Go Back   Science Forums > Physical Sciences Forums > Earth science > Terra Preta
Closed Thread
 
LinkBack (148) Thread Tools
Old 10-26-2006   #191 (permalink)
Turtle's Avatar
Percipient

Platinum Subscription
Sponsor

 



Not Ranked  0 score     
Question Re: "Poems" for Terra Preta

Quote:
Originally Posted by erich
Europe's Product Oriented Environmental Management System -- "Poems" for short

If only the US would share these TRUE costs with the public than we could discern their True value or determent.

http://energypriorities.com/entries/...ironmental.php
Very nice; sounds reasonable. If only you had answered the question about what kind of wood the Missouri company is using and where it comes from and whether or not it is contributing to deforestion. What is the true cost of the Missouri operation in your assessment?


----------------
semantics is not always just pedantic quibbling. ~ douglas r. hofstadter
Old 10-26-2006   #192 (permalink)
Turtle's Avatar
Percipient

Platinum Subscription
Sponsor

 



Not Ranked  0 score     
Talking Re: Terra Preta

How 'bout some tidbits to clarify my position on terra preta? I think using charcoal and other additives found in Amazonian dark soils to improve plant production is worthwhile. I do not think it is practicle to attempt to ameleorate global warming by sequestering carbon in soils ala terra preta. I think the best way to produce horticultural charcoal is by using a distributed system of solar trough ovens to produce charcoal from the excessive wood that centuries of fire suppression have allowed to build up in our forests.
Link:
Solar Parabolic Trough Charcoal Oven


----------------
semantics is not always just pedantic quibbling. ~ douglas r. hofstadter
Old 10-26-2006   #193 (permalink)
Terra Preta Nova's Avatar
Curious


 
Terra Preta Nova will become famous soon enough
 



Not Ranked  0 score     
Re: Terra Preta

Quote:
Originally Posted by Turtle
I'll let the fellas here promoting charcoal sequestering as a glob
al warming "cure" toot their own horns.
They have been bringing up links and references. You have been saying they are incorrect.

So back up your claim that such a position is incorrect.


Quote:
Originally Posted by Turtle
Did you already know I gardened with charcoal soils this year? I didn't think so.
Do you often exhibit a shrug when you are wrong? Because in this 20 or so page thread, you mentioned the use of charcoal in your garden more than once. Which I had read before I signed up.


Given no one seems to have referenced Duane Johnson redrok dot com, you might wish to visit his web site on Heilostats and consider joining his mailing list on the topic rather than taking wild design stabs at making a device to drive off water.
Old 10-26-2006   #194 (permalink)
Terra Preta Nova's Avatar
Curious


 
Terra Preta Nova will become famous soon enough
 



Not Ranked  0 score     
Re: Terra Preta

Quote:
Originally Posted by Fishteacher73
The problem with biomes such as tropical rain forests and tropical reefs is that there is such an abundance of life that the nutrients available are all used IN the life and the soil/water is VERY nutrient poor.
This position does not reflect the 1700-2200 year old Carbon being found in Terra Preta.

Quote:
Originally Posted by Fishteacher73
The standard method in the Amazon is the "slash and burn".
That is the method today, yes.

Quote:
Originally Posted by Fishteacher73
This is when the forresty is cut and burned prior to cultivation (the source of charcoal).
Based on the data I have seen, burning does not get you charcoal. You need heat and lack of oxygen. Burning is the reaction of something with oxygen.

Quote:
Originally Posted by Fishteacher73
This returns all the various nutrients stored in the plant diversity to the soil. The problem is when the crops are harvested, the nutients are then removed with the crop and reasonably infertile soil is left.
And this is a different problem than any other farm operation exactly how?

Quote:
Originally Posted by Fishteacher73
This sounds like a poorly researched and biased show that this came from.
And you have data to refute the work being done on Terra Preta? Please post these links.

