“…Several types of nitrogen fertilizers are produced in Uzbekistan: such as AN (34.4% N), ammonium sulfate (21% N), carbamide (46.2% N), phosphourea (34% N and 8% P2O5), liquid carbamide AN (urea ammonium nitrate , 28-32% N), liquid calcium nitrate (10% N), nitrogen-phosphorus fertilizer (NPF, 22-28% N and 2-6% P 2 O 5 ) and lime ammonium nitrate (LAN, 26-33% N and 2-8% CaO). The last two types of nitrogen fertilizers, NPF and LAN, ordinary phosphorus flour are obtained by mixing into the AN melt before prilling from the Central Kyzylkum [7][8][9] and local limestone [10] in a granulation tower. According to the technical specifications TSh 6.1-00203849-111:2007 NPF and TSh 00203849-138:2017 LAN contains 22-28% and 28-32% nitrogen, 1-6% P 2 O 5 and 2-8% CaO and have a granulometric composition: 1-4 mm -about 95%, not more than 1 mm -less than 3%.…”