This bulletin presents the results of the analysis of 2,744 official samples of commercial fertilizer taken during the period of July 1, 2015 through June 30, 2016 by the field inspection staff. The samples represented approximately 51,796 tons of fertilizer out of the approximately 1,040,941 tons sold during this period. The Laboratory made 2,290 nitrogen, 1,870 phosphorus, 2,042 potassium, and 1153 secondary and minor element and certain other analyses on these samples.