NEW YORK ( TheStreet) -- Shares of Monsanto ( MON) rose in premarket trading Wednesday after the agriculture giant's second-quarter earnings beat analysts' estimates. Monsanto reported profit of $1.2 billion, or $2.24 a share, up from year-earlier earnings of $1 billion, or $1.88. Analysts were expecting second-quarter profit of $2.12 a share. Monsanto also raised its 2012 full-year earnings guidance to between $3.49 and $3.54 a share. Its previous 2012 full-year guidance was between $3.34 to $3.44 a share. Monsanto shares gained 1.28% in premarket trading Wednesday to $82.85. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: firstname.lastname@example.org. >To follow the writer on Twitter, go to Alexandra Zendrian.