Mich. Admin. Code R. 285.623.305

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

Section R. 285.623.305 - Bluegrass (Poa spp.)

Rule 305.

(1) The standards of this rule for bluegrass include Kentucky, rough, and big bluegrasses.

(2) To be eligible to produce bluegrass certified seed, land shall not have grown, or have been seeded to, bluegrass during the previous 3 years, unless the previous crop was of the same variety and class and was certified. To produce foundation seed, land shall have been free of bluegrass for 5 years.

(3) Bluegrass shall be planted in distinct rows.

(4) Limitations on the age of stand and pedigree classes of seed through which a variety may be multiplied shall be specified by the originator, but shall not exceed the limitations that are established by the certifying agency.

(5) Field standards for bluegrass seed are as follows:

Factor	Foundation	Classes of Seed Certified
Other varieties (maximum) 1	none	2.0%
Isolation!, 3 (minimum)	165 feet	165 feet

1 Includes off-type plants as may be designated by the varietal description.

2 See R 285.623.302 - Isolation.

3 Mechanical isolation is required between rough bluegrass and Kentucky bluegrass.

(6) Seed standards for bluegrass seed are as follows:

			Other America Varieties
Merion
Factor	Foundation	Certified	Certified
Pure seed (minimum) 92.0%	95.0%		95.0%
Other crop (maximum) 0.25%1	0.1%		0.25%1
Inert matter (maximum) 5.0%		5.0%	8.0%
Weed seed2 (maximum) 0.3%	0.1%		0.3%
Prohibited noxious weeds (maximum)	none		none
none
Restricted noxious weeds and St. Johnswart, docks, sheep sorrel, bedstraw (maximum) per pound	27 per pound		45 per pound	45
Germination (minimum)	--		75.0%
75.0%

1 Common Kentucky bluegrass is limited to 3.0%) in merion, sabre, and colt rough bluegrass and 2.0%) in all other varieties.

2 Annual bluegrass is not allowed in foundation seed.

Mich. Admin. Code R. 285.623.305

1994 AACS