fēcundo, āre, v. a. [fecundus],
to make fruitful , to fertilize (poet. and in post-class. prose): (Nilus) viridem Aegyptum nigrā fecundat arenā, Verg. G. 4, 293; Claud. I. Cons. Stil. 239; Pall. 3, 9 al.
fēcundō —, —, āre fecundus, to make fruitful, fertilize : Aegyptum harenā, V. ...
An Elementary Latin Dictionary