[Stoves] Fuel production, biochar, and feeding the stove in 2040

Crispin Pemberton-Pigott crispinpigott at gmail.com
Wed Aug 24 19:50:01 PDT 2011

Thanks Alex.

Dr AD:

This is on the page: " When growers still growing in soil incorporate or
surface apply animal manure or other organic materials, such as straw,
levels of CO2 in the greenhouse will be increased during the breakdown
process. The amount of CO2 produced depends on the stability of the mulch
and the activity of the microorganisms, which convert the organic material
into CO2. Production of CO2 from rotting manure will only be significant for
about one month following incorporation. In some cases organic growing media
such as coconut coir will increase the CO2 level in the greenhouse to 1,200
ppm during the night. This is usually not a problem, as the levels will drop
quite rapidly at daylight."

So it seems your shielded walls can be supplemented by putting coconut coir
and manure on the ground to generate CO2 during the night and as it notes,
the uptake is greatest early in the day anyway, so the benefit is not lost.

If people are going to apply a mulch, it should be coconut coir when
available. No doubt your daughter can tell us what microorganisms are needed
to break it down during the night!


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