Do I need to crush biochar?
charcoal all winter by screening it out of the ashes in the bottom of
the wood stove,
waiting until I figured out how to crush it before putting the biochar
to use. Large-scale farmers powder their
so that it's easy to apply with their machinery, but on the small
scale, crushing biochar is a pain.
In fact, from the multitude of questions about how to crush biochar on
forums (and from my own experience), I suspect that the crushing step
is holding a lot of gardeners back using biochar in the garden.
Is it really necessary to grind biochar?
"Although powder yields the most surface area for nutrient retention, chemical reactions, microbial habitats, and water retention, it also is more likely to become compacted, clay-like, and to cut off oxygen and airflow, which we know is critical for the rhizosphere and plant roots."
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