1838 Alexis Millardet, botanist who developed the first successful fungicide.

• Alexis Millardet: France's forgotten mycologist

  Original Research Article
• Mycologist, Volume 18, Issue 1, February 2004, Pages 23-26
• PETER G. AYRES

http://blogs.uoregon.edu/bi432/files/2014/10/Ayres_Millardet-otqd8u.pdf