** Shares of Nufarm NUF.AX fall 24.1% to A$3.05, their lowest levels since February 7, 2003

** Stock set for its weakest session since March 19, 2019, if current trend holds

** The agricultural technology co posts a HY statutory NPAT of A$29.8 million, compared with A$49.2 million last year

** NUF is top loser in the ASX 200 benchmark index .AXJO

** Co reports an underlying EBITDA 9% below Citi's estimates and 15% below consensus estimates

** About 2 mln shares change hands, 2x the 30-day average of one mln shares

** Stock down ~14% YTD, including current session's moves

(Reporting by Manasi Dasa in Bengaluru)

((Manasi.DasaSundeep@thomsonreuters.com;))