Gerund used substantively to denote the act or process of retaining; treated as an uncountable noun.
Definitionen
The act or process of retaining; retention. Adequate mulching helps in the retaining of soil moisture.
Gerund functioning as uncountable noun referring to the act or process of retaining
Definitionen
The act or process of retaining; the action of holding or keeping something. Effective retaining of moisture is essential for the growth of the crops.