# The Fodder Plant Seeds Regulations 1993, Paragraph 9: Standards for varietal purity


The crop shall have sufficient varietal identity and varietal purity. In particular the average level of the following impurities, by area or by number, as appropriate, shall not exceed—
IN CROPS TO PRODUCE
Basic Seed
Certified Seed, Certified Seed of the First and Second Generations
(a) recognisable off-types of the same species in grasses and herbage legumes (including Italian or awned ryegrass in perennial ryegrass and perennial or awnless ryegrass in Italian ryegrass) other than smooth-stalked meadowgrass
1 plant in 50 sq m
1 plant in 10 sq m
(b) recognisable off-types of the same species in smooth-stalked meadowgrass other than apomictic uni-clonal varieties
1 plant in 20 sq m
4 plants in 10 sq m
(c) recognisable off-types of the same species in apomictic uni-clonal varieties of smooth-stalked meadowgrass
1 plant in 20 sq m
6 plants in 10 sq m
(d) recognisable off-types of the same species in field peas and field beans
0.3%
1%
(e) recognisable off-types of the same species in swede and fodder kale
0.3%
1%
(f) recognisable off-types of the same species in vetches, lupins and fodder radish
1 plant in 30 sq m
1 plant in 10 sq m
(g) plants (other than those classified as off-types) grown from shed seeds in grasses and herbage legumes
1% of seed heads in crop
No standard
(h) ryegrass in cocksfoot, meadow fescue, red fescue or tall fescue
1 plant in 50 sq m
1 plant in 10 sq m
(i) suckling clover (Trifolium dubium Sibth.) in white clover
1 plant in 50 sq m
1 plant in 10 sq m

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Source: https://www.legislation.gov.uk/uksi/1993/2009/schedule/4/paragraph/9 (the official version)
Page: https://openlegislation.uk/fodder-plant-seeds-regulations-1993/schedule-4/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.