5.—(1) There shall be a physical barrier or at least two metres of fallow between the seed crop and any crop likely to cause contamination in the seed.
(2) The minimum distances from neighbouring pollen sources shall be:
Crop | Minimum distance | |||
|---|---|---|---|---|
| 1. | For the production of Pre-Basic and Basic Seed: from any pollen sources of the genus Beta | 1,000 m | ||
| 2. | For the production of Certified Seed: | |||
| (a) | of sugar beet: | |||
| – | from any pollen sources of the genus Beta not included below | 1,000 m | ||
| – | the intended pollinator or one of the intended pollinators being diploid, from tetraploid sugar beet pollen sources | 600 m | ||
| – | the intended pollinator being exclusively tetraploid, from diploid sugar beet pollen sources | 600 m | ||
| – | from sugar beet pollen sources, the ploidy of which is unknown | 600 m | ||
| – | the intended pollinator or one of the intended pollinators being diploid, from diploid sugar beet pollen sources | 300 m | ||
| – | the intended pollinator being exclusively tetraploid, from tetraploid sugar beet pollen sources | 300 m | ||
| – | between two sugar beet seed production fields in which male sterility is not used | 300 m | ||
| (b) | of fodder beet: | |||
| – | from any pollen sources of the genus Beta not included below | 1,000 m | ||
| – | the intended pollinator or one of the pollinators being diploid, from tetraploid fodder beet pollen sources | 600 m | ||
| – | the intended pollinator being exclusively tetraploid, from diploid fodder beet pollen sources | 600 m | ||
| – | from fodder beet pollen sources, the ploidy of which is unknown | 600 m | ||
| – | the intended pollinator or one of the pollinators being diploid, from diploid fodder beet pollen sources | 300 m | ||
| – | the intended pollinator being exclusively tetraploid, from tetraploid fodder beet pollen sources | 300 m | ||
| – | between two fodder beet seed production fields in which male sterility is not used | 300 m | ||
The above distances can be disregarded if there is sufficient protection from any undesirable foreign pollinator. No isolation is necessary between seed crops using the same pollinator.
The ploidy of both seed-bearing and pollen-shedding components of seed-producing crops is to be established by reference to the Common Catalogue or UK National List.
If this information is not included for any variety, the ploidy is to be regarded as unknown, and a minimum isolation distance of 600 metres is required.
(3) With approval of the Scottish Ministers these distances may be modified if there is adequate protection against undesirable pollen.