Washington Administrative Code › Title 16 - Agriculture, Department of (See also Titles 24, 60, and 142) › SEEDS AND PLANTING STOCK CERTIFICATION › Chapter 16-302 - General rules for seed certification › Part 5 - SPECIFIC SEED CERTIFICATION STANDARDS › Grass Seed Certification Standards › Section 16-302-385 - Grass seed standards for certification

Current through Register Vol. 24-14, July 15, 2024
The seed standards for grass shall be as follows:
SEED STANDARDS
CROP AND TYPE OF
REPRODUCTION AS PER
WAC
									 16-302-330
MINIMUM % GERM (d)(n)
MINIMUM % PURE
MAXIMUM % INERT
MAXIMUM % WEEDS (b)
MAXIMUM % OTHER CROPS
MAXIMUM SEEDS OF OTHER CROP GRASS
									 SPECIES
FNDT. REG.
CERT.
FNDT. REG.
CERT.
FNDT. REG.
CERT.
FNDT. REG.
CERT.
FNDT. (i) REG. (i)
CERT. (a)
FNDT. SEEDS/
lb.
REG. SEEDS/
lb.
CERT. %
BLUEGRASS
Big
Canby
Kentucky
Canada, Upland
(A)
(A)
(A)
(A)
70
70
80
80
70
70
80
80
90
90
97
96
90
90
97
92
10
10
3
4
10
10
3
8
.05
.05
.05
.05
.3
.3
.3
.3
.1
.1
.1
.1
.5
.5
.5
.5
45 /lb.
45 /lb.
45 /lb.
45 /lb.
454 /lb.
454 /lb.
454 /lb.
907 /lb.
.25
.25
.25
.25
BROMEGRASS
Smooth & Meadow
Mountain & Sweet
(C)
(C)
80
85
85
85
95
95
95
95
5
5
5
5
.05
.3
.3 (c)
.3 (c)
.1
.1
.5
1.0
9 /lb.
9 /lb.
91 /lb.
91 /lb.
.25
.25
DEERTONGUE
(C)
50
50
97
95
3
5
.50
.5 (c)
1.0
1.0
1%
FESCUE
Tall & Meadow
(C)
80
85
95
97
5
3
.03
.3 (c)
.1
.5
18 /lb.
91 /lb.
.25
Blue, Hard &
Sheep (m)
Turf Type (o)
Reclamation/Range
Type (o)
(C)
80
80
85
85
95
95
97
92
5
5
3
8
.03
.03
.3 (c)
.3 (c)
.1
.1
.5
.5
9 /lb.
9 /lb.
45 /lb.
45 /lb.
.25
.25
Chewings Red,
Idaho and other
Fescue
(C)
80
90
95
97
5
3
.03
.3 (c)
.1
.5
9 /lb.
45 /lb.
.25
ORCHARDGRASS
(C)
80
85
85
90
15
10
.03
.3 (c)
.1
.5
27 /lb.
91/lb.
.25
80 for penlate & latar
RYEGRASS
Pennfine
(C)
85
80
90 (l)
85
96 (k)
96 (k)
97 (k)
97 (k)
4
4
3
3
.1
.1
.3 (c)
.3 (c)
.1
.1
.5
.5
9 /lb.
9 /lb.
45 /lb.
45 /lb.
.25
.25
TIMOTHY
80
85
97
97
3
3
.1
.3
.1
.5
9 /lb.
45 /lb.
.25
WHEATGRASS (n)
Beardless
Bluebunch
(C)
(C)
80
80
85
85
90
90
90
90
10
10
10
10
.1
.1
.3 (c)
.3 (c)
.1 (e)
.1 (e)
.5 (e)
.5 (e)
9 /lb.
9 /lb.
45 /lb.
45 /lb.
25
25
Intermediate, Tall
Pubescent
(C)
80
85
95
95
5
5
.1
.3 (c)
.1 (e)
.5 (e)
9 /lb.
45 /lb.
.25
Western, R/S,
Streambank,
Thickspike
(C)
80
85
90
90
10
10
.1
.3 (c)
.1 (e)
.5 (e)
9 /lb.
45 /lb.
.25
Slender
Crested & Siberian
(S)
(C)
80
80
85
85
90
90
90
95
10
10
10
5
.1
.1
.3 (c)
.3 (c)
.1 (e)
.1 (e)
.5 (e)(p)
.5 (e)
9 /lb.
9 /lb.
45 /lb.
45 /lb.
.25 (p)
.25
INDIAN
RICEGRASS
(S)
80 (j)
80 (j)
95
90
5
10
.3
.5
.5
1.0
9 /lb.
45 /lb.
.25
PUCCINELLIA (n)
distans
(C)
80
80
90
95
5
5
.3
.5
.5
1.0
45 /lb.
454 /lb.
