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
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