Akadama: Difference between revisions
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{{for|the Japanese sweet wine|Akadama (wine)}} |
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{{more citations needed|date=January 2017}} |
{{more citations needed|date=January 2017}} |
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{{Italic title|reason=[[:Category:Japanese words and phrases]]}} |
{{Italic title|reason=[[:Category:Japanese words and phrases]]}} |
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[[File:Akadama dry.jpg|thumb|Dry ''akadama'']] |
[[File:Akadama dry.jpg|thumb|Dry ''akadama'']] |
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[[File:Akadama wet 2.jpg|thumb|Wet ''akadama'']] |
[[File:Akadama wet 2.jpg|thumb|Wet ''akadama'']] |
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{{Nihongo|'''''Akadama'''''|赤玉土|akadamatsuchi|red ball earth}} is a naturally occurring, granular [[clay]]-like mineral used as [[soil]] for [[bonsai tree]]s and other container-grown plants. It is surface-mined, immediately sifted and bagged, and supplied in various grades; the deeper-mined grade are somewhat harder and more useful in horticulture than the more softer, shallow-mined grades. ''Akadama'' may also act as one component of growing medium when combined with other elements such as sand, composted bark, peat, or crushed lava. The color darkens when moist which can help the grower determine when to water a tree. <ref name="Lewis">{{cite journal | |
{{Nihongo|'''''Akadama'''''|赤玉土|akadamatsuchi|red ball earth}} is a naturally occurring, granular [[clay]]-like mineral used as [[soil]] for [[bonsai tree]]s and other container-grown plants. It is surface-mined, immediately sifted and bagged, and supplied in various grades; the deeper-mined grade are somewhat harder and more useful in horticulture than the more softer, shallow-mined grades. ''Akadama'' may also act as one component of growing medium when combined with other elements such as sand, composted bark, peat, or crushed lava. The color darkens when moist which can help the grower determine when to water a tree. <ref name="Lewis">{{cite journal |last=Lewis |first=Colin |title=Mineral Components |url=https://www.colinlewisbonsai.com/Reading/soils2.html |journal=Colin Lewis Bonsai Art |accessdate=2013-06-02 |archive-date=2023-05-14 |archive-url=https://web.archive.org/web/20230514220241/https://www.colinlewisbonsai.com/Reading/soils2.html |url-status=bot: unknown }}</ref> |
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While ''akadama'' is more costly than alternative soil components, it is prized by many growers for its ability to retain water and nutrients while still providing porosity and free [[drainage]]. For all of its qualities, many bonsai growers consider the cost of akadama prohibitive or unnecessary. Still other growers claim that when subjected to cold and wet climates, the granules progressively break down into smaller particles that inhibit drainage, an unwanted characteristic of bonsai soil. This problem can be avoided either by incorporating sand or grit in the soil mix, or by using the deeper-mined, harder grades. <ref name="Bonsai Soil">{{cite journal | title = Bonsai Soil | last = Shi | first = Shin | url=https://www.youtube.com/watch?v=mVUYBT_zDtw | date = 2022- |
While ''akadama'' is more costly than alternative soil components, it is prized by many growers for its ability to retain water and nutrients while still providing porosity and free [[drainage]]. For all of its qualities, many bonsai growers consider the cost of akadama prohibitive or unnecessary. Still other growers claim that when subjected to cold and wet climates, the granules progressively break down into smaller particles that inhibit drainage, an unwanted characteristic of bonsai soil. This problem can be avoided either by incorporating sand or grit in the soil mix, or by using the deeper-mined, harder grades. <ref name="Bonsai Soil">{{cite journal | title = Bonsai Soil | journal = Bonsai ShinShi | last = Shi | first = Shin | url=https://www.youtube.com/watch?v=mVUYBT_zDtw | date = 2022-08-25}}</ref> |
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== Origin == |
== Origin == |
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== Size and components == |
== Size and components == |
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Sizes vary between companies |
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Medium particle size is 2-6.5 mm and fine particle size is 1-2 mm. |
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* Fine: 1-3 mm |