Quote:
Originally Posted by Fishteacher73
The only real way to allow for farm land to stay fertile is either through artificial fertilization (not the best) or a cycle of crop rotation and allowing fallow periods upon the field.
Yet the method you are suggesting is exactly what what you say is a problem when you state:

Quote:
Originally Posted by Fishteacher73
This returns all the various nutrients stored in the plant diversity to the soil. The problem is when the crops are harvested, the nutients are then removed with the crop and reasonably infertile soil is left.
Most crop rotations are done to either bring minerals from the sub-soil to the top (trees, alfalfa) or to add some nitrogen to the soil (soybeans)

But feel free to post data showing that adding charcoal to the soil is a placebo effect.
Old 10-26-2006   #195 (permalink)
Terra Preta Nova's Avatar
Curious


 
Terra Preta Nova will become famous soon enough
 



Not Ranked  0 score     
Re: Terra Preta

Quote:
Originally Posted by Turtle
I do not think it is practicle to attempt to ameleorate global warming by sequestering carbon in soils ala terra preta.
Why? The research is showing some of the carbon is staying in the soil for 100s of years.


Quote:
Originally Posted by Turtle
I think the best way to produce horticultural charcoal is by using a distributed system of solar trough ovens to produce charcoal from the excessive wood that centuries of fire suppression have allowed to build up in our forests.
If you would visit redrok dot com you would see that other design methods exist, and they have been demonstrated to generate higher tempratures.

While 'excessive wood' exists, wood is a limiting factor for CO2 to Carbon char. Using crop wastes as the source of bio-char increases the CO2 to Carbon conversion ratio. Not to mention killing various things that effect plants which might be 'hiding' in the crop waste. Don't discount the use of the outgasing material as a way to generate power via stirling or internal combustion engines. wood gas was used during WWII as a substute for harder to obtain gasoline.

Generation of units with a low enought cost, high enough heat and ease of operation while avoiding the known carcinogen effects of the resulting tars will be the engineering challenge.
Old 10-26-2006   #196 (permalink)
Turtle's Avatar
Percipient

Platinum Subscription
Sponsor

 



Not Ranked  0 score     
Arrow Re: Terra Preta

Quote:
Originally Posted by Terra Preta Nova
They have been bringing up links and references. You have been saying they are incorrect.
The crux of the debate is whether or not humans are driving global warming and in the threads here on the topic are the ongoing postings of conflicting 'evidence' one way or the other. Because the issue is not settled we only have our opinions as to what the conflicting data means and I am of the opinion global warming is a planetary mechanics phenomenon.

Quote:
Originally Posted by terraP
So back up your claim that such a position is incorrect.
I have done so in the multitude of threads I have alluded to.

Quote:
Originally Posted by terra
Given no one seems to have referenced Duane Johnson redrok dot com, you might wish to visit his web site on Heilostats and consider joining his mailing list on the topic rather than taking wild design stabs at making a device to drive off water.
Oh my! Forgive me for conducting a scientific experiment on my own.
Until - and if - you reach the prerequisite posts to list a link, here is the site you recommended:
http://www.redrok.com/main.htm



----------------
semantics is not always just pedantic quibbling. ~ douglas r. hofstadter
Old 10-26-2006   #197 (permalink)
erich's Avatar
Understanding


 



Not Ranked  0 score     
Re: Terra Preta

Turtle: I think they use hardwood slabs, and other logging waste, but when the next time they call I will question about it.


Here's a new TP page I found yesterday:

http://www.bidstrup.com/carbon.htm
Old 10-26-2006   #198 (permalink)
Michaelangelica's Avatar
Creating

Editor
Basic Subscription
Sponsor

Location:
North of Sydney Australia
 
Michaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond repute
 



Not Ranked  0 score     
Smile Re: Terra Preta

For people in Queensland here is a source.(Too expensive for me to ship it down).

I have found it very hard to buy cheap charcoal in Australia.
Any help would be appreciated I am presently paying $7 for 3.5 K of crummy coco husk charcoal. I would like real wood (I think???)

