TABLE 2.-METHODS OF TESTING FOR LABORATORY GERMINATION AND HARD SEED-Continued 1 Substrata: B=between blotters; TB=top of blotters; T=paper toweling; R=rolled towels; S-soil or sand; TS= top of soil; P=petri dishes with 2 thicknesses of blotters or 1 thickness of absorbent cotton or 5 thicknesses of paper toweling or on top of sand or soil in closed petri dishes. Temperature: A single numeral indicates a constant temperature. Two numerals separated by a dash indicate an alternation of temperature; the test is held at the first temperature for approximately 16 hours and at the second temperature for approximately 8 hours per day. Hard seeds often present. If at the end of the germination period there are still present swollen seeds or seeds which have just started to germinate all seeds or seedlings except the above-stated shall be removed and the test continued for 5 additional days and the normal seedlings included in the percentage of germination. A two-tenths (0.2) percent solution of potassium nitrate (KNO3) prepared by dissolving 2 grams of KNO; in 1,000 cc. of water is used in moistening the substratum... The prechilling period is not included in the germination period given in this table unless otherwise specified. 'Prewet' method on cotton: Shake seed in a closed container, thoroughly wetting the 'fuzz' of the seed. Blot off all excess moisture and put in to germinate. If the 'prewet' test is higher, report both it and the standard germination. [10 F. R. 9952, 12545] TOLERANCES § 201.59 Application. The following tolerances shall be recognized between the percentages or rates of occurrence found by analysis, test, or examination in the administration of the act and percentages or rates of occurrence required or stated as required by the act. Unless otherwise provided, the tolerances shall be determined by applying the formulae to the percentages or rates of occurrence found in the administration of the act. § 201.60 Purity percentages. In the determination of the tolerance for the percentage of the distinguishable kind, type, or variety (pure seed), weed seeds, other crop seeds, and inert matter, the sample shall be first considered as made up of two parts: (a) The percentage of the component (pure seed, weed seed, crop seed or inert matter as the case may be) being considered, and (b) the difference between that percentage and 100. The number represented by (a) is then multiplied by the number represented by (b) and the product is divided by 100. The resulting number is then multiplied by 0.2 (2/10) and the resulting product added to 0.2 or 0.6 as indicated in the following formulae: 819574-49- -49 For Poa spp., Agrostis spp., Festuca spp., bromegrass, crested wheatgrass, orchard grass, velvet grass, tall oatgrass, meadow foxtail, sweet vernalgrass, Rhodes grass, Dallis grass, carpet grass, and Bermuda grass, Guinea grass, molasses grass and Vasey grass and mixtures containing these seeds singly or combined in excess of 50 percent, an additional tolerance shall be allowed. This is to be obtained by adding to the regular tolerance mentioned above the product obtained by . multiplying the regular tolerance by the lesser of "a" and "b" divided by 100. [5 F. R. 27, as amended at 10 F. R. 9955, 13 F. R. 8731] § 201.61 Germination. The following tolerances are applicable to the percentage of germination and also to the sum of the germination plus the hard seed. Found by test: 96 or over__ 90 or over but less than 96_. 80 or over but less than 90.. 70 or over but less than 80. 60 or over but less than 70. Less than 60. Tolerance 5 6 9 10 § 201.62 Pure live seed. The tolerance for pure live seed shall be determined by applying the respective tolerances to the germination plus the hard seed and the pure seed. §201.63 Noxious weed seeds in interstate commerce. The following tolerances for rates of occurrence of noxious weed seeds shall be recognized and shall be applied to the number of noxious weed seeds found by analysis in the quantity of seed specified for noxious weed seed determinations in § 201.52. Representations showing the rate of occurrence indicated in columns 2 and 4 will be considered within the tolerance if no more than the accompanying number in columns 1 and 3 are found by analysis in the administration of the act. For rates of