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| − | The amount of '''Food''' for [[human]] beings that can be brought from [[Earth]] to [[Mars]] is limited, and the logistics of a continued food transport for the long term is [[Financial effort estimation|expensive]]. Especially an [[Foundation of an Autonomous Colony|automomous colony]] needs it's own food production. Reasons for this are cost reduction and the achievement of [[independence from Earth]]. Last but not least, the own food is of higher quality.
| + | Marspedia strives for accuracy, but makes no claims about the accuracy of statements on this website. |
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| − | ==Food that can be brought from Earth==
| + | Marspedia strives for scientific consensus, but does not necessarily support, approve, or agree with any point of view expressed by any of the various authors of articles on this website. |
| − | *Several varieties of dehydrated food.
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| − | *Natural food that containes large amounts of fat and [[carbohydrate]]s, such as nuts.
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| − | *Concentrated fruit juice.
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| − | *Light weight, high energy foods with a long shelf-life.
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| − | ==Local Production Methods==
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| − | *Vegetable can be grown in [[greenhouse]]s.
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| − | *Proteins, fat and carbohydrates can be produced by a [[biotechnology|biotechnological factory]]
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| − | *[[Animals]], such as chicken, may be raised in sections of greenhouses.
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| − | :*It must be taken into account that the production of 1 kg meat requires 7 to 16 kg of vegetable matter.<ref>[http://www.situations.org.uk/_uploaded_pdfs/KateThompsonwhatyoucandoresource.pdf Kate Thompson: What you can do resource - facts and figures about resource consumption for food production.]</ref>
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| − | :*In addition, it takes 2000 to 3000 litres of [[water]] to produce 1 kg of meat, it only takes 100 litres of water to grow 1 kg of grain. Water will be a very valuable commodity on Mars, so the first generation of settlers may well be vegetarian by necessity.
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| − | :*Growing insects and their larvea (e.g. flour worms) can provide valuable proteins and might consume not too much vegetable mass (compared with cattle).
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| − | ==Nutrition and Energy Calculations==
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| − | Assuming we have no genetically modified plants for the Martian colony we can only try to provide optimized conditions in the greenhouse for maximization of harvest. The following calculation is, therefore, based upon terrestrial agricultural figures.
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| − | ===Potatoes===
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| − | Under best conditions on Earth it is possible to grow 3 kg potatoes per m<sup>2</sup> per year. 3 kg potatoes contain 8820 kJ energy, which roughly serves the energy requirements for one person for one day. So, a person needs about 365 m<sup>2</sup> cropland at a minimum to survive.
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| − | ===Wheat===
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| − | The average harvest of wheat is 0.28 kg per m<sup>2</sup> per year. Under best conditions it is possible to grow 0.7 kg per m<sup>2</sup> per year. 0.7 kg wheat contain 9198 kJ energy, which roughly serves the energy requirements for one person for one day. So, a person needs about 365 m<sup>2</sup> cropland at a minimum to survive.
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| − | ==Facts and figures==
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| − | *Sweden: 26260 kg potatoes per hectare <ref>[http://www.scb.se/templates/pressinfo____220855.asp Press release from Statistics Sweden and Swedish Board of Agriculture]</ref>
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| − | *Sweden: about 6000 kg wheats per hectare <ref>[http://www.ienica.net/reports/swedenupdate.pdf Report from State of Sweden]</ref>
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| − | *"Plain boiled potatoes are naturally low in fat and provide 72 kcal/100g (306 KJ/100g)" <ref>[http://www.nutrition.org.uk/home.asp?siteId=43§ionId=428&parentSection=322&which=undefined British Nutrition Foundation - Potatoes]</ref>
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| − | *"Wheat flour provides 310 - 340 kcal/100g (1320 - 1450 KJ/100g)"<ref>[http://www.nutrition.org.uk/home.asp?siteId=43§ionId=422&parentSection=322&which=undefined British Nutrition Foundation - Flour]</ref>
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| − | ==Open issues==
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| − | *What sorts of food are required to keep the settlers healthy? We need a nutrition plan on a scientific base.
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| − | *How much vegetable is needed to produce 1 kg pork, chicken, rabbit, beef, flour worm, etc.?
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| − | *What esculent animal/insect/worm etc. needs the smallest amount of vegetable? The best mass ratio is sought-after. A list would be highly welcome.
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| − | ==References==
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| − | <references/>
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| − | [[Category: Human Considerations]]
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| − | [[Category: Greenhouse]]
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Marspedia strives for accuracy, but makes no claims about the accuracy of statements on this website.
Marspedia strives for scientific consensus, but does not necessarily support, approve, or agree with any point of view expressed by any of the various authors of articles on this website.
The content licenses used on Marspedia do not apply to other wikis in our Interwiki network.
