Laura,
Most of my experience has been with wine grapes thus seedless grapes are a
bit different, same principles though.
I would need to know soil test results, folia test results etc. If the soil
has had lime, rock phosphate etc applied to the specifications of an
Albrecht type soil test (base saturation is now around 70% Ca and other
minerals are getting close to the correct ratios then the problem is with
availability of the minerals in the soils, that is biological so CT
applications and other soil improvers will begin to release Ca etc into the
vines.
In the short term Nutritech have a product called Life lime it is certified
organic BFA and is made from micronised calcite combined with fulvic acid. I
have not used this product myself. There may be other products similar that
are certified organic that you may be able to use that are near you?
Regards Mike Harvey.
www.composttea.com.au
--- Original Message -----
From: <laura_s_at_vaxxine.com>
To: <mharvey_at_westnet.com.au>
Sent: Thursday, April 17, 2003 11:18 PM
Subject: Re: [compost_tea] CT effect on wine
> HI Mike
>
> I had serious "shatter" in my red seedless table grapes last year. This is
> usually "fixed" by an application of liquid calcium which of course we
> can't use. ANy suggestions ?
>
> At 10:13 PM 17/04/2003 +0800, you wrote:
> > Anthony, We have very little problem with mites, there are predatory
> >mites that will control the bud mites etc. Interesting to note that using
> >CT in preferance to sulphur will tend to encourage predatory mite
> >populations as the sulphur will kill most of these organisms (the
> >exception is Typhlodromus doreenae). The predatory mite Amblyseius
> >victoria is susceptible to sulphur sprays. eliminating pesticides will
> >encourage natural control of these organisms. As you would know as you
get
> >plant sap brix to a true brix of 12 or above and pH nearer 6.4 pests
such
> >as these become negligible. brix by up to 2 degrees. It may be that the
CT
> >was helping to improve Ca levels and thus folia sprays were more
> >effective?? No data to prove or disprove just a theory at the moment.
Glad
> >to hear you are monitoring using Reams approach have you been able to
> >measure brix improvements using CT? I have measured small movements
> >upwards using CT in other crops but have not measured it in grapes after
> >using CT? and yes it will affect CT performance. However you can
have
> >all the right minerals in the soil in the right ratio and balance etc
but
> >if the biology is out of balance (bacterial to fungal etc) then it will
> >not work. So we need both soil chemistry and biology (and physics) to be
> >functioning as they were designed to in the soil. Regards Mike Harvey
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Received on Thu Apr 17 2003 - 22:22:40 EDT