[Growwine] vidal

Laura laura-sabourin at sympatico.ca
Tue Jul 8 23:29:19 EDT 2008


copper can burn varieties which are sensitive , there is a list in OMAFRA publication 360 or just google the variety + copper 

never spray it in bright sunlight , dawn or dusk is best 
use lime to be on the safe side

I don't use lime with the cu oxychloride but for certain you need it with bluestone 

I have not tried Kocide but have heard good things from south of the border 

Laura 


  ----- Original Message ----- 
  From: Phil Ryan 
  To: growwine at littlefatwino.com 
  Sent: Tuesday, July 08, 2008 8:14 PM
  Subject: Re: [Growwine] vidal


  Hi Laura and Anthony;
  I have followed this with some interest as I have some Downy that needs treatment. I keep hearing that tender new growth is burned by copper. When is it safe to use copper and do you follow the lime mixing that the OMAF book recommends? Apple farmers around us apparently use a product called Kocide to apppy copper, but its not approved for grapes.
  Phil Ryan
  lurking near SImcoe
    ----- Original Message -----
    From: Canada Vintage 
    To: growwine at littlefatwino.com 
    Sent: Tuesday, July 08, 2008 5:37 PM
    Subject: Re: [Growwine] vidal


    In Quebec, we are told that Copper will not eradicate DM. Straight from the MAPAQ literature.
    In fact I tend to believe them since I have tried copper without success.

    Anthony Carone (Zone 4b-5a)
    Canada Vintage - Carone Vineyards, a division of Carone Enterprises

    ~~~~~~~~~~~~~~~~~~~~~~
    www.CanadaVintage.com
    ~~~~~~~~~~~~~~~~~~~~~~



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    From: laura-sabourin at sympatico.ca
    To: growwine at littlefatwino.com
    Date: Mon, 7 Jul 2008 17:55:14 -0400
    Subject: Re: [Growwine] vidal



    Not true Anthony :-( in fact backwards 
    Copper will kill on contact, it is NOT preventative 

    Laura 
      ----- Original Message ----- 
      From: Canada Vintage 
      To: growwine at littlefatwino.com 
      Sent: Monday, July 07, 2008 4:45 PM
      Subject: Re: [Growwine] vidal


      copper is only a preventative spray. It will not cure any DM infections present in your vineyard.
      You need to get a more serious fungicide (Abound, Ridomil work for post infections).
       


      Anthony Carone (Zone 4b-5a)
      Canada Vintage - Carone Vineyards, a division of Carone Enterprises

      ~~~~~~~~~~~~~~~~~~~~~~
      www.CanadaVintage.com
      ~~~~~~~~~~~~~~~~~~~~~~



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      From: laura-sabourin at sympatico.ca
      To: growwine at littlefatwino.com
      Date: Mon, 7 Jul 2008 08:31:20 -0400
      Subject: Re: [Growwine] vidal



      HI Steve

      what were the various other solutions ? So far I have only found that copper works for downey 

      Laura 

        ----- Original Message ----- 
        From: Steve Melchiskey 
        To: growwine at littlefatwino.com 
        Sent: Sunday, July 06, 2008 10:07 PM
        Subject: Re: [Growwine] vidal


        We had downy in a small part of our vineyard last year that attacked the tendrils first, then spread to leaves, shoots and grapes. My suggestion is to cut it out now, all of it, anything that is white looking and take it far out of the vineyard and destroy it. keep doing t his all season and continue spraying (we are organic, so we used copper and various other solutions).

         This kind of sanitation is key to keeping the spread limited.
        best,
        steve
        maine coast vineyards

        On Jul 5, 2008, at 8:04 PM, vigdespins at aol.com wrote:


          Very good chance it could be downy mildew, and resembles a shepherds hook.

          Gilles in Sabrevois.


          ---- Original Message ----
          From: Larry Paterson <littlefatwino at trytel.net>
          To: Growwine List <growwine at littlefatwino.com>
          Sent: Sat, 5 Jul 2008 6:06 pm
          Subject: [Growwine] vidal




          ----- Original Message ----- 
          From: Margaret Marshall 
          To: Larry Paterson 
          Sent: Saturday, July 05, 2008 5:06 PM
          Subject: vidal


          Hi Everyone!  We have something in our vidal, only at one end of the field closest to wooded areas.  It is like powdery mildew, but it is not on the leaves, only on the tender ends with large tendrils (our vines are very vigorus).  No one seems to be able to identify the problem.  We operate our vineyards with a two week rotating spray program.  Do any of my esteemed coleagues recognize this problem?  Ciao, Margaret
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