SUMMARY The effect of Nitrogen fertiliser dosis and the Age of Seedling on the yield of lettuce (Lactuca sativa L.) Great Leads Varity.. The research wits carried out at Kopeng Getusan area Bluce 25 June up to September 28, 1989. The type of soil in Andosol at an altitude of 1450 metera above sea level.. Taia research nas been conducted to uvaluate the effect of Hitrogen fertiliser and the a…