fertility

noun

1.
the ratio of live births in an area to the population of that area; expressed per 1000 population per year
birth rate birthrate fertility rate natality
2.
the state of being fertile; capable of producing offspring
fecundity
Antonym:
infertility
Derived from:
fertile
3.
the property of producing abundantly and sustaining vigorous and luxuriant growth
prolificacy rankness richness
Derived from:
fertile