
Rhubarb300510
Rutabaga50510
Sage1502550
Salsify3002550
Savory, summer35510
Sorrel35510
Soybean50025200
Spinach1502550
Spinach, New Zealand5002550
Squash5002550
Tomato50510
Tomato, husk35510
Turnip50510
Watermelon5002550
AGRICULTURAL SEED:
Agrotricum500100500
Alfalfa5025100
Alfilaria5025100
Alyceclover5025100
Bahiagrass5025100
Barrelclover10025100
Barley500100500
Bean, adzuki500100500
Bean, field500100500
Bean, mung500100500
Bean (see Velvetbean)
Beet, field500100500
Beet, sugar5001001,000
Beggarweed5025100
Bentgrass, colonial2.525100
Bentgrass, creeping2.525100
Bentgrass, velvet2.525100
Bermudagrass1025100
Bermudagrass, giant1025100
Bluegrass, annual1025100
Bluegrass, bulbous4025100
Bluegrass, Canada525100
Bluegrass, glaucantha1025100
Bluegrass, Kentucky1025100
Bluegrass, Nevada1025100
Bluegrass, rough525100
Bluegrass, Texas1025100
Bluegrass, wood525100
Bluejoint525100
Bluestem, big7025100
Bluestem, little5025100
Bluestem, sand10025100
Bluestem, yellow1025100
Bottlebrush-squirreltail9025100
Brome, field5025100
Brome, meadow13025100
Brome, mountain20025100
Brome, smooth7025100
Broomcorn400100500
Buckwheat500100500
Buffalograss:
(Burs)20025100
(Caryopses)3025100
Buffelgrass:
(Fascicles)6625100
(Caryopses)2025100
Burclover, California:
(In bur)500100500
(Out of bur)7025100
Burclover, spotted:
(In bur)500100500
(Out of bur)5025100
Burnet, little25025100
Buttonclover7025100
Canarygrass20025100
Canarygrass, reed2025100
Carpetgrass1025100
Castorbean500100500
Chess, soft5025100
Chickpea500100500
Clover, alsike2025100
Clover, arrowleaf4025100
Clover, berseem5025100
Clover, cluster1025100
Clover, crimson10025100
Clover, Kenya2025100
Clover, Ladino2025100
Clover, Lappa2025100
Clover, large hop1025100
Clover, Persian2025100
Clover, red5025100
Clover, rose7025100
Clover, small hop (suckling)2025100
Clover, strawberry5025100
Clover, sub (subterranean)25025100
Clover, white2025100
Corn, field5001001,000
Corn, pop5001001,000
Cotton500100500
Cowpea500100500
Crambe25025100
Crested dogtail2025100
Crotalaria, lance7025100
Crotalaria, showy25025100
Crotalaria, slenderleaf10025100
Crotalaria, striped10025100
Crotalaria, Sunn50025100
Crownvetch10025100
Dallisgrass4025100
Dichondra5025100
Dropseed, sand2.525100
Emmer500100500
Fescue, Chewings3025100
Fescue, hair1025100
Fescue, hard2025100
Fescue, meadow5025100
Fescue, red3025100
Fescue, sheep2025100
Fescue, tall5025100
Flax15025100
Galletagrass:
(Other than caryopses)10025100
(Caryopses)5025100
Grama, blue2025100
Grama, side-oats:
(Other than caryopses)6025100
(Caryopses)2025100
Guar50025100
Guineagrass2025100
Hardinggrass3025100
Hemp500100500
Indiangrass, yellow7025100
Indigo, hairy7025100
Japanese lawngrass2025100
Johnsongrass10025100
Kenaf500100500
Kochia, forage2025100
Kudzu25025100
Lentil50025100
Lespedeza, Korean5025100
Lespedeza, sericea or Chinese3025100
Lespedeza, Siberian3025100
Lespedeza, striate5025100
Lovegrass, sand1025100
Lovegrass, weeping1025100
Lupine, blue500100500
Lupine, white500100500
Lupine, yellow500100500
Manilagrass2025100
Meadow foxtail3025100
Medick, black5025100
Milkvetch9025100
Millet, browntop8025100
Millet, foxtail5025100
Millet, Japanese9025100
Millet, pearl15025100
Millet, proso15025100
Molassesgrass525100
Mustard, black2025100
Mustard, India5025100
Mustard, white15025100
Napiergrass5025100
Needlegrass, green7025100
Oat500100500
Oatgrass, tall6025100
Orchardgrass3025100
Panicgrass, blue2025100
Panicgrass, green2025100
Pea, field500100500
Peanut500100500
Poa trivialis (see bluegrass, rough)
Rape, annual7025100
Rape, bird7025100
Rape, turnip5025100
Rape, winter10025100
Redtop2.525100
Rescuegrass20025100
Rhodesgrass1025100
Rice500100500
Ricegrass, Indian7025100
Roughpea500100500
Rye500100500
Rye, mountain28025100
Ryegrass, annual5025100
Ryegrass, intermediate8025100
Ryegrass, perennial5025100
Ryegrass, Wimmera5025100
Safflower500100500
Sagewort, Louisiana525100
Sainfoin500100500
Saltbush, fourwing15025100
Seasame7025100
Sesbania25025100
Smilo2025100
Sorghum5001001,000
Sorghum almum15025100
Sorghum-sudangrass hybrid5001001,000
Sorgrass15025100
Sourclover5025100
Soybean500100500
Spelt500100500
Sudangrass25025100
Sunflower500100500
Sweetclover, white5025100
Sweetclover, yellow5025100
Sweet vernalgrass2025100
Sweetvetch, northern19025100
Switchgrass4025100
Timothy1025100
Timothy, turf1025100
Tobacco511
Trefoil, big2025100
Trefoil, birdsfoot3025100
Triticale500100500
Vaseygrass3025100
Veldtgrass4025100
Velvetbean500100500
Velvetgrass1025100
Vetch, common500100500
Vetch, hairy500100500
Vetch, Hungarian500100500
Vetch, Monantha500100500
Vetch, narrowleaf500100500
Vetch, purple500100500
Vetch, woolypod500100500
Wheat, common500100500
Wheat, club500100500
Wheat, durum500100500
Wheat, Polish500100500
Wheat, poulard500100500
Wheat × Agrotricum500100500
Wheatgrass, beardless8025100
Wheatgrass, fairway crested4025100
Wheatgrass, standard crested5025100
Wheatgrass, intermediate15025100
Wheatgrass, pubescent15025100
Wheatgrass, Siberian5025100
Wheatgrass, slender7025100
Wheatgrass, streambank5025100
Wheatgrass, tall15025100
Wheatgrass, western10025100
Wildrye, basin8025100
Wild-rye, Canada11025100
Wild-rye, Russian6025100
Zoysia Japonica (see Japanese lawngrass)
Zoysia matrella (see Manilagrass)

