Yack roadside burnoff revisited

Another fuel reduction burn on the Yack roadside between Jamison Drive and the Kiewa Valley Highway is scheduled for this sunday dec 1 – its 22 months since previous burnoff which resulted in a massive regrowth of exotic grasses and a slow but steady recovery of native flora which is about to be halted. Development of Baranduda has come at a huge cost to this 2km section of high conservation roadside. Its value in ecological terms has diminished immensely since I moved to Baranduda in Dec 1980. What will it look like in another 30 years?

We have failed to protect the biodiversity of this special 2km stretch of roadside remnant vegetation

Is it already too late to protect the biodiversity of this special 2km stretch of roadside remnant vegetation?

You can view more photos of the post Jan 29 2012 burn off here

2 thoughts on “Yack roadside burnoff revisited

  1. Johno wrote

    Chris Lehmann and Johno (and Jazz) today (Nov 30) mattocked all thistles (thousands!), most fleabane, a dozen or so Phalaris (the only ones in this section), some inkweed, prunus and heaps and heaps of Cootamundra Wattle and other non native wattles (that germinated following the last burn) from the key Jamison Drive to the CFA shed section (around 4 hours each worth).

    We took care to get all visible Spear Thistle (including the many small ones) and as we chipped roots out there should be relatively little that survives i.e. no resprouts. Also it was good timing as while many thistles were large (over head height) only a small amount was starting to flower and virtually nil had formed seed.

    However, invariably there will be some we missed and the potential, especially if there’s an inch or so rain post fire, that a heap more existing soil seed base may germinate.

    So I expect there won’t be a huge amount left to chip – but I’d be keen to remove as much Paspalum as possible (a couple of weeks post burn before it seeds again is a good time).

    Accordingly let’s see what weeds eventuates and plan for potential weed follow up on Sat 14th at 11am (to be confirmed by subsequent email closer to date)

  2. I was looking into fire management of Wild Oats Avena spp the other day and found on Florabase West Australia flora that ‘fire conditions favour seed germination and growth’.

    The seeds have a hygroscopic awn that enables them to bury into soil in moist conditions and thus are able to avoid death by fire. If fire occurs after seed is dropped, this benefits their germination.

    To use fire as a weed control method, for this species it would need to be fired before seeds drop ie in spring say September. Being an annual grass, most seeds will germinate within the first autumn and spring, so as Graeme Lorimer says in ‘Key Grass species of Victoria’, ‘Control by …fire..is simple and effective as long as it is done in late winter or spring before the annual seed-set.’

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