Paragraph 13
Organic manure in the form of slurry, poultry manure or liquid digested sewage sludge shall not be applied to any land which has a sandy or shallow soil–
(a)
between 1st September and 1st November in any year where the land is in grass or is or is to be sown with an autumn sown crop;
(b)
between 1st August and 1st November in any year in any other case.