Akadama: Difference between revisions
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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 being somewhat harder and more useful in horticulture than the more 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. Akadama’s colour darkens when moist which can help the grower determine when to water a tree.<ref name="Lewis"> |
{{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 being somewhat harder and more useful in horticulture than the more 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. Akadama’s colour darkens when moist which can help the grower determine when to water a tree.<ref name="Lewis">{{cite journal | title = Mineral Components | journal = Colin Lewis Bonsai Art | first = Colin | last = Lewis | url = http://www.colinlewisbonsai.com/Reading/soils2.html | accessdate = 2013-06-02}}</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 which inhibit drainage, an essential 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="Lewis"/> |
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 which inhibit drainage, an essential 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="Lewis"/> |
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== Origin[edit source |
== Origin[edit source | edit source] == |
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Japan's horticultural cultivation medium is very rich in resources. Due to the frequent volcano activity, Japan enjoys rich resources of ancient volcano. After the volcano eruption , volcano rocks and pumice accumulation near the volcano. Using this unique resource, Japan developed rich horticultural products medium. Akadama soil and kanuma soil are two representations. |
Japan's horticultural cultivation medium is very rich in resources. Due to the frequent volcano activity, Japan enjoys rich resources of ancient volcano. After the volcano eruption , volcano rocks and pumice accumulation near the volcano. Using this unique resource, Japan developed rich horticultural products medium. Akadama soil and kanuma soil are two representations. |
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== Standard[edit source |
== Standard[edit source | edit source] == |
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Medium particle: 2-6.5mm Fine particle: 1-2mm |
Medium particle: 2-6.5mm Fine particle: 1-2mm |
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== Main components[edit source |
== Main components[edit source | edit source] == |
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SiO2 42.7% CaO 0.98% MgO 2.5% MnO 0.15% Fe2O3 8.4% Al2O3 25.1% |
SiO2 42.7% CaO 0.98% MgO 2.5% MnO 0.15% Fe2O3 8.4% Al2O3 25.1% |
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pH=6.9 EC=0.052ms/cm |
pH=6.9 EC=0.052ms/cm |
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== Functions[edit source |
== Functions[edit source | edit source] == |
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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 which inhibit drainage, an essential 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. |
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 which inhibit drainage, an essential 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. |
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== Usage[edit source |
== Usage[edit source | edit source] == |
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According to the different kinds of cultivated plants, Akadama can not only be used alone, but also be mixed with other collocation substrates, such as pumice, stone, peat etc. Medium particle is suitable for all kinds of potted plants, especially for cactus and Succulent plants |
According to the different kinds of cultivated plants, Akadama can not only be used alone, but also be mixed with other collocation substrates, such as pumice, stone, peat etc. Medium particle is suitable for all kinds of potted plants, especially for cactus and Succulent plants |
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Revision as of 09:40, 6 March 2017
 | 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 being somewhat harder and more useful in horticulture than the more 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. Akadama’s colour 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 which inhibit drainage, an essential 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.[1]
Origin[edit source | edit source]
Japan's horticultural cultivation medium is very rich in resources. Due to the frequent volcano activity, Japan enjoys rich resources of ancient volcano. After the volcano eruption , volcano rocks and pumice accumulation near the volcano. Using this unique resource, Japan developed rich horticultural products medium. Akadama soil and kanuma soil are two representations.
Standard[edit source | edit source]
Medium particle: 2-6.5mm Fine particle: 1-2mm
Main components[edit source | edit source]
SiO2 42.7% CaO 0.98% MgO 2.5% MnO 0.15% Fe2O3 8.4% Al2O3 25.1%
pH=6.9 EC=0.052ms/cm
Functions[edit source | edit source]
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 which inhibit drainage, an essential 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.
Usage[edit source | edit source]
According to the different kinds of cultivated plants, Akadama can not only be used alone, but also be mixed with other collocation substrates, such as pumice, stone, peat etc. Medium particle is suitable for all kinds of potted plants, especially for cactus and Succulent plants
References
- ^ a b c Lewis, Colin. "Mineral Components". Colin Lewis Bonsai Art. Retrieved 2013-06-02.