[NAFEX] organic-ish pest control in plums and peaches

Hélène Dessureault interverbis at videotron.ca
Mon Jun 9 09:23:25 EDT 2008


You can replace latex paint with spray lime (the kind that used to be 
applied as whitewash). It was used before latex paint came on the market. It 
protects the trunk against sunburn, rodents to some extent, and borers.

Hélène, zone 4

----- Original Message ----- 
From: "Stephen Sadler" <Docshiva at Docshiva.org>
To: "'North American Fruit Explorers'" <nafex at lists.ibiblio.org>
Sent: Friday, June 06, 2008 2:05 AM
Subject: Re: [NAFEX] organic-ish pest control in plums and peaches


> Bonide lime sulfur is a dormant oil with calcium sulfide.  It can control
> peach twig borer, applied as directed as a dormant oil once in late fall 
> and
> once before bud swell in the spring.  Peach twig borer is a different
> creature than peach borer, and they are controlled differently - although 
> a
> healthy plant may be less susceptible to either.  If you have peach borer,
> you could spray the trunks weekly during moth activity (for most areas, 
> July
> and August) with Bacillus thurengiensis, Bt.  You can also, or instead,
> drench the trunks with parasitic nematodes, S. carpocapsae, in spring or
> fall.  If you're not committed to organic controls, you can paint the 
> trunks
> with white latex paint, providing a barrier to borer entry.
>
> ~ Stephen
>
> -----Original Message-----
> From: nafex-bounces at lists.ibiblio.org
> [mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of Steve
> Sent: Wednesday, June 04, 2008 8:41 PM
> To: North American Fruit Explorers
> Subject: Re: [NAFEX] organic-ish pest control in plums and peaches
>
> Steven Moize wrote:
>> Hi all,
>>
>> I have a question about using Bonide lime-sulfur spray on my plums for
> borers.  I assume they are borers.  There are tiny (1cm) larva at the pit,
> bored in from the outside.
>>
>> Any info on this product?  Any suggestions?
>>
>> Steve
>>
> Borers bore into the bark and wood of fruit trees.
> Do your larva look about like this?
> http://tinyurl.com/4ohjlf     (click where it says "click here" to see
> the picture)
> Do they leave scars on the fruit that start out looking like this?
> http://www.uvm.edu/~organica/OrganicOrchardInformation/OrganicIPM/checklisti
> mages/arthropods/PC/DSC_0009.jpg
> Isn't lime-sulfur used as a fungicide? You need an insecticide to
> control insects, not a fungicide.
> Plum curculios lay eggs in plums (and other fruit) in the spring right
> after the flowers have finished and the little fruits start forming.
> If you already have the larva in your fruit, it's too late for the year.
> Be ready for them next year.
> If only a small portion of your plums have been infested, pick off all
> the ones with the scars on them and send them far away (trash) or drop
> them into a bucket of water and leave them in there until you are sure
> the larva are dead.
>
> Steve (the other one.... in the Adirondacks)
>
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