Fluorescence percentages in ryegrasses

Tolerances for 400-seed fluorescence tests shall be those set forth in the following table plus one-half the regular pure-seed tolerance determined in accordance with § 201.60. When only 200 seeds of a component in a mixture are tested, an additional 2 percent shall be added to the fluorescence tolerance.

Fluorescence Tolerance, Based on Test Fluorescence (TFL) 100 99 1 98 1.6 97 2 96 2.3 95 2.6 94 2.9 93 3.2 92 3.4 91 3.6 90 3.8 89 4 88 4.1 87 4.3 86 4.5 85 4.7 84 4.8 83 4.9 82 5 81 5.2 80 5.3 79 5.4 78 5.5 77 5.6 76 5.7 75 5.8 74 5.8 73 5.9 72 6 71 6.1 70 6.2 69 6.2 68 6.3 67 6.3 66 6.4 65 6.5 64 6.5 63 6.5 62 6.6 61 6.6 60 6.7 59 6.7 58 6.8 57 6.8 56 6.8 55 6.8 54 6.9 53 6.9 52 6.9 51 6.9 50 6.9 49 6.9 48 6.9 47 6.9 46 6.9 45 6.9 44 6.9 43 6.9 42 6.9 41 6.9 40 6.9 39 6.8 38 6.8 37 6.8 36 6.8 35 6.7 34 6.7 33 6.7 32 6.6 31 6.6 30 6.5 29 6.5 28 6.4 27 6.4 26 6.3 25 6.2 24 6.2 23 6.1 22 6 21 5.9 20 5.8 19 5.7 18 5.6 17 5.5 16 5.4 15 5.3 14 5.2 13 5 12 4.9 11 4.7 10 4.6 9 4.4 8 4.2 7 4 6 3.7 5 3.5 4 3.2 3 2.8 2 2.4 1 1.8 0 1

[32 FR 12781, Sept. 6, 1967, as amended at 59 FR 64516, Dec. 14, 1994; 85 FR 40583, July 7, 2020]