Arthur STAFFORD
'CharCol'
Eskdale District
P.O. Box 166
Toogoolawah
QLD Australia 4313
Mobile: 0427607275
..............................................
Last night there was a TV programme extolling the virtues of underground CO2 sequestration. Very expensive Very unproven technology.
Most scientists seem to believe we need to reduce our global CO2 levels regardless of wether the CO2 increase is caused by Planety Mechanics or Human Activity
.................................................. ....
From memory, I think this link has some info on sequestration (A big document and no broadband!)
http://www.energy.gatech.edu/presentations/dday.pdf


----------------
"Unemployment is capitalism's way of getting you to plant a garden."
~Orson Scott Card

Last edited by Michaelangelica; 10-27-2006 at 12:02 AM..
Old 10-27-2006   #199 (permalink)
redgreenblue's Avatar
Thinking


 
redgreenblue will become famous soon enoughredgreenblue will become famous soon enough
 



Not Ranked  0 score     
Re: Terra Preta

Quote:
Originally Posted by Turtle
I do not think it is practicle to attempt to ameleorate global warming by sequestering carbon in soils ala terra preta.
Interesting comment... and I think the answer is that we really don't know yet. In an article on "Bio-char sequestration in terrestrial ecosystems – a review"
(www)css.cornell.edu/faculty/lehmann/publ/MitAdaptStratGlobChange%2011,%20403-427,%20Lehmann,%202006.pdf
Lehmann & others makes the case that bio-char production could be a significant tool to ameleorate global warming. While there's tons of articles (and 2 books) focusing mostly on the soil science of terra preta, there hasn't been that much research into what large-scale bio-char production would look like. Some of the current research underway is trying to gain a systems-level perspective of how this could fit into (or modify) existing agricultural/energy/etc systems.

Two other articles on "Bio-char and global carbon cycles" can be found here:
(www)css.cornell.edu/faculty/lehmann/biochar/Biochar_references.htm

There's a bit of uncertaintly on a global scale. For instance... charcoal has a very high energy content, and people in developing countries may be economically motivated to burn it for fuel instead of returning it to the soil. There's a lot of interesting questions, like how would we compare benefits/costs of charcoal as fuel vs. charcoal as soil amendment?

So it's really a question of how can we get this system to fit into larger existing techno-economic-social systems (also, how large could it become? what are the limits to spreading this technology). If you look through Eprida's presentations, you can see they're thinking about this in their slides on biorefineries. Biomass gasification is a bit of a swiss army knife for chemical production, and there may be opportunities for this technology to become economically sustainable by being a key process in numerous types of industries.

This systems level view is also important for projects such as Turtle's solar parabolic reflector. When the biomass is heated, it gives off syngas (CO, CO2, Methane). As some of you are probably aware, methane has 21x the global warming potential of CO2. So would this process be beneficial or harmful from a global warming perspective? Would some of the char absorb these gases and prevent their release into the atmosphere? I haven't run the numbers on the material balances, but my point is that before we can answer if bio-char is really the answer, we need to be aware of 2nd and 3rd order effects that may shape the success of the solutions we propose.

Cheers,

redgreenblue
Old 10-27-2006   #200 (permalink)
Michaelangelica's Avatar
Creating

Editor
Basic Subscription
Sponsor

Location:
North of Sydney Australia
 
Michaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond reputeMichaelangelica has a reputation beyond repute
 



Not Ranked  0 score     
Smile Re: Terra Preta

Quote:
Originally Posted by redgreenblue
I

This systems level view is also important for projects such as Turtle's solar parabolic reflector. When the biomass is heated, it gives off syngas (CO, CO2, Methane). As some of you are probably aware, methane has 21x the global warming potential of CO2. So would this process be beneficial or harmful from a global warming perspective?
Would some of the char absorb these gases and prevent their release into the atmosphere?
I haven't run the numbers on the material balances, but my point is that before we can answer if bio-char is really the answer, we need to be aware of 2nd and 3rd order effects that may shape the success of the solutions we propose.

Cheers,

redgreenblue
Very interesting, sane, and considered response Thank you
What is the answer?

Methane is mainly produced by landfill and swamps.
So. . .?


