Plants
Grasses
Sighting 4570592

Nassella neesiana

Chilean Needlegrass at Mount Majura

Nassella neesiana at Mount Majura - 7 May 2024 04:24 PM
Nassella neesiana at Mount Majura - 7 May 2024 04:24 PM
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Identification history

Nassella neesiana 9 May 2024 waltraud

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User's notes

in grassy woodland uphill of Seed Node; Mapped with Field Maps / Untreated weeds the 3rd time; area with CNG is expanding.

2 comments

Mike wrote:
   9 May 2024
This species establishes large seedbanks, which can persist for many years. In Australia, seedbank densities have been recorded as high as 11,377 seeds/m2, and even higher densities have been observed in New Zealand. It was suggested that a seed-bank with a density of 7000 seeds/m2 would take 12 years to reduce to 10 seeds/m2 without additional seed input. This suggests that in areas where eradication has been seemingly achieved, the seedbank would require monitoring for over 12 years to prevent re-establishment of this species.
Humphries, T.; Florentine, S.K. A Comparative Review of Six Invasive Nassella Species in Australia with Implications for Their Management. Plants 2021, 10, 1036. https://doi.org/10.3390/plants10061036
waltraud wrote:
   16 May 2024
Mike you need to tell Parks, they don't believe me ...

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