Re: [compost_tea] Foliar Application of Grape Vines

From: <soilfoodweb_at_aol.com>
Date: Fri, 6 Jun 2003 22:33:09 EDT

The SARE grant we have worked on showed that IF the fungal biomass was
adequate on hte leaf surfaces, then protection of the leaf surfaces was possible.
When fungal biomass in the tea was not adequate, then we had trouble
maintaining protection.

Bacterial biomass was always high in the teas we applied, but late in the
season, we had trouble protecting the leaf surfaces if fungal biomass was
limited.

We were able to reduce sulfur or other chemical sprays from 10 to 14 per
season down to one. Not bad for a new technology where we are still working on
figuring out exactly how often and what concentration to apply!

Roger Hanson at Paso Robles Vineyard has had two successful seasons
controlling mildew and other pathogens. We work with other growers that are
successful. The key is adequate bacterial AND fungal coverage on the leaf surface.

Elaine Ingham
President, Soil Foodweb Inc.
www.soilfoodweb.com
SFI Oregon, USA
SFI Australia
SFI New York
SFI Europe
SFI New Zealand

"Hope is not a feeling. It is not the belief that things will turn out well,
but the conviction that what we are doing makes sense, no matter how things
turn out." -- Vaclav Havel, former President of the Czech Republic





Received on Fri Jun 06 2003 - 23:56:42 EDT

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