----------------
"Unemployment is capitalism's way of getting you to plant a garden."
~Orson Scott Card
Closed Thread

Bookmarks


LinkBacks (?)
LinkBack to this Thread: http://hypography.com/forums/terra-preta/3451-terra-preta-parent-thread-started-all.html
Posted By For Type Date
View topic - Does anyone remember that doco on.....? - Permaculture discussion forum This thread Refback 05-21-2007 01:30 PM
Carbon Dioxide | Terra Preta This thread Refback 05-21-2007 09:53 AM
Charcoal Use in Japan | Terra Preta This thread Refback 05-20-2007 05:06 PM
Les Forums d'Onpeutlefaire.com -> Terra Preta This thread Refback 05-20-2007 01:31 AM
PSI | Terra Preta This thread Refback 05-19-2007 12:37 PM
Terra Preta | Terra Preta This thread Refback 05-18-2007 07:55 AM
Time to Master the Carbon Cycle | Terra Preta This thread Refback 05-17-2007 06:46 AM
Companies producing agrichar technologies | Terra Preta This thread Refback 05-16-2007 09:00 PM
View topic - Does anyone remember that doco on.....? - Permaculture discussion forum This thread Refback 05-16-2007 10:11 AM
DesMoinesRegister.com Blogs » Blog Archive » ConocoPhillips’ Interest in Pyrolysis This thread Refback 05-14-2007 07:18 AM
About the Terra Preta Discussion List and Website at Bioenergylists.org | Terra Preta This thread Refback 05-13-2007 08:46 AM
Philip Small Blog: Making Charcoal with an Inverted Downdraft Gasifier | Terra Preta This thread Refback 05-12-2007 10:42 PM
Commentary: A Handful of Carbon | Terra Preta This thread Refback 05-12-2007 06:04 AM
Terra Preta Soils - sci.environment | Google Groups This thread Refback 05-11-2007 12:52 PM
Terra Preta Soils - sci.environment | Google Groups This thread Refback 05-11-2007 12:11 PM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 05-11-2007 12:35 AM
Charcoal from biowaste may remove carbon from atmosphere, on global scale | relocalize.net This thread Refback 05-09-2007 01:47 AM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 05-08-2007 05:23 PM
The CO2 sings 'Bury me, buuuu-reee me, bury me, across the world' | Gristmill: The environmental news blog | Grist This thread Refback 05-06-2007 12:24 PM
DesMoinesRegister.com Blogs » Blog Archive » More on Carbon Cycle (posted for Dr. Robert Brown) This thread Refback 05-05-2007 11:02 AM
Terra Preta Soils Technology This thread Refback 05-04-2007 08:49 AM
phpBB • View topic - who is linking to my forum mod? This thread Refback 05-03-2007 03:25 AM
PBS Discussions :: View topic - Charcoal as carbon sink This thread Refback 05-02-2007 09:56 PM
Betterhumans - Terra Preta Soils to Save the Biosphere This thread Refback 05-01-2007 10:19 AM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 04-30-2007 07:26 PM
Untitled document This thread Refback 04-30-2007 06:55 PM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 04-27-2007 07:17 AM
Kelpie Wilson on Branson's prize | Gristmill: The environmental news blog | Grist This thread Refback 04-27-2007 05:36 AM
Soil - Our Financial Institution » Celsias This thread Refback 04-25-2007 08:00 AM
Conversion of Municipal Solid Waste (MSW) into Charcoal & Producer Gas | Terra Preta This thread Refback 04-19-2007 10:38 PM
transect points This thread Refback 04-18-2007 02:34 PM
Science a GoGo's Discussion Forums: Terra Preta Soils to Save the Biosphere This thread Refback 04-17-2007 11:04 PM
Bio-char references This thread Refback 04-15-2007 02:59 PM
TERRA: Living Soil This thread Refback 04-12-2007 09:10 PM
Betterhumans - Terra Preta Soils to Save the Biosphere This thread Refback 04-11-2007 10:28 PM
Betterhumans - Terra Preta Soils to Save the Biosphere This thread Refback 04-07-2007 01:20 PM
phpBB • View topic - who is linking to my forum mod? This thread Refback 04-04-2007 03:22 PM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 04-02-2007 11:52 AM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 03-26-2007 11:05 AM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 03-25-2007 05:51 PM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 03-25-2007 05:04 PM
