CERTIFIED SEED: Cereal Seed Regulations 1993 - Seed Structures
Maximum number of seeds or structures. January 2000

 

Category

Size of sample exam

Other cult. Cereal Spec

(A)

Non-Cereals

(B)

Total Other plant spec

(Sum of A+B)
Not to exceed

Avena ludoviciana (Winter Wild Oat)
A. Sterilis (Mediterranean Wild Oat)
A. fatua (Spring Wild Oat)
Lolium temulentum (Darnel)

Agrostemma githago ( Corn Cockle)
Raphanus raphanistrum (Wild Radish)
Bromus sterilis (Barren Brome)
Agropyron repens (Couch)

Pieces of ergot

Min. % purity

Min. % germ

Wheat Barley & Oats! BR/PB/BL/BH 500g
1kg 		1x
0 		3
1 		4
1 		0*
0 		1+
0++ 		1
0 		99
99 		85#
85#
1L
1H		 500g
1kg 		7
1 		7
1 		10
2 		0*
0 		3+
1 		3
1 		98
99 		85
85
2L
2H		 500g
1kg 		7
3 		7
2 		10
4		 0*
0		 3+
1 		3
1 		98
99 		85
85
Rye BR/PB/BS
CS		 500g
500g		 1x
7 		3
7 		4
10 		0*
0*		 1+
3+
 1
3(4£) 		98
98 		85
85
Triticale BR/PB/BL
1L 		500g
500g 		1x
7 		3
7 		4
10 		0*
0*		 1+
3+
 1
3 		98
98 		80
80
Maize BS
CS 		250g
250g 		-
-		 -
-		 0
0		 -
-		 -
-

-
-

 98
98 		90
90

 

* 1 seed in 500g is acceptable if a 2nd 500g is free BR = Breeders Seed BS = Basic Seed
+ Bromus sterilis or Agropyron repens - HVS standards is 1 seed in 1kg (No standard for EEC Min) PB = Pre Basic Seed CS = Certified Seed
  BL = Basic Lower  
x 2 seeds in 500g is acceptable if a 2nd 500g is free BH = Basic Higher
++ BH nil standard applies in respect of Raphanus and Agrostemma only 1H = 1st Generation Higher Voluntary Standard
  2H = 2nd Generation Higher Voluntary Standard
! Naked oats - Regulations allow 75 % minimum germination 1L = 1st Generation Lower Voluntary Standard
  2L = 2nd Generation Lower Voluntary Standard
£ Hybrid Rye. The presence of five ergots or fragments of ergot in a sample of seed of a hybrid of rye of the prescribed weight shall be deemed to be in conformity with required sample purity standards, where a second sample of the same weight contains not more than ergot.

 To calculate the permitted admix per hectare:

Seed rate / Ha

X

Permitted admix

E.g. 1st or 2nd Gen. Lower

155 kg X 10

= 3100 or 2nd Gen. higher

155 X 4

= 620

Sample size

1

0.5 kg

1 kg