The Southwest proved especially fertile for territory bands.

But their desire for union has proved fertile.

Is it any wonder that such neighborhoods have proved so fertile for what might be called the social arts?

If she proved fertile, he never would.

Kekaimalu, the first wholphin in captivity, proved fertile when she gave birth at a very young age.

The rich loess soils proved very fertile for cotton cultivation.

The female offspring proved fertile, but rarely so for the males.

But the union, if such it may be termed, proved fertile.

Qin music, in particular, has proved fertile for his future exploration.

The result is a book that, whatever the eventual fate of its central arguments, is bound to prove fertile.