A conversation with climate journalist Elizabeth Kolbert | By David Roberts | Grist | Main Dish | 10 Apr 2006 This thread Refback 03-24-2007 05:17 PM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 03-20-2007 06:40 AM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 03-19-2007 02:23 PM
Preta - Flickr: Photos from Arqstein This thread Refback 03-17-2007 05:21 PM
The Newfarm Forums :: View topic - Terra Preta Soil Technology This thread Refback 03-16-2007 10:48 AM
Science a GoGo's Discussion Forums: Terra Preta Soils to Save the Biosphere This thread Refback 03-14-2007 01:46 PM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 03-13-2007 08:22 PM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 03-13-2007 05:43 PM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 03-13-2007 10:56 AM
Elizabeth Kolbert profiles Amory Lovins | Gristmill: The environmental news blog | Grist This thread Refback 03-11-2007 07:56 AM
International Cannagraphic Magazine Forums - Colombian Soil Mix This thread Refback 03-08-2007 10:57 PM
Progressive Independent - Viewing topic This thread Refback 03-07-2007 06:05 AM
zomboconjon: An Outrage? This thread Refback 03-06-2007 02:53 PM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 03-06-2007 12:32 AM
Gasification May Be Key to U.S. Ethanol This thread Refback 03-05-2007 10:15 PM
phpBB.com :: View topic - who is linking to my forum mod? This thread Refback 03-05-2007 01:24 PM
Time to Master the Carbon Cycle with Tried & True Technology This thread Refback 03-04-2007 02:11 AM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 03-03-2007 03:50 PM
Kelpie Wilson on Branson's prize | Gristmill: The environmental news blog | Grist This thread Refback 03-01-2007 11:37 PM
phpBB.com :: View topic - who is linking to my forum mod? This thread Refback 03-01-2007 06:46 AM
transect points: Hypography Science Forum Upgrades Terra Preta Discussion This thread Refback 02-27-2007 07:15 PM
Gardening Care :: View topic - Gardeners can stop global warming with Terra preta. This thread Refback 02-26-2007 12:35 PM
Mechabolic Art Project: anyone want t... - Burning Man - tribe.net This thread Refback 02-25-2007 04:50 PM
Terra Preta Soils | Post Carbon Institute This thread Refback 02-25-2007 11:26 AM
PBS Discussions :: View topic - Charcoal as carbon sink This thread Refback 02-24-2007 07:56 AM
transect points: Pyrolysis This thread Refback 02-24-2007 02:44 AM
Science a GoGo's Discussion Forums: Terra Preta Soils to Save the Biosphere This thread Refback 02-22-2007 11:14 AM
transect points: Charcoal amended soil for real This thread Refback 02-22-2007 06:50 AM
Google Answers: the nature of soil This thread Refback 02-21-2007 04:07 AM
PBS Discussions :: View topic - Charcoal as carbon sink This thread Refback 02-20-2007 10:10 PM
Gardening Care :: View topic - Gardeners can stop global warming with Terra preta. This thread Refback 02-20-2007 12:38 AM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 02-19-2007 07:02 PM
International Cannagraphic Magazine Forums - Colombian Soil Mix This thread Refback 02-18-2007 01:28 PM
The Newfarm Forums :: View topic - Terra Preta Soil Technology This thread Refback 02-18-2007 07:48 AM
Ayahuasca Forums :: View topic - Terra Preta de Indio - the Amazonian Black Earth This thread Refback 02-15-2007 09:33 AM
transect points: Black Earth This thread Refback 02-15-2007 04:36 AM
Betterhumans - Terra Preta Soils to Save the Biosphere This thread Refback 02-14-2007 08:46 AM
Terra Preta This thread Refback 02-14-2007 07:12 AM
Progressive Independent - Viewing message This thread Refback 02-11-2007 03:52 PM
