[NAFEX] Don't use Bt [SEC=UNCLASSIFIED]

ADAMSON, Karl Karl.Adamson at apvma.gov.au
Mon Jun 22 19:03:34 EDT 2009


Kevin,
To highlight the extremely specific nature of BT strains I would mention
that beekeepers are using BT (I think from memory its the Aizawi strain)
for the control of wax moth in beehives.  BT appears harmless to bee
larvae and the Aizawi strain appears to be the only strain that controls
wax moth. So even amongst strains you get targeting of different species
of moths.

I have not looked to see if there is any data examining BT effects on
yellow jacket larvae, but I'd put money on it being harmless.

Karl

>From: Kevin Moore <aleguy33 at yahoo.com>
>not really sure. there aren't many around these days. they always turn
up dead. They used to be in everything before I 
>sprayed the Bt.
>
> Too late. I sprayed (dusted) my garden with Bt three years ago and it 
> appears to >have taken hold. It is still killing caterpillars in my 
> yard and garden, so I >know for a fact it was a living organism.
> It is well established now, so there is >little I can do about it. I 
> agree that Bt is not a good idea, generally.

>How can you tell that the caterpillars are dying from Bt?

>Alex

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Message: 3
Date: Sat, 20 Jun 2009 16:55:10 -0400
From: "Lori Rizzo" <larizzo at charter.net>
Subject: Re: [NAFEX] Trouble with establishing a kiwi
To: "'North American Fruit Explorers'" <nafex at lists.ibiblio.org>
Message-ID: <004601c9f1e9$66a5ddb0$0a00a8c0 at D993WN91>
Content-Type: text/plain; charset="us-ascii"

The same thing happened to me last year - had two kiwis, were doing
great, then I noticed them drooping and in 2 days they were dead.  I
couldn't find any parasite, etc. when I pulled them. Red clay soil,
other plants around them were fine.  

 

Lori

 

Lori Rizzo, RN BSN MBA

Health Care Quality Improvement

Pet Training & Behavior Improvement!

Maryville, TN

larizzo at charter.net

 

  _____  

From: nafex-bounces at lists.ibiblio.org
[mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of
Hilborn.E at epamail.epa.gov
Sent: Saturday, June 20, 2009 8:40 AM
To: North American Fruit Explorers
Subject: [NAFEX] Trouble with establishing a kiwi

 

I need some help with a kiwi problem..

I am trying to establish kiwis this year. I am having trouble with my
female Saanichtons. I planted one, it seemed to thrive, then
approximately 1 month at the site, the leaves wilted, dropped.  It was
showing so signs of leafing out again despite green cambium, so I
replaced it with a vigorous, actively leafing out female about 4 weeks
ago.  Now that plant is starting to wilt at all of its terminal leaf
clusters.  All this difficulty has occurred at one this site.

 

In the arbor area, I also have another female Saanichton, a male
pollinator and two hardy kiwis and a muscadine. They are all vigorous
and growing rapidly.

 

I have seen no pests so far on the kiwis. I have red clay soil, about
6.2 pH, I add bone meal to the planting hole, then mulch the plants with
composted stable waste.  They are protected from weeds and staked to
bamboo for support. They are all in full sun. We have had a rainy year,
but with periods of heat and dry. The soil has been moist overall,
though the site does drain well.  All the plants are planted soil level
to slightly high.

 

Any thoughts on this one site or what is wrong with these two successive
kiwis?  I'd like to use the site if possible as I have limited space.

 

Thanks,

Betsy Hilborn

7a NC

 

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Message: 4
Date: Sat, 20 Jun 2009 17:58:30 -0400
From: "Randy Burd" <burdrs at gmail.com>
Subject: [NAFEX] Fruit tree prognosis
To: <nafex at lists.ibiblio.org>
Message-ID: <43EEBFBFAB614B3986730D234F7EAB33 at home95ca408aae>
Content-Type: text/plain;	charset="us-ascii"

I need some advice on how much I need to worry about newly planted fruit
trees in my orchard. 

I purchased whips this spring (apples, cherries, peaches, pears) that I
healed in until planting. The problem is that the trees broke dormancy
while healed in and had their new growth nipped one night when one son
left the fence open. To make matters worse, the landscaping company that
planted the trees couldn't get the trees in until the first week of June
(a hot week here is Maryland). 

The orchard has be in for two weeks. None of the trees have died (all
wood has an excellent appearance and is green under the bark) but, after
all that has gone on, many have little new growth, some have very few
leaves, and some have clearly viable but wilting leaves and shoots. The
apples faired much better than the pear, peach and cherry trees--most of
the apples really should be fine.

What should I do? What can I expect?

Thanks.



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