De or het zaadstorting?

The correct Dutch article is:

de zaadstorting

Rule Words ending in -ing: almost always de. See the rule

How to use zaadstorting

the zaadstortingde zaadstorting
this zaadstortingdeze zaadstorting
that zaadstortingdie zaadstorting
our zaadstortingonze zaadstorting
your zaadstortingjouw zaadstorting
every zaadstortingelke zaadstorting
which zaadstorting?welke zaadstorting?
a big zaadstorting / the big zaadstortingeen grote zaadstorting, de grote zaadstorting