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Does bokashi fermentation kill pathogens?

 
pollinator
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In our community garden, we are forever on the verge of starting up a bokashi-to-vermicompost system.

One of the things that makes us hesitate is that we don't know what bokashi does to diseased plant material. We have endemic late blight affecting tomatoes (phytophthora infestans), which is the big problem we don't want to add to, and then there is the powdery mildew that usually takes down our curcubits towards the end of the season.

If we throw a lot of mixed, leftover plant material from our gardens into the bokashi fermenters along with people's kitchen waste, will the pathogens be killed during the fermentation?

Just wondering as this process bypasses hot composting, so that process to kill off the nasties will not be happening.
 
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I found your topic in the "Zero Topics."

We have endemic late blight affecting tomatoes (phytophthora infestans)



I have read mixed feelings on this subject.

The acid condition in bokashi is supposed to kill pathogens.

I don't know if it will kill endemic late blight.

This might help:

https://www.azdeq.gov/bokashi-compost-guide
 
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Bokashi done well should kill pathogens in dog or cat waste, so I would think it’d be effective with plant pathogens. I’d still avoid using it right on food plants though if it had cat or dog crap in it, so maybe I’m not that confident. Either way, a slow composting process with diverse inputs including diseased material is probably the best way to develop a locally adapted microbial community that can control those pathogens. (Dr Lee Reich and Dr Howard Garrett both talk about this more in their work) In fact it may be the only/best way to do so longterm without biocides (which are themselves counterproductive and breed tougher pests). A compost pile demonstrates a form of rapid ecosystem succession, and eventually natural selection will favor those organisms that can eat or outcompete or displace those pathogens. This is just as any single species is kept in check in diverse ecosystems. They will likely not disappear, but be controlled naturally to a tolerable level, especially if things are more diverse altogether in the garden.  All that said, late blight is no joke, and I’d encourage more research on Dr Garrett and Reich’s work.
 
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