nitrogen 2003 53 1 references that include a section mark are found in the internet cited by deborah kramer domestic survey data and tables were prepared nicholas muniz statistical assistant world production table was regina r coleman international coordinator us ammonia 8 77 million metric tons mt of contained about 14 decrease from 2002 spikes natural gas prices early year reduced demand late summer led to apparent consumption however declined only 2 signi cant increase imports helped make up for fall jumped 22 those with most coming canada russia trinidad tobago 89 domestically produced consumed united states used fertilizer applications global 109 same as china india leading producers together accounting