Abstract
Shrimp farm activity can elevate in-situ soil salinity that in turn may affect any subsequent crop production if land usage changes. The utility of three different plants viz. soybean (Glycine max (L.) Merr.), narrow leaf cat-tail (Typha angustifolia L.) and sea holly (Acanthus ebracteatus Vahl) for phytoremediation of saline soil derived from former shrimp farm activity was investigated. The latter two species have been categorized as halophytes. In experiments of 16 days' duration and using sodium chloride concentrations (50-70 mg g(-1) dry weight) similar to those found in the benthic material of shrimp farms in Nakhon Pathom Province, central Thailand, the bioconcentration factors of sodium chloride (BCF; g soil dry weight g(-1) plant dry weight) in soybean (2240-4840) were found to be significantly higher than those found for narrow leaf cat-tail (16-20) and sea holly (15-17) at p < 0.05. The translocation of sodium chloride from root to shoot was noted in all plant species investigated, as well as wilting and defoliation due to the effects of sodium chloride. Approximately 90 %, 70 % and 60 % removal of sodium chloride in root zone soil was observed after growing soybean, narrow leaf cat-tail and sea holly, respectively. Soybean plants thus showed the greatest ability to decrease soil salinity, with measured root zone soil conductivity levels falling from 16.4-18 dS m(-1) (characteristic of strongly saline soils) to 1.5- 2.1 dS m(-1) (weakly saline). Although an important economic crop, soybean may also have potential in soil remediation.
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Claims 9
Claim · model-written summary
Soybean had higher sodium chloride bioconcentration than cat-tail and sea holly.
- Taxon
- soybean
Glycine maxe0 - Outcome
- bioconcentration factors of sodium chloridee0
- Direction
- highere0
- Value
- 2240-4840e0
- Qualifier
- sea holly (15-17)e0
- Comparator
- narrow leaf cat-taile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the bioconcentration factors of sodium chloride (BCF; g soil dry weight g(-1) plant dry weight) in soybean (2240-4840) were found to be significantly higher than those found for narrow leaf cat-tail (16-20) and sea holly (15-17) at p < 0.05.”
Claim · model-written summary
Sodium chloride translocated from roots to shoots in all three plants.
- Taxon
- soybeanGlycine maxt0
- Outcome
- translocation of sodium chloride from root to shoote0
- Qualifier
- all plant species investigatede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The translocation of sodium chloride from root to shoot was noted in all plant species investigated”
t0“soybean”
Claim · model-written summary
Sodium chloride caused wilting and defoliation in all investigated plants.
- Taxon
- soybeanGlycine maxt0
- Treatment
- sodium chloridee0
- Outcome
- wilting and defoliatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wilting and defoliation due to the effects of sodium chloride”
t0“soybean”
Claim · model-written summary
Soybean growth removed approximately 90% of root-zone soil sodium chloride.
- Taxon
- soybeanGlycine maxe0
- Treatment
- growing soybeane0
- Outcome
- removal of sodium chloride in root zone soile0
- Direction
- removale0
- Value
- 90 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Approximately 90 %, 70 % and 60 % removal of sodium chloride in root zone soil was observed after growing soybean, narrow leaf cat-tail and sea holly, respectively.”
Claim · model-written summary
Cat-tail growth removed approximately 70% of root-zone soil sodium chloride.
- Taxon
- narrow leaf cat-tail
.jpg?width=60)
Typha angustifoliae0 - Treatment
- growing soybean, narrow leaf cat-tail and sea hollye0
- Outcome
- removal of sodium chloride in root zone soile0
- Direction
- removale0
- Value
- 70 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Approximately 90 %, 70 % and 60 % removal of sodium chloride in root zone soil was observed after growing soybean, narrow leaf cat-tail and sea holly, respectively.”
Claim · model-written summary
Sea holly growth removed approximately 60% of root-zone soil sodium chloride.
- Taxon
- sea holly
.JPG?width=60)
Acanthus mollise0 - Treatment
- growing soybean, narrow leaf cat-tail and sea hollye0
- Outcome
- removal of sodium chloride in root zone soile0
- Direction
- removale0
- Value
- 60 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Approximately 90 %, 70 % and 60 % removal of sodium chloride in root zone soil was observed after growing soybean, narrow leaf cat-tail and sea holly, respectively.”
Claim · model-written summary
Soybean produced the greatest decline in soil salinity.
- Taxon
- SoybeanGlycine maxe0
- Outcome
- soil salinