The Cereal Seed (England) Regulations 2002

12.—(1) The seed shall conform to the following standards or other conditions as regards the content of seeds of other plant species—

Species and category	Level (where applicable)	Maximum content by number of seeds of other plants species in a sample of the weight specified in column 6 of the table in Schedule 7
		All other plant species (including seeds of the species specified in columns 4 to 8)	Other cereal species	All plant species other than cereals	Wild oats or darnel	Wild radish or corn cockle (except in HVS level seed)	Wild radish, corn cockle, sterile brome or couch in HVS level seed
1	2	3	4	5	6	7	8
(a) As regards seeds of other cereal species, a second seed shall not be regarded as an impurity if a second sample of the same weight is free from any seeds of other cereal species.
(b) The presence of one seed of wild oats or darnel in a sample of the prescribed weight shall not be regarded as an impurity where a second sample of the same weight is free from any seed of either of these species.
(c) In basic seed, the nil standard shall apply only in respect of wild radish and corn cockle.
Basic seed of components of hybrid varieties of barley, durum wheat, oats, spelt wheat and wheat	—	4	1(a)	3	0(b)	1	Not applicable
Basic seed of barley, durum wheat, oats, spelt wheat and wheat other than components of hybrid varieties	HVS	1	0	1	0	Not applicable	0(c)
	Minimum	4	1(a)	3	0(b)	1	Not applicable
CS seed of hybrids of barley, durum wheat, oats, spelt wheat and wheat	—	10	7	7	0(b)	3	Not applicable
C1 seed of barley, durum wheat, oats, spelt wheat and wheat	HVS	2	1	1	0	Not applicable	1
	Minimum	10	7	7	0(b)	3	Not applicable
C2 seed of barley, durum wheat, oats, spelt wheat and wheat	HVS	4	3	2	0	Not applicable	1
	Minimum	10	7	7	0(b)	3	Not applicable
Basic seed of rye	—	4	1(a)	3	0(b)	1	Not applicable
CS seed of rye	—	10	7	7	0(b)	3	Not applicable
Basic seed of triticale	—	4	1(a)	3	0(b)	1	Not applicable
CS seed of hybrids and self-pollinating triticale and C1 and C2 seed of triticale	—	10	7	7	0(b)	3	Not applicable
Basic and CS seed of maize	—	0	Not applicable	Not applicable	Not applicable	Not applicable	Not applicable

(2) In the table set out in paragraph (1)—

“corn cockle” means plants of the species Agrostemma githago;

“couch” means plants of the species Agropyron repens;

“darnel” means plants of the species Lolium temulentum;

“sterile brome” means plants of the species Bromus sterilis; and

“wild radish” means plants of the species Raphanus raphanistrum.