Help requested - Brunsvigia josephinae rot <:-(

Hans-Werner Hammen
Sun, 16 Oct 2011 16:16:53 PDT

Hello StevenNote that I can be very wrong about my presumption that the mites are the (=primary) reason. However, IF Ken told me "well I have a lot of Hippeastrums in their neighbourhood" or such, for example EUCHARIS also being a "very good" source (permanent reservoir) of this varmin, then I would consider infection from mites to be rather likely. Mites and Funghi might eventually transform the whole bulb into a rotten pulp, particularly when the infection occured earlier, in warm weather, and then, the damaged bulbs are being exposed for a long time to cold and rain, which diminishes the power of the bulb to fight against decay from fungal infection. In WARM climates, I actually would not exclude, that mites could spread through the whole garden. Btw, I detected this mite on Miltonia too. From MY Amaryllids, Amaryllis belladonna never became infected, I don't know why. And Nerine bowdenii but on one occasion, and very superficially. But I also had them on Crinum moorei, wh
 ere they effectuated the whole trunk(=long neck similarly to the false trunk of banana plants) to fatally disintegrate.  
 > Date: Sun, 16 Oct 2011 15:38:05 -0700
> From:
> To:
> Subject: Re: [pbs] Help requested - Brunsvigia josephinae rot <:-(
> Hi Hans I found this quite fascinating... I was telling Ken about some of
> mine that rotted after goats damaged them but mine the whole centre rotted
> out like a cup. Do the bulb scale mites eventually cause core rot too or
> only damage at the leaf base & then another infection may possibly take over
> ?
> Mine could easily be a different sort of rot to Kens but i am interested for
> the future because my belladonna looked "exactly" the same as kens photo at
> first, & then the whole core rotted away before i noticed & treated it & it
> looked a little strange when i got it, so it might have already been
> infected when i bought it. Is this something i should be worried about
> spreading in the garden or is it pretty random in its attacks ?
> Unlike the Brunsvegias that had been severely damaged from sharp hooves
> completely crushing their centres like mashed potato, so a rot was a pretty
> sure thing with them. But all quickly recovered & survived after my
> treatment thank goodness.
> Steven Queensland Australia
> On Sun, Oct 16, 2011 at 2:21 PM, Hans-Werner Hammen <>wrote:
> >
> > Hello Ken, to me, this looks pretty much like a secondary infection from
> > red blotch (Stagonospora curtisii) originating from an infestation through
> > bulb scale mites (Steneotarsonemus laticeps). This would mean, that
> > antifungal treatment is not the key,

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