Wianor -The totally cool way to do mail! » Blog Archive » Terra Preta Soils Technology To Master the Carbon Cycle This thread Pingback 02-08-2007 11:24 AM
Progressive Independent - Viewing message This thread Refback 02-07-2007 07:24 AM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 02-06-2007 05:29 AM
Gardening Care :: View topic - Gardeners can stop global warming with Terra preta. This thread Refback 02-06-2007 03:44 AM
FuturePundit: Comment on Monocultures Not Best Choices For Biomass Energy This thread Refback 02-05-2007 05:49 PM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 02-04-2007 06:08 AM
PBS Discussions :: View topic - Terra Preta Soil Technology to Master the Carbon Cycle This thread Refback 02-02-2007 07:55 PM
Deutsch Knoppix FAQ - Knoppix Documentation Wiki This thread Refback 02-02-2007 04:09 PM
Terra Preta Soils to Save the Biosphere - Bad Astronomy and Universe Today Forum This thread Refback 01-31-2007 07:05 PM
Fossil Free Landscaping | Google Groups This thread Refback 01-31-2007 02:28 AM
View topic - charcoal agriculture - Biochar - Amazonian Dark Earth - Permaculture discussion forum This thread Refback 01-29-2007 07:30 PM
Hobbies or Interests You Indulge In - The Lair This thread Refback 01-29-2007 02:47 PM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 01-28-2007 05:59 PM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 01-28-2007 01:00 AM
Time to Master the Carbon Cycle with Tried & True Technology This thread Refback 01-27-2007 09:01 PM
transect points: Teaming with Microbes Arrived Today This thread Refback 01-27-2007 07:02 PM
Hobbies or Interests You Indulge In - The Lair This thread Refback 01-27-2007 02:57 PM
Les Forums d'Onpeutlefaire.com -> Terra Preta This thread Refback 01-26-2007 11:16 AM
The Oil Drum | Cellulosic Ethanol vs. Biomass Gasification Post #25 Refback 01-24-2007 05:37 PM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 01-23-2007 08:18 AM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 01-23-2007 12:50 AM
The Newfarm Forums :: View topic - Terra Preta Soil Technology This thread Refback 01-20-2007 09:27 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 01-18-2007 10:36 AM
Book review: Hell and High Water | Gristmill: The environmental news blog | Grist This thread Refback 01-16-2007 06:35 PM
Terra preta - encyclopedia article about Terra preta. This thread Refback 01-16-2007 06:51 AM
The Forum This thread Refback 01-11-2007 07:40 PM
NSCSS.org :: View topic - Soil concept named top green idea in 2006 This thread Refback 01-11-2007 01:52 PM
transect points This thread Refback 01-11-2007 10:35 AM
Transition Culture - Page2RSS This thread Refback 01-09-2007 12:01 PM
Terra Preta The Black Earth :: NNSeek This thread Refback 01-08-2007 02:13 PM
Betterhumans - Terra Preta Soils to Save the Biosphere This thread Refback 01-04-2007 06:00 AM
Peak Energy: Black Earth This thread Refback 01-03-2007 07:29 PM
Peak Energy This thread Refback 01-03-2007 12:03 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 01-03-2007 12:30 AM
Terra Preta Soil Technology | iMechanica This thread Refback 12-31-2006 08:47 PM
Science a GoGo Discussion Forums: Terra Preta Soils to Save the Biosphere This thread Refback 12-28-2006 11:16 AM
PhysOrgForum Science, Physics and Technology Discussion Forums -> Terra Preta Soils Technology This thread Refback 12-26-2006 10:36 AM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-24-2006 08:32 PM
The Newfarm Forums :: View topic - Terra Preta Soil Technology This thread Refback 12-23-2006 09:20 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-23-2006 07:02 AM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 12-20-2006 07:36 AM
Terra Preta Soil Technology - Science Forums This thread Refback 12-18-2006 10:38 PM
Terra preta Soils to Save the Biosphere - Forums powered by UBBThreads™ This thread Refback 12-18-2006 02:47 PM
