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WCL (Wet Chemistry Lab) sample
pH of Martian Soils
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Juramike
post Jun 25 2008, 12:18 AM
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We'll soon know what kinds of crops we can grow on Mars! Bonus, the fruits will be already freeze-dried!

Handy list of preferred pH's of common garden plants.

-Mike


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Juramike
post Jun 28 2008, 05:02 PM
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Well....in one sense the press has picked up on a key finding, if you look at it from the eventually-there-will-be-colonists-on-Mars in a "Farmer in the Sky" point of view: the results of the basic soil of this one analysis help bring Mars down to Earth. I can imagine what kinds of crops might be grown there someday.

The Big Three, NPK (nitrogen, phosphorous, and potassium), can be adjusted by large amounts of fertilizer, and trace micronutrients can also be easily added (I use Greensand) to soil. Soil microorganisms and plants can be coaxed to live as long as there aren't any wierd yukkies (funkybad salts like arsenic) or other reservoirs of difficult reactive species.

Soil pH, while adjustable, can be a pain to deal with. Ask anyone from Texas trying to grow acid-loving rhododendrons in alkaline caliche. You can do it, but you will be adding soil amendments forever. It is a losing battle, as the background soil will continually be trying to buffer out the tiny acid patch you've installed to grow your rhodys.

So when the full results of the soil analysis are complete, (and assuming no funkybad stuff) it will be possible to picture what bags of soil amendments and other materials would be required to mix into martian soil to make it suitable for agriculture.

I have no idea why, but I find that concept both fascinating and comforting.

-Mike



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belleraphon1
post Jun 28 2008, 06:49 PM
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QUOTE (Juramike @ Jun 28 2008, 12:02 PM) *
I have no idea why, but I find that concept both fascinating and comforting.
-Mike


Mike... so do I.... "The Farmer in the Sky" has just gotten a tiny bit closer to reality .....
To me this is like being in a hard science fiction story... and so much more to come.

