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Old August 8, 2017   #1
svalli's Avatar
Join Date: Feb 2006
Location: Vaasa, Finland, latitude N 63°
Posts: 740
Default Effective micro-organisms against botrytis?

I have had problem with botrytis in my greenhouse for many seasons now. I have tried all sorts of household remedies, but nothing seems to be really effective. There is not much home gardening products available here and now all agricultural fungicides and pesticides require training and license to purchase. Anyway I would not like to use any chemical fungicide, so I am in need of a biological ways to prevent botrytis.

This year I discovered effective micro-organisms, which are also used for bokashi composting. I have good insulated compost bin for kitchen waste, so I am not yet getting into the bokashi stuff, but I ordered EM concentrate made by an Austrian company called Multikraft. I activated it by fermenting the EM and molasses and have now been spraying my tomatoes with it. I got the fermenting done a bit too late, so I had already botrytis on three tomato stems, before I could start spraying.
I have been spraying the plants at least twice a week for a month now and it looks like this could help. One of the plants had the mold all around the stem and it killed that branch. In the two other ones the mold stopped spreading and looks like it has dried up.
I can't find info on the manufacturer's website that what exactly is in the EM concentrate. It just says that there is lactic acid bacteria, yeast, photosynthesis bacteria and other micro-organisms. I know that there are some products based on certain micro-organisms which work against botrytis, but those products are only available for big commercial greenhouses.

Has anyone here tried spraying the micros used in bokashi to their plants?

"I only want to live in peace, plant potatoes and dream."
- Moomin-troll by Tove Jansson
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