FuturePundit: Monocultures Not Best Choices For Biomass Energy This thread Refback 12-17-2006 09:37 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-16-2006 03:48 PM
Permaculture discussion forum :: View topic - Any uses for wood ash? This thread Refback 12-15-2006 09:18 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-15-2006 12:09 PM
terra preta - Hot Topics Forum - GardenWeb This thread Refback 12-15-2006 03:40 AM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-15-2006 12:19 AM
Peak Oil News & Message Boards >> Forums >> Energy Technology >> Terra Preta Soils to Save the Biosphere This thread Refback 12-14-2006 11:46 PM
Name your favourite BioFuel Technology - Page 14 - SciForums.com This thread Refback 12-14-2006 10:21 PM
Name your favourite BioFuel Technology - Page 13 - SciForums.com This thread Refback 12-14-2006 07:00 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-13-2006 02:33 PM
terra preta - Hot Topics Forum - GardenWeb This thread Refback 12-13-2006 12:33 PM
Terra Preta Soils to Save the Biosphere - America's Debate This thread Refback 12-12-2006 06:26 PM
terra preta - Hot Topics Forum - GardenWeb This thread Refback 12-12-2006 08:16 AM
Terra preta Soils to Save the Biosphere - Forums powered by UBBThreads™ This thread Refback 12-10-2006 03:04 PM
terra preta - Hot Topics Forum - GardenWeb This thread Refback 12-09-2006 07:12 AM
EcoWorld - The Global Environmental Community - Nature and Technology in Harmony This thread Refback 12-09-2006 02:56 AM
Terra Preta Soils - The Naked Scientists Science Discussion Forum This thread Refback 12-07-2006 01:40 AM
Terra Preta Soils to Save the Biosphere :: The Environment Site Forum This thread Refback 12-05-2006 10:55 PM
Terra Preta Soils to Save the Biosphere : ArriveNet Editorials : Technology This thread Refback 12-05-2006 09:55 PM
Science a GoGo Forums: Terra Preta Soils to Save the Biosphere This thread Refback 12-05-2006 08:27 PM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-05-2006 03:29 AM
Permaculture discussion forum :: View topic - charcoal agriculture - Biochar - Amazonian Dark Earth This thread Refback 12-04-2006 09:27 PM
Science a GoGo Forums: Terra Preta Soils to Save the Biosphere This thread Refback 12-04-2006 04:52 PM
Bill Beaty's Science Hobbyist / General Science Forum :: Science Hobbyist - General Science Forum :: Terra Preta Soils to Save the Biosphere This thread Refback 12-04-2006 04:20 PM
Anthonares » Blog Archive » Terra Preta de Indio: An Amazonian Lesson in Sustainability This thread Refback 12-04-2006 02:13 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Terra preta Michaelangelica German forum 13 10-05-2008 11:11 PM
My First Post "Terra Preta" Taildragerdriver Introductions 6 04-24-2007 05:59 AM
Terra Preta gets it's own sub-forum! InfiniteNow Announcements 0 02-27-2007 10:14 AM
Parent and foreigner mcewen Introductions 2 11-17-2006 03:20 PM

» Advertisement
» Current Poll
Who's the sexiest man alive? Johnny Depp or Robert Pattinson?
Johnny Depp - 30.00%
3 Votes
Robert Pattinson - 0%
0 Votes
Someone else (please specify) - 40.00%
4 Votes
I'm too macho to think a guy is sexy - 30.00%
3 Votes
Total Votes: 10
You may not vote on this poll.


All times are GMT -8. The time now is 09:32 PM.

Hypography?

Hypography [n.]: A combination of "hyperlink" and "bibliography" - ie, a list of links to electronic documents. Comparable to discography and bibliography, but not cartography.

We have been online since May 2000, and aim to be the best place to find and share science-related content of all kinds.

Share the love!

Please add more science to your life. Use our RSS feeds on your blog, your portal, or your favorite feedreader!


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.3.2
Copyright © 2000-2009 Hypography
Part of the Hypography - Science for Everyone Network