(b) Method of sampling. (1) When an importation consists of more than one lot, each lot shall be sampled separately.

(2) For lots of six or fewer bags, each bag shall be sampled. A total of at least five trierfuls shall be taken from the lot.

(3) For lots of more than six bags, five bags plus at least 10 percent of the number of bags in the lot shall be sampled. (Round off numbers with decimals to the nearest whole number, raising 0.5 to the next whole number.) Regardless of the lot size, it is not necessary to sample more than 30 bags.

(4) When the lot of seed to be sampled is comprised of seed in small containers that cannot practically be sampled as described in paragraph (b)(2) or (b)(3) of this section, entire unopened containers may be taken in sufficient number to supply a sample that meets the minimum size requirements of paragraph (a)(1) of this section.

(c) Drawing samples. Samples will not be drawn unless each container is labeled to show the lot designation and the name of the kind and variety of each agricultural seed, or kind and variety of each vegetable seed, appearing on the invoice and other entry papers, and a declaration has been filed by the importer as required under § 361.2(a). In order to secure a representative sample, an APHIS inspector will draw equal portions from evenly distributed parts of the quantity of seed to be sampled; the APHIS inspector, therefore, must be given access to all parts of that quantity.

(1) For free-flowing seed in bags or in bulk, a probe or trier shall be used. For small free-flowing seed in bags, a probe or trier long enough to sample all portions of the bag shall be used. When drawing more than one trierful of seed from a bag, a different path through the seed shall be used when drawing each sample.

(2) For non-free-flowing seed in bags or bulk that may be difficult to sample with a probe or trier, samples shall be obtained by thrusting one's hand into the seed and withdrawing representative portions. The hand shall be inserted in an open position with the fingers held closely together while the hand is being inserted and the portion withdrawn. When more than one handful is taken from a bag, the handfuls shall be taken from well-separated points.

(3) When more than one sample is drawn from a single lot, the samples may be combined into a composite sample unless it appears that the quantity of seed represented as a lot is not of uniform quality, in which case the separate samples shall be forwarded together, but without being combined into a composite sample.

(d) In most cases, samples will be drawn and examined by an APHIS inspector at the port of first arrival. The APHIS inspector may release a shipment if no contaminants are found and the labeling is sufficient. If contaminants are found or the labeling of the seed is insufficient, the APHIS inspector may forward the sample to the USDA Seed Examination Facility (SEF), Beltsville, MD, for analysis, testing, or examination. APHIS will notify the owner or consignee of the seed that samples have been drawn and forwarded to the SEF and that the shipment must be held intact pending a decision by APHIS as to whether the seed is within the noxious weed seed tolerances of § 361.6 and is accurately labeled. If the decision pending is with regard to the noxious weed seed content of the seed and the seed has been determined to be accurately labeled, the seed may be released for delivery to the owner or consignee under the following conditions:

(1) The owner or consignee executes with Customs either a Customs single-entry bond or a Customs term bond, as appropriate, in such amount as is prescribed by applicable Customs regulations;

(2) The bond must contain a condition for the redelivery of the seed or any part thereof upon demand of the Port Director of Customs at any time;

(3) Until the seed is approved for entry upon completion of APHIS' examination, the seed must be kept intact and not tampered with in any way, or removed from the containers except under the monitoring of an APHIS inspector; and

(4) The owner or consignee must keep APHIS informed as to the location of the seed until it is finally entered into the commerce of the United States.

authority: 7 U.S.C. 1581-1610; 7 CFR 2.22, 2.80, and 371.3
source: 62 FR 48460, Sept. 16, 1997, unless otherwise noted.
cite as: 7 CFR 361.5