Without question the use of corn stover to build natural earthen kilns
is a great solution when we are relying on hand labor alone.
See:http://globalwarming-arclein.blogspot.com/2007/07/carbonizing-corn-
in-field.html
We also can conclude that corn stover is the best available source of
large volume biochar. It needs to be central to any program simply to
ensure 100% coverage of the fields with sufficient biochar.
Is there a way to do this in the field with equipment?
Let us return first to best hand practice. From there we can speculate
on how this can be made easier with power equipment.
We do not know how the Indians in the Amazon did this but we certainly
know how they grew corn everywhere else.
In North America, they used a trinary system.
That meant that they cleared a seed hill, likely two plus feet across,
perhaps slightly raised, in which they planted several corn seeds and
also several beans. These hills would have been at least two feet
apart. this means that twenty five percent of the land was been
cropped in this way. They also planted every few hills a few
pumpkins. This provided ground cover for the seventy five percent of
the land not been directly cropped.
An interesting experiment would be to now grow alfalfa in between the
hills in order to fix nitrogen and provide a late fall crop. It
unfortunately would likely take too much water.
This Indian system is ideal for hand work and for the production of
terra preta by hand.
In September,after the corn,beans, and pumpkins are picked, it is time
to remove the drying corn stover and bean waste. The pumpkin waste
will be trampled into the ground fairly easily by now.
Hand pulling the stalks from one seed hill gives you a nice bundle to
carry off the field to where a earthen beehive is built for the
production of Terra preta.
How do we accomplish the same result with the use equipment is a
difficult question. Using a stone boat or wagon is obvious. A
hydraulic grabber of some sort to pull the bunch associated with a
hill would be very helpful. Tying the bundles would also be helpful.
This would allow two workers to clear a larger field quite handily.
After the earthen field stack is set up, the rest is fairly simple. A
wagon full of biochar is taken to the field and each hill is
replenished with biochar before planting. Still a lot of labor but
much easier than the most basic system.
To do this with row agriculture will mean the creation of some fairly
complex lifting and baling machinery. At least we are on the right
track.
Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us.