Craig
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Posts in this topic
- Juramike   WCL (Wet Chemistry Lab) sample   Jun 25 2008, 12:18 AM
- - CosmicRocker   That's really a difficult question to answer, ...   Jun 25 2008, 06:28 AM
- - djellison   'Don't know, it'll be interesting to f...   Jun 25 2008, 09:38 AM
- - Doc   Considering the fact that there is water ice and s...   Jun 25 2008, 10:08 AM
- - tuvas   My money is on fairly acidic.   Jun 25 2008, 01:49 PM
- - BrianL   Oh man, my camp is dead last! The curse of the...   Jun 25 2008, 03:32 PM
- - centsworth_II   The results indicate that, as a group.... we don...   Jun 25 2008, 03:40 PM
- - peter59   The robotic arm has just delivered the first sampl...   Jun 25 2008, 08:44 PM
- - Cargo Cult   The universe's first, interplanetary Pot Noodl...   Jun 25 2008, 09:02 PM
- - djellison   Poll = Fail The results from the first sample...   Jun 26 2008, 05:52 PM
|- - tedstryk   Someone spilled the baking soda....that explains a...   Jun 26 2008, 06:00 PM
|- - Juramike   QUOTE (tedstryk @ Jun 26 2008, 01:00 PM) ...   Jun 26 2008, 06:48 PM
|- - tedstryk   QUOTE (Juramike @ Jun 26 2008, 07:48 PM) ...   Jun 26 2008, 07:54 PM
|- - Juramike   QUOTE (tedstryk @ Jun 26 2008, 02:54 PM) ...   Jun 26 2008, 08:04 PM
|- - ugordan   QUOTE (Juramike @ Jun 26 2008, 10:04 PM) ...   Jun 26 2008, 08:05 PM
- - elakdawalla   News: WCL analysis indicates pH of "8 or 9....   Jun 26 2008, 05:52 PM
- - Bill Harris   Not surprising. The pH is a rather quirky paramet...   Jun 26 2008, 07:00 PM
- - TheChemist   High -OH does not have to be present in the origin...   Jun 26 2008, 07:44 PM
|- - dburt   QUOTE (TheChemist @ Jun 26 2008, 12:44 PM...   Jun 26 2008, 08:20 PM
- - djellison   Poll now closed, because that would be like...chea...   Jun 26 2008, 07:50 PM
|- - Airbag   QUOTE (djellison @ Jun 26 2008, 02:50 PM)...   Jun 26 2008, 08:50 PM
- - TheChemist   DOI: 10.1306/74D70E75-2B21-11D7-8648000102C1865D D...   Jun 26 2008, 09:18 PM
|- - fredk   QUOTE (TheChemist @ Jun 26 2008, 09:18 PM...   Jun 26 2008, 09:39 PM
- - Juramike   I was biased by the prospect of acidic windblown d...   Jun 26 2008, 09:29 PM
- - Cargo Cult   Apparently we're all going to be eating aspara...   Jun 26 2008, 10:31 PM
|- - bcory   QUOTE (Cargo Cult @ Jun 26 2008, 06:31 PM...   Jun 26 2008, 11:52 PM
|- - Juramike   QUOTE (Cargo Cult @ Jun 26 2008, 05:31 PM...   Jun 27 2008, 02:42 AM
- - djellison   "The 1 cubic meter (35 cubic feet) of soil wa...   Jun 26 2008, 10:36 PM
|- - Cargo Cult   QUOTE (djellison @ Jun 27 2008, 12:36 AM)...   Jun 26 2008, 10:55 PM
|- - JRehling   The free-style mixing of standard units and metric...   Jun 26 2008, 11:02 PM
|- - Stephen   QUOTE (ngunn @ Jun 27 2008, 12:11 AM) Non...   Jun 27 2008, 07:40 AM
- - ngunn   I agree. Non-metric has to go. It just acts as a f...   Jun 26 2008, 11:11 PM
|- - BrianL   QUOTE (ngunn @ Jun 26 2008, 06:11 PM) but...   Jun 26 2008, 11:47 PM
- - siravan   What does a pH of 8-9 do to the "missing carb...   Jun 27 2008, 12:44 AM
|- - dburt   QUOTE (siravan @ Jun 26 2008, 05:44 PM) W...   Jun 28 2008, 12:30 AM
- - ngunn   Note for admin - the top quote in post 34 there is...   Jun 27 2008, 08:08 AM
- - ngunn   Back on the pH, I have a question for the chemists...   Jun 27 2008, 11:07 AM
|- - Juramike   QUOTE (ngunn @ Jun 27 2008, 06:07 AM) Bac...   Jun 27 2008, 06:20 PM
- - TheChemist   Just to clarify things I wrote earlier in this thr...   Jun 27 2008, 01:39 PM
- - nprev   Hmm. What does this tell us (if anything at all) a...   Jun 27 2008, 06:40 PM
|- - Juramike   QUOTE (nprev @ Jun 27 2008, 01:40 PM) Hmm...   Jun 27 2008, 10:52 PM
|- - dburt   QUOTE (nprev @ Jun 27 2008, 11:40 AM) Hmm...   Jun 27 2008, 11:16 PM
- - Bill Harris   pH is a quirky parameter and we may be putting too...   Jun 28 2008, 12:47 PM
- - elakdawalla   It's not really the media's fault. The Ph...   Jun 28 2008, 02:44 PM
- - TheChemist   I really wish the panelists were a bit more conser...   Jun 28 2008, 03:15 PM
- - Bill Harris   <sigh>, in a manner of speaking, this ...   Jun 28 2008, 04:18 PM
- - Juramike   Well....in one sense the press has picked up on a ...   Jun 28 2008, 05:02 PM
|- - belleraphon1   QUOTE (Juramike @ Jun 28 2008, 12:02 PM) ...   Jun 28 2008, 06:49 PM
|- - Bill Harris   QUOTE (Juramike @ Jun 28 2008, 12:02 PM) ...   Jun 28 2008, 09:55 PM
|- - Juramike   QUOTE (Bill Harris @ Jun 28 2008, 05:55 P...   Jun 28 2008, 11:01 PM
- - nprev   Mike, you consistently amaze me with your ability ...   Jun 28 2008, 06:28 PM
- - Shaka   Daisy World, here we come!   Jun 28 2008, 11:23 PM
- - edstrick   On a world with a probable history of a magma ocea...   Jun 29 2008, 08:56 AM
- - Bill Harris   I don't know much about heavy-metal content of...   Jun 29 2008, 01:54 PM
|- - SickNick   Full inline quote removed - Admin. An Undifferent...   Jun 29 2008, 05:05 PM
- - dvandorn   That's sort of a matter of degree, isn't i...   Jun 29 2008, 05:44 PM
- - jmknapp   Just saw this article in the Telegraph: QUOTE Mar...   Jun 29 2008, 09:52 PM
- - Juramike   Major elements and trace elements (in order), requ...   Jun 29 2008, 10:10 PM
- - antipode   The bizarre flora of long isolated New Caledonia i...   Jun 29 2008, 11:11 PM
- - nprev   ...cool mnemonic, Mike! This whole spin-up is...   Jun 29 2008, 11:33 PM
|- - Ipparchus   Irrelevant and full in line quote of last post rem...   Jul 7 2008, 07:35 AM
|- - bergadder   " July 7, 2008 -- NASA's Phoenix Mars Lan...   Jul 8 2008, 01:12 AM
- - akuo   There is a dark image here, but by adjusting brigh...   Jul 7 2008, 01:13 PM
- - TheChemist   Some tidbits from the July 1st entry of Dr Tom Pik...   Jul 13 2008, 10:20 AM
|- - marsbug   I'd guess that the alkaline soil is one piece ...   Jul 13 2008, 01:28 PM
|- - gallen_53   QUOTE (TheChemist @ Jul 13 2008, 11:20 AM...   Jul 13 2008, 08:59 PM
- - Shaka   Unless you show that the latter "get your lau...   Jul 14 2008, 06:56 AM


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