.25
WILDRYE (n)
(C)
80
80
90
90
10
10
.1
.3 (c)
.1
.5
9 /lb.
45 /lb.
.25
BENTGRASS
(C)
85
85
98
98
2
2
.3
.4 (f)(g)
.2
.6 (h)
REDTOP
(C)
80
80
92
92
8
8
.3
.5 (f)
.5
.2
Ann.
CANARYGRASS
GREEN (n)
NEEDLEGRASS
SWITCHGRASS
(C)
(C)
(C)
85
80
60
85
80
60
99
80
90
99
80
90
1
20
10
1
20
10
.1
.1
.5
.3
.3 (c)
1.5
1 /lb.
.1
.1
3 /lb.
.5
.25
-
-
-
The following (a) - (p) are notes to the above
						table.
(a)
Not to exceed .25% other grass species for blue
									 tag seed.
(b)
Grass seed must not contain more than 45/lb.
									 for registered seed 91/lb. for certified seed, singly or collectively, of
									 objectionable weed seeds. (See (f) of this subsection for certified bentgrass
									 and redtop exemption.) Grass seed shall be free of the seed of prohibited
									 noxious weeds.
(c)
A tolerance of 0.5% may be allowed for samples
									 containing weedy bromus spp provided the total of all other weed seeds does not
									 exceed 0.3%.
(d)
A standard tetrazolium (two hundred seed) test
									 may be used in lieu of germination test. NOTE: State and federal seed laws
									 require seed be labeled on a germination test.
(e)
A tolerance of 0.8% may be allowed in
									 registered and certified wheatgrass containing small grain seed provided the
									 total of all other crop seed does not exceed 0.1% for registered class and 0.5%
									 for certified class.
(f)
Certified seed must not contain over 907 seeds
									 per pound, singly or collectively, of the following weeds: Plantago spp., Big
									 Mouse-ear Chickweed, Yarrow, Spotted Cat's Ear, and Dandelion.
(g)
A maximum of .50% weed seed may be allowed in
									 certified bentgrass containing silver hairgrass provided the total of all other
									 weed seed does not exceed .40%.
(h)
1.50% other fine bentgrasses and .50% redtop
									 may be allowed in certified bentgrass containing a minimum of 98.00% total
									 bentgrass.
(i)
A crop exam is required for all registered and
									 foundation class grass seeds.
(j)
Or 70% by Tz test.
(k)
Maximum other ryegrass allowed as determined by
									 fluorescence test: Foundation 0.1%, registered 1%, certified 2% for annual and
									 3% for perennial containing a minimum of 97% total ryegrass. Acceptable
									 fluorescence levels for specific varieties available upon request.
(l)
85% minimum germination allowed on ryegrass
									 varieties as designated by the breeder or variety owner. See list maintained by
									 the seed program.
(m)
An ammonia test is required on hard, blue and
									 sheep fescue to determine presence of other Fescue sp. Other fine-leaved fescue
									 found in the ammonia test will be included with other crop not other grass
									 species.
(n)
Total viability as allowed in WAC
									 16-302-170 can be substituted for
									 germination percentage.
(o)
Turf type fescues 97% pure seed.
									 Range/reclamation types 92% pure seed. Varietal designation of turf or
									 range/reclamation types are to be made by the breeder or variety owner. If no
									 designation is made, the variety will be considered a turf type.
(p)
10% slender wheatgrass is allowed in the
									 certified class of Critana, provided that the total of all other grass spp.
									 does not exceed .25% and total other crop, including all other grass spp. does
									 not exceed .50%.
Statutory Authority: RCW 15.49.301,
						  15.49.370(4), and
						  chapter
						  34.05 RCW. 11-06-023,
						  § 16-302-385, filed 2/24/11, effective 3/27/11. Statutory Authority:
						  Chapters 15.49 and
						  34.05 RCW. 10-04-029, §
						  16-302-385, filed 1/26/10, effective 2/26/10. Statutory Authority:
						  RCW
						  15.49.310 and
						  chapter
						  34.05 RCW. 06-15-139,
						  § 16-302-385, filed 7/19/06, effective 8/19/06. Statutory Authority:
						  RCW
						  15.49.310,
						  15.49.370(3) and
						  chapter
						  34.05 RCW. 04-08-044,
						  § 16-302-385, filed 3/31/04, effective 5/1/04. Statutory Authority:
						  Chapters 15.49 and
						  34.05 RCW. 03-18-072, §
						  16-302-385, filed 8/29/03, effective 9/29/03; 02-12-060, § 16-302-385,
						  filed 5/30/02, effective 6/30/02. Statutory Authority:
						  RCW
						  15.49.005,
						  15.49.081,
						  15.49.310,
						  15.49.370(3) and
						  chapter
						  17.24 RCW. 00-24-077,
						  § 16-302-385, filed 12/4/00, effective
						  1/4/01.