Mich. Admin. Code R. 285.623.304

Current through Vol. 24-19, November 1, 2024

Section R. 285.623.304 - Annual ryegrass (Lolium multiflorum and Lolium rigidum)

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%

Mich. Admin. Code R. 285.623.304

1994 AACS