fertigate
(ˈfɜːtɪˌɡeɪt) vb,
-ates,
-ating or -ated (Agriculture) to fertilize and irrigate at the same time, by adding fertilizers to the water supply
[C20: from fertilize + irrigate]
ˌfertiˈgation n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014