Assertion: chestnut's seed | /r/CapableOf | remain viable
Facets:
value: for up to 12 years
type: TEMPORAL
value: in the sediment
type: LOCATION
Source sentences:
text: Since water chestnut overwinters entirely by seeds that may remain viable in the sediment for up to 12 years, repeated annual control is critical to deplete the seed bank.
text: Seeds can remain viable up to 12 years, although most germinate within the first two years.
text: Life history: each T. natans plant has 15 - 20 rosettes; each rosette can generate up to 20 seeds (Maryland Sea Grant 2012); seeds overwinter in the benthic sediments and germinate the following spring; seeds remain viable for up to 12 years (Swearingen et al. 2002).
text: Seeds within fruits can remain viable for up to 12 years.
text: Seeds take about one month to mature and sink to the sediment, remaining viable for up to 12 years.