29.10.2009 Official Journal of the European Union L 282[7 COMMISSION REGULATION (EC) No 1020/2009 of 28 October 2009 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I, III, IV and V thereto to technical progress (Text with EEA relevance) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Regulation (EC) No 2003/2003 of the European Parliament and of the Council of 13 October 2003 relating to fertilisers ('), and in particular Article 31(1) and (3) thereof, Whereas: 1) Article 3 of Regulation (EC) No 2003/2003 provides that a fertiliser belonging to a type of fertiliser listed in Annex I thereto and complying with the conditions laid down in that Regulation may be designated ‘EC fertiliser’. Partially solubilised rock phosphate is a primary nutrient fertiliser type listed in Annex I to Regulation (EC) No 2003/2003. Article 16 of that Regulation permits the addition of secondary nutrients to all primary nutrient fertiliser types. However, the minimum content of phos- phorous pentoxide laid down for the existing partially solubilised phosphate rock fertiliser type is set too high to allow the addition of secondary nutrients. A new fertiliser type should therefore be introduced to allow mixtures of partially solubilised rock phosphate with magnesium secondary nutrients to be marketed as ‘EC fertiliser’. Magnesium sulphate or magnesium oxide is added to ground phosphate rock to remedy phosphate and magnesium deficiencies in certain agricultural soils. The partial solubilisation makes phosphate and magnesium rapidly available to crops for a short period, whereas the non-solubilised constituents provide a slower but more sustained supply of phosphate and magnesium. Both phosphate and magnesium nutrients should be available in a single fertiliser type in order to benefit farmers. Magnesium sulphate is a secondary nutrient fertiliser type listed in Annex I to Regulation (EC) No 2003/2003. Article 20 of that Regulation permits the addition of micro-nutrients to all secondary nutrient fertiliser types. However, the minimum content of sulphur trioxide and magnesium oxide laid down for the existing magnesium sulphate fertiliser type is set too high to allow the () O] L 304, 21.11.2003, p. 1. addition of micro-nutrients. Due to a growing interest in balanced plant nutrition the use of micro-nutrients has increased. A blend of magnesium sulphate with micro- nutrients would make it easier for farmers to use such micro-nutrients. The magnesium sulphate fertiliser type should therefore be revised to allow mixtures of magnesium  sulphate with micro-nutrients to be marketed as ‘EC fertiliser’. Annex III to Regulation (EC) No 2003/2003 gives technical provisions for the control of ammonium nitrate fertilisers of high nitrogen content. It should be clarified that the methods of analysis may be used for the different ammonium nitrate fertiliser forms (prills or granules). Furthermore, those descriptions of the analysis methods make use of obsolete units of pressure rather than the current SI units. Article 29(2) to Regulation (EC) No 2003/2003 requires that controls of EC fertilisers belonging to fertiliser types listed in Annex I to that Regulation are made in accordance with the methods of analysis that are described in detail in Annexes III and IV to that Regu- lation. As those methods are not internationally recognised, the European Committee for Standardisation (CEN) was mandated to develop equivalent EN standards to replace the existing methods. As a partial outcome of the CEN Mandate M/335 concerning the modernisation of analytical methods on fertilisers and liming materials, 20 EN standards have been developed and should be introduced in Annex IV to Regulation (EC) No 2003/2003. Some of those standards should replace existing methods of analysis, whilst others are new. Validated methods published as EN standards usually include a ring-test (inter-laboratory test) to check the reproducibility of the analytical methods between different laboratories. However, a preliminary evaluation of the methods to be introduced in the mandate showed that some of them are little used. In this case, an editorial revision was found sufficient and no ring-test was deemed necessary. A distinction between validated EN standards and non-validated methods should therefore be made to help to identify the EN standards which have undergone an inter-laboratory test to correctly inform controllers about the statistical reliability of EN standards.