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RE: palm
- To: "'Medit Plants'" <m*@ucdavis.edu>
- Subject: RE: palm
- From: "* R* <R*@sp.agric.wa.gov.au>
- Date: Thu, 7 May 1998 07:52:10 +0800
Good point Sean
I hadn't thought about Camillo's "palm" being a non palm
I had a chat with a few of our "ento" people yesterday
(entomologists or bug types)
they were quick to point out that with scale even after a successful
application of insecticide the waxy shells remain on the plant and still
need to be removed.
Perhaps you need to check more closely Camillo and see if these bugs are
actually still allive. Pick a few off, shouldn't be to hard to
determine if they are dead.
Cheers, Rod
Rod Randall
Weed Risk Assessment
Weed Science Group, Agriculture Western Australia
Home Page http://www.agric.wa.gov.au/progserv/plants/weeds/Weedsci.htm
"I weed..."
> ----------
> From: Sean A. O'Hara
> Reply To: sean.ohara@ucop.edu
> Sent: Thursday, 7 May 1998 2:36 AM
> To: medit-plants@ucdavis.edu; C.CATARCI@cgnet.com
> Subject: Re: palm
>
> Camillo -
>
> I'm not sure why, but I suspect that the 'palm' you are talking
> about might be Cordyline australis, not a true palm but often referred
> to as a palm. It has a woody trunk and a head of grass-like leaves
> at the end of the stems. True palms have compound leaves which are
> either feather-shaped or shaped like a hand with leaflets radiating
> outwards (like the palm of you hand).
>
> Cordyline australis in our area routine becomes infested with scale
> (small, rounded, brownish 'lumps' over leaves or stems), spider mites
> (light webs and tiny, almost imperceptible spiders), or mealy bugs
> (white cottony/webby masses). All of these are perhaps best dealt
> with using a systemic pesticide, one which is absorbed into the plant
> tissue, killing the pests as they feed on the plant juices. I have
> never seen a plant actually die of these infestations, but the leaves
> typically become dusted with tiny pale spots and the plants becomes
> rather unsightly. When I learned that this tree is called the Torkay
> Palm, as it thrives in the southern English town of that name, I've
> often wondered if it was less prone to these pests due to that more
> humid climate. The idea of cutting off such a specimen's growth to
> remove this infestation might work, but I suspect that the little
> beasties will return later, after the plant resprouts and grows a
> new head. See if you can try the systemic pesticide first. It
> might also be an option to remove the plant and replace it with
> something less prone to this type of attack.
>
> At 05:10 AM 5/5/98 -0700, Catarci, Camillo wrote:
> >Dear all,
> >I have a small palm haunted by bugs. The guy who sprayed insecticide
> all
> >over the plant told me the following day the bugs were all back. He
> >asked me whether he could cut the trunk since the bugs are all in
> there.
> >If he cuts the trunk, will the palm grow back, possibly without bugs?
> >Thanks,
> >Camillo
> >
> >*********************************************************************
> ***
> >*
> >Camillo Catarci
> >Intern, In Situ Conservation of Crop Resources
> >Genetic Resources, Science and Technology Group
> >IPGRI
> >via delle Sette Chiese 142 00145 Rome Italy
> >tel. ++39(6)51892226
> >fax ++39(6)5750309
> >e-mail: C.CATARCI@cgnet.com
> >internet: http://www.cgiar.com/ipgri
>
> Sean A. O'Hara sean.ohara@ucop.edu
> 710 Jean Street (510) 987-0577
> Oakland, California 94610-1459 h o r t u l u s a p t u s
> U.S.A. 'a garden suited to its purpose'
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> Ask me about the worldwide Mediterannean gardening discussion group
>
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