Re: [compost_tea] Root Knot Nematodes

From: Jason Austin <jason.austin_at_shaw.ca>
Date: Sat, 02 Aug 2003 20:00:19 -0700

Hi Shane

I enjoyed reading your last three posts.

I had been curious myself about just applying mollasses, and another
lister posted this as a question on the list on July 15th, but I believe
there was no reply then.

What type of molasses was used - sulphured or unsulphured?

Jason


Shane Gishford wrote:

> If you don't have predatory nematodes or fungi to innoculate into the
> soil where out worst problem are (mainly in very light sandy soils) we
> have found large amounts of molasses up to 40 L/Ha per crop has
> stopped the problem. There was a large problem in the Water and Rock
> Melon area I now work in just before I stared there 4 years ago. They
> found this level of molasses has controlled the root knot nematodes
> and I have not seen a problem since I have started and they not had to
> use a nasty chemical for this problem in the last 4 years that I know
> of. The whole area has sung over to use this in every crop they plant
> and this is on of the recognisted areas for melon growing in Australia.
>
> I have seen this also work in tomatoes. I know they live in other
> soil but it is the very light sandy soils that we see the most plant
> damage to the point of nearly totally destroying the crop ie no yield
> at all.
>
> I'm not sure of the mechanism of how it works but we believe that the
> bacterial bloom we get from the molasses allows the bacterial to coat
> the roots and so leave no room for the nematodes to be able to infest
> the root. Maybe Doc E. would like to comment on this.
>
> Shane Gishford
>
>
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Received on Sun Aug 03 2003 - 00:57:19 EDT

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