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Michigan Administrative Code (Last Updated: November 16, 2016) |
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Department AC. Agriculture and Rural Development |
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Pesticide and Plant Pesticide Management Division |
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Chapter Regulation No. 623. Field Seed Certification |
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Part 3. TURFGRASS SEED STANDARDS |
Section 285.623.304. Annual ryegrass (Lolium multiflorum and Lolium rigidum).
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Rule 304. (1) Land shall not have grown, or have been seeded to annualryegrass during the previous 5 years, unless the land was used to produceannual ryegrass seed that is of the same variety and class and iscertified. Land shall not have grown, or have been seeded to perennial ryegrass during the previous 5 years to produce foundation seed, and the previous 2 years to produce certified seed.
(2) Annual ryegrass shall be planted in distinct rows.
(3) Field standards for annual ryegrass seed are as follows:
Classes of Seed
Factor
Foundation
Certified
Other varieties (maximum)
none
1.0%
Isolation 1, 2,
Less than 5 acres (minimum)
2,640 feet
330 feet
More than 5 acres (minimum)
900 feet
165 feet
1 This distance shall be maintained from all varieties of ryegrass,either annual or perennial. Diploid ryegrass varieties need not beisolated from tetraploid ryegrass varieties, except for a distance of 15 feet to prevent mechanical mixture.
2 See R 285.623.302 - Isolation.
(4) Seed standards for annual ryegrass seed are as follows:
Classes of Seed
Factor Foundation Certified
Total ryegrass (minimum) 97.0% 97.0%
Other ryegrass (maximum) 0.1% 3.0%
Crop other than ryegrass (maximum) 0.1% 0.5%
Total other crop including other
ryegrass (maximum) 0.2% 2.5%
Inert matter (maximum) 3.0% 3.0%
Weed seed (maximum) 0.15% 0.3%
Prohibited noxious weeds (maximum) none none Restricted noxious weeds and St.
Johnswart, docks, sheep sorrel,
bedstraw (maximum) 27 per pound 45 per pound
Germination (minimum) 90.0%
History: 1994 AACS.