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* Small: 4-7 mm |
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* Medium: 7-14 mm |
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* Large: 15-25 mm |
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Components include [[silicon dioxide]] SiO<sub>2</sub> 42.7%, [[calcium oxide]] CaO 0.98%, [[magnesium oxide]] MgO 2.5%, [[manganese oxide]] MnO 0.15%, [[iron oxide]] Fe<sub>2</sub>O<sub>3</sub> 8.4%, and [[aluminium oxide]] Al<sub>2</sub>O<sub>3</sub> 25.1%. |
Components include [[silicon dioxide]] SiO<sub>2</sub> 42.7%, [[calcium oxide]] CaO 0.98%, [[magnesium oxide]] MgO 2.5%, [[manganese oxide]] MnO 0.15%, [[iron oxide]] Fe<sub>2</sub>O<sub>3</sub> 8.4%, and [[aluminium oxide]] Al<sub>2</sub>O<sub>3</sub> 25.1%. |
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Akadama has a [[pH]] of 6.9 and [[Conductivity (electrolytic)|conductivity]] of 0.052 [[Siemens (unit)|ms]]/[[Centimetre|cm]]. |
Akadama has a [[pH]] of 6.9 and [[Conductivity (electrolytic)|conductivity]] of 0.052 [[Siemens (unit)|ms]]/[[Centimetre|cm]]. |
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<ref>{{cite web |last1=Tachikawa |first1=Heiwa |title=Heiwa Brand |url=http://www.tachikawa-heiwa.com/export.html |access-date=24 November 2022}}</ref> |
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<ref>{{cite web |last1=Tachikawa |first1=Heiwa |title=Mine Introduction |url=http://www.tachikawa-heiwa.com/Introduction.html |website=Heiwa Introduction |access-date=24 November 2022}}</ref> |
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== Uses == |
== Uses == |
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Latest revision as of 01:19, 18 August 2024
 | This article needs additional citations for verification. (January 2017) |
Akadama (赤玉土, akadamatsuchi, red ball earth) is a naturally occurring, granular clay-like mineral used as soil for bonsai trees and other container-grown plants. It is surface-mined, immediately sifted and bagged, and supplied in various grades; the deeper-mined grade are somewhat harder and more useful in horticulture than the more softer, shallow-mined grades. Akadama may also act as one component of growing medium when combined with other elements such as sand, composted bark, peat, or crushed lava. The color darkens when moist which can help the grower determine when to water a tree. [1]
While akadama is more costly than alternative soil components, it is prized by many growers for its ability to retain water and nutrients while still providing porosity and free drainage. For all of its qualities, many bonsai growers consider the cost of akadama prohibitive or unnecessary. Still other growers claim that when subjected to cold and wet climates, the granules progressively break down into smaller particles that inhibit drainage, an unwanted characteristic of bonsai soil. This problem can be avoided either by incorporating sand or grit in the soil mix, or by using the deeper-mined, harder grades. [2]
Origin
[edit]Due to volcanic activity, Japan enjoys rich volcanic resources. After volcanic eruptions, volcanic rocks and pumice accumulate near the volcano. Several horticultural products based on these materials have been developed in Japan, two of which are the Akadama and kanuma soils.
Size and components
[edit]Sizes vary between companies
- Fine: 1-3 mm
- Small: 4-7 mm
- Medium: 7-14 mm
- Large: 15-25 mm
Components include silicon dioxide SiO2 42.7%, calcium oxide CaO 0.98%, magnesium oxide MgO 2.5%, manganese oxide MnO 0.15%, iron oxide Fe2O3 8.4%, and aluminium oxide Al2O3 25.1%.
Akadama has a pH of 6.9 and conductivity of 0.052 ms/cm. [3] [4]
Uses
[edit]Akadama is used in the cultivation of plants. It can be used alone or mixed in as an amendment to other soil substrates such as lava rock, pumice, stone, peat moss, bark, etc. It is supplied in various sizes including "Shohin" (less than 1/16 inch), "Small" (1/16 inch to 1/4 inch), and "Medium" (1/4 inch to 1/2 inch). All sizes are suitable for many sorts of potted plants, but in particular, shohin or small is the preferred choice for cactus and succulent plants.
References
[edit]- ^ Lewis, Colin. "Mineral Components". Colin Lewis Bonsai Art. Archived from the original on 2023-05-14. Retrieved 2013-06-02.
{{cite journal}}: CS1 maint: bot: original URL status unknown (link) - ^ Shi, Shin (2022-08-25). "Bonsai Soil". Bonsai ShinShi.
- ^ Tachikawa, Heiwa. "Heiwa Brand". Retrieved 24 November 2022.
- ^ Tachikawa, Heiwa. "Mine Introduction". Heiwa Introduction. Retrieved 24 November 2022.