Occurrence higher than those shown in the table and in case of additional or more extensive analyses, a tolerance based on a degree of certainty of 5 percent (P=.05) will be recognized. IMPORTED SEED § 201.101 Exemptions. For the purposes of section 302 (c) (2) of the act, seeds of the following kinds are found to be imported in a substantial proportion for other than seeding purposes and are exempted from the import provisions (Title III) of the act when imported for other than seeding purposes: Provided, That they are accompanied by declarations when and as required under § 201.222: Barley. Bean, Adzuki. Buckwheat, common. Horse or broad bean. Millet, foxtail, German, Hungarian, or golden. Mustard. Mustard, black. Mustard, white. Oat. Parsley. Peanut. Pea, Austrian winter. 13 Pea, field. 14 15 24 16 17 18 19 20 30 21 § 201.64 Noxious weed seeds in imported seed. The tolerance applicable to the rate of occurrence of noxious weed seeds in imported seeds shall be 6/10 of the permissible number of seeds. EXAMINATIONS IN THE ADMINISTRATION OF THE ACT § 201.65 Indistinguishable seed. When the identification of the kind, variety, or type of seed is not possible by seed characteristics, identification may be based upon the seedling, growing plant, or mature plant characteristics according to such authentic information as is available. § 201.66 Origin. The presence of incidental weed seeds, foreign matter, or any other existing circumstances shall be considered in determining the origin of seed. § 201.103 Unadapted alfalfa and red clover. Alfalfa seed and red clover seed of foreign origin other than the Dominion of Canada have been determined to be unadapted for general agricultural use in the United States. (Sec. 402 (a), 53 Stat. 1285; 7 U. S. C. 1592 (a)) 16 F. R. 3960] § 201.104 Staining of imported seed. (a) 10 percent of the seed in each container of the seed of alfalfa or red clover grown in any foreign country other than the countries of South America and the Dominion of Canada shall be stained red; (b) 10 percent of the seed in each container of the seed of alfalfa or red clover grown in any of the countries of South America shall be stained orange-red; (c) 1 percent of the seed in each container of the seed of alfalfa or red clover grown in the Dominion of Canada shall be stained violet; (d) 10 percent of the seed in each container of the seed of alfalfa or red clover shall be stained red; (1) If the origin of alfalfa or red clover is unestablished; (2) If the origin of alfalfa or red clover is such as to require different colors; and (3) If the alfalfa or red clover of foreign origin has been commingled with seed of the same kind grown in the United States. (Sec. 402 (a), 53 Stat. 1285; 7 U. S. C. 1592 (a)) [6 F. R. 3960] § 201.105 Method of staining. The stain shall be in the form of a solution of such concentration as to stain the seeds distinctly with the colors prescribed. The designated portion of the seed to be stained shall be completely and distinctly stained the prescribed color and blended with the unstained seed in accordance with instructions that may be issued from time to time by the Production and Marketing Administration. § 201.106 Supervision of staining. Seed required to be stained and found not to have been stained prior to arrival in the United States shall not be permitted entry until it has been stained under the supervision of an employee or authorized agent of the United States Department of Agriculture. The staining in such case shall be at the expense of the importer, who shall also reimburse the Government for the expenses of travel required to perform such supervision. § 201.107 Weed seeds. (a) Seeds or bulblets of all plants belonging to the following plant families, except those listed as agricultural or vegetable seeds, or recognized as seeds of ornamentals, shall be considered weed seeds when occurring in importations subject to the act. PLANT FAMILIES Aizoaceae Carpetweed. Asclepiadaceae-Milkweed. Capparidaceae Caper. Crassulaceae-Orpine. Iridaceae-Iris. Juncaceae-Rush. Labiatae-Mint. Leguminosae-Legume. Lobeliaceae-Lobelia. Lythraceae-Loosestrife. Nyctaginaceae-Four-o'clock. Onagraceae Evening-primrose. Papaveraceae-Poppy. Phytolaccaceae-Pokeweed. Polygonaceae-Buckwheat or smartweed. Portulacaceae-Purslane. |