RE: Brazilian tomato problems cont.

lena@ufrrj.br
Tue, 15 Jun 1999 13:49:16 -0300

Date sent: Mon, 14 Jun 1999 02:33:45 -0700
From: "Anton Doroszenko (TL, Fld Crp)"
<A.DOROSZENKO@CABI.ORG>
Subject: RE: Brazilian tomato problems
To: "'Douglas M. Hinds'" <dmhinds@acnet.net>,
"Anita Graf (Staff)" <agraf@agecon.uga.edu>, sanet-
mg@ces.ncsu.edu
This sounds about right. There is apparently a small borer (more
problematic) and a large borer.
How can I get ahold of these CAB Asbracts from here? Is there
access over the internet? Also, to add to the discussion. The area
for planting is in the state of Rio de Janeiro on a plot of land that
has been used for organic expiramentally agriculture (at the
UFRRJ) for at least 10 years?? The area is lowland with hot, humid
and rainy summers and cool, dry winters. I can check on the soil
type if anyone is interested.

Lena
> I found 31 hits on the CAB ABSTRACTS database since 1984 (I didn't check
> earlier than that). Most papers refer to Neoleucinodes elegantalis
> (Lepidoptera: Pyraustidae) as "tomato fruit borer".
>
> > -----Original Message-----
> > From: Douglas M. Hinds [SMTP:dmhinds@acnet.net]
> > Sent: 12 June 1999 07:16
> > To: Anita Graf (Staff); sanet-mg@ces.ncsu.edu
> > Subject: Re: Brazilian tomato problems
> >
> >
> > My bilingual CAB Lexicon of Entomological and Related Terms indicates that
> > Neoleucinodes elegantalis (Gn.) is "a perforador del fruto del tomate"
> > (the definition is from Venezuela), with NO English common name given,
> > which suggests that this pest may be restricted to the Latin American
> > tropics and is not certainly a fungus.
> >
> > A search of the University of Hawaii database using Carlweb turned up no
> > matches, which reinforces that supposition. Using Uncover gave the same
> > negative results. Is this pest similar to a pin worm or a grub or a
> > weevil?
> >
> > On 11/06/99 at 2:43 PM Anita Graf (Staff) wrote:
> >
> > >Often times "sustainable" amounts to
> > >figuring out if something ought to be grown in a specific place in
> > >the first place.
> >
> > What criteria are you applying to whether "something ought to be grown in
> > a specific place"?
> >
> > >it may be time to reasses the planting regime from the beginning.
> >
> > Could you do that for us?
> >
> > >Uh, not having anything technical to add to this discussion, I would
> > >still like to make a comment.
> >
> > Obviously. But why? Was this what you consider to be a philosophic
> > contribution, or perhaps metaphysical? You began with the following
> > supposition that was far from established:
> >
> > >If soils are fertile and well cared for and other basic
> > >sustainablity steps have been taken
> >
> > I suggest that attention be given toward resolving the underlying
> > problems, rather than supposing a given crop - in this case, a tropical
> > fruit with a multitude of varieties that have adapted to a multitude of
> > soil and climatic conditions, "ought not be grown in a specific place".
> >
> > Lastly, a careful selection of seed sources for relatively resistant (to
> > known local diseases), natural (not GMO) varieties is always a good place
> > to start. The next step would be to contact the Brazilian / Portuguese
> > equivalent of a "Centro de Investigacion sobre Control Biologico" or a
> > "Laboratorio de Reproducion de Organismos Beneficos", in order to
> > determine what they've got or could breed for you. (You will probably
> > have anticipate the pests that are likely to attack and contract the
> > breeding of both preventive and remedial beneficial organisms, to order.
> > And may have to contract a series of tests first, in order to determine
> > which variety or strain of which organism will prove most effective).
> >
> > Douglas Hinds
> >
> > *********** REPLY SEPARATOR ***********
> >
> > On 11/06/99 at 2:43 PM Anita Graf (Staff) wrote:
> >
> > >> There are no really good remedies for it here, either. Late blight is a
> > >> major problem for tomato and potato growers in some areas, regardless
> > of
> > >> what chemicals they use. We deal with it on our farm by using long
> > >> rotations (five years) and strict field sanitation (all residues
> > >> incorporated immediately after last harvest).
> > >>
> > >Uh, not having anything technical to add to this discussion, I would
> > >still like to make a comment. Often times "sustainable" amounts to
> > >figuring out if something ought to be grown in a specific place in
> > >the first place. When nature starts a full-on combat of something,
> > >it can sometimes mean that that something just isn't appropriate to
> > >the area. If soils are fertile and well cared for and other basic
> > >sustainablity steps have been taken and still it takes an arsenal of
> > >toxic chemicals (organic or not) to get a harvest, it may be time to
> > >reasses the planting regime from the beginning. Granted, I don't
> > >think that this kind of thinking comes naturally to us humans who are
> > >forever trying to fit square pegs into round holes, but it should be
> > >considered.
> > >
> > >Anita
> > >
> > >
> > >Anita Graf
> > >313-F Conner Hall
> > >Dept. of Agricultural and Applied Economics
> > >University of Georgia
> > >Athens, GA 30602-7509
> > >(706) 542-1915 phone
> > >(706) 542-0739 fax
> > >agraf@agecon.uga.edu
> > >
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