Salt removal from salt-damaged agricultural land using the scraping method combined with natural rainfall in the Tohoku district, Japan

Endô, Akira; Kang, Dong-Jin

doi:10.1016/j.geodrs.2014.11.001

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…The tsunami that followed the East Japan Earthquake on March 11, 2011 left 24,000 ha of salt-damaged farmland (Endo and Kang 2015). In the salt-damaged field, it is still impossible to cultivate crops including soybean (Fig.…”

Section: Salt Tolerance and Other Features In The Selected Strainsmentioning

confidence: 99%

Salt tolerance in wild relatives of adzuki bean, Vigna angularis (Willd.) Ohwi et Ohashi

Yoshida

Marubodee

Ogiso‐Tanaka

et al. 2015

Genet Resour Crop Evol

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Salt stress is becoming a serious problem in food production field. To find sources of salt tolerance, we screened 74 accessions of adzuki bean (Vigna angularis) and 145 accessions of cross-compatible wild relatives (seven species). We performed the primary screening in soil culture and the secondary screening in hydroponic culture, and identified JP205833 of V. riukiuensis (strain 'Tojinbaka') and JP107879 of V. nakashimae (strain 'Ukushima') as the valuable source of salt tolerance. We found these two strains had different salt tolerance mechanism, where 'Ukushima' prevented Na ? accumulation in leaves by filtering Na ? in roots and stems, while 'Tojinbaka' accumulated Na ? throughout the whole plant body. We also found 'Tojinbaka' and 'Ukushima' could retain photosynthesis even under salt stress. In addition, 'Ukushima' and especially 'Tojinbaka' showed even better growth in a salt-damaged field in Fukushima, Japan where soybean cultivar 'Tachinagaha' could not survive. Since both salt tolerant strains are cross-compatible with adzuki bean, our results will facilitate developing salt tolerant cultivar by introducing two different mechanisms of salt tolerance.

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Section: Salt Tolerance and Other Features In The Selected Strainsmentioning

confidence: 99%

Salt tolerance in wild relatives of adzuki bean, Vigna angularis (Willd.) Ohwi et Ohashi

Yoshida

Marubodee

Ogiso‐Tanaka

et al. 2015

Genet Resour Crop Evol

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“…Saline land can be physically reclaimed by salt scraping to remove the salt crust so that plants can be re-established [128,129]. This must be typically followed by leaching to remove salts including Na + from the root zone, and in moderate saline-sodic conditions, applying Ca 2+ amendments to displace exchangeable Na + [33,[135][136][137]. The dynamics of salt precipitation should be considered when salt scraping is considered as a method of saline soil remediation, as a high evaporation rate can move salts upward towards the soil surface and a high rainfall event can leach the salts to deeper depths of the soil profile where salts may not return to the surface soil [99].…”

Section: Salt Scrapingmentioning

confidence: 99%

Reclamation of Salt-Affected Land: A Review

Shaygan

Baumgartl

2022

Soil Systems

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Reclamation of salt-affected soil has been identified by the FAO as being critical to meet the needs to increase agricultural productivity. This paper reviews commonly used reclamation methods for salt-affected soils, and provides critical identifiers for an effective reclamation practice of salt-affected soil. There are widely used methods to reduce salinity and sodicity of salt-affected soils, including salt leaching, addition of amendments, revegetation using halophytes and salt scrapping. Not all reclamation techniques are suitable for salt-affected land. The reclamation strategy must be tailored to the site, and based on understanding the soil, plant and climate interactions. On some occasions, a combination of techniques may be required for reclamation. This can include salt scrapping to remove salts from the surface soil, the addition of physical amendments to improve soil pore systems and enhance salt leaching, followed by amelioration of soil by chemical amendments to preserve soil physical conditions, and then halophyte establishment to expand the desalinization zone. This study reveals that soil hydro-geochemical models are effective predictive tools to ascertain the best reclamation practice tailored to salt-affected land. However, models need to be calibrated and validated to the conditions of the land before being applied as a tool to combat soil salinity.

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