1. 6. 90 Official Journal of the European Communities No L 140/99 COMMISSICN REGULATION (EEC) No 1488/90 of 31 May 1990 fixing for the 1990/91 marketing year the reference prices for lemons THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic Community, Having regard to the Act of Accession of Spain and Portugal, Having regard to Council Regulation (EEC) No 1035/72 of 18 May 1972 on the common organization :of .the market in fruit and vegetables ('), as last amended by- Regulation (EEC) No.1193/90 (%), and in particular Article 27 (1) thereof, Whereas, pursuant to Article 23 (1) of Regulation (EEC) No 1035/72, reference prices valid for the whole Community are to be fixed at the - beginning of the marketing year ; Whereas lemons are produced in such quantities in the Community that reference -prices should be fixed for them ; Whereas lemons harvested during a given crop year are - marketed from June to May of the next year; whereas reference -prices should therefore be fixed for the period 1 June to 31 May of the following year; Whereas, to take seasonal variations into account, the year should be divided into several periods” and a reference price- fixed for each of these periods; Whereas Article 23 (2) (b) of the abovementioned Regulation stipulates that reference prices are to be fixed at the same level as for the preceding marketing year, adjusted, after deducting the standard cost of transporting Community products -between production - areas and Community consumption centres in the preceding year, by : — the increase in _production costs for fruit and vegetables, less productivity growth, and — the standard rate of transport costs -in the current marketing year ; Whereas the resulting figure may nevertheless not exceed the arithmetic mean of producer prices in each Member State with regard to Article 23 (2) plus transport costs for the current year, after this amount has been increased by the rise in production costs less productivity growth ; () OJ No L 118, 20. 5. 1972, p. 1. () OJ No L 119, 11. 5. 1990, p. 43. whereas the reference price may, however, not be lower than in the preceding marketing year; Whereas producer prices are to correspond to the average of the prices recorded on the representative market or markets-situated in the production areas where prices are lowest, during the three years prior to the date on which the reference price is fixed, for a home-grown product with defined commercial characteristics, being a product or- variety representing a.substantial proportion of the production marketed “over the year or over part thereof and satisfying specified requirements as regards market- preparation ; whereas, when the average of prices recorded on each representative market is being calculated, prices which could be considered excessively high or excessively: low in relation to normal price fluctuations on that market are to be disregarded ; Whereas Commission Regulation (EEC) No 784/90 of 29 March 1990 fixing the reducing coefficient for agricultural prices in the 1990/91 marketing year as a result of the monetary realignment of § January 1990.and amending the prices and amounts fixed in ecus for that marketing. year (°) establishes the list of prices and amounts to which the coefficient 1,001712 is applied in the framework of the arrangements on the automatic dismantlement of negative monetary gaps ; whereas the prices and amounts fixed in ecus-by the Commission for the 1990/91 marketing year must take account of the resulting reduction ; whereas this reducing coefficient shall apply to the prices referred ‘to above; however, this adjustment cannot result- in a lower level of the reference prices than the prices in force during the proceeding marketing year . pursuant to  Article 23(2) of Regulation (EEC) No. 1035/72; whereas this adjustment shall enter into force on the. day of entry into force of Council Regulation (EEC) No 1179/90 (*) fixing the agricultural conversion rates; Whereas, in accordance with Article 284 of the Act of Accession, Portuguese prices shall be used for the purpose of calculating reference prices as from 1 January 1991 ; Whereas, in accordance with Article 272 (3) of the Act of Accession, the prices of Portuguese products will not be used for the purpose of - calculating reference prices, during the first stage of accession ; Whereas the measures provided for in this Regulation are in accordance with the opinion of the Management Committee for Fruit and Vegetables, () OJ No L 83, 30. 3. 1990, p. 102. () OJ No L 119, 11. 5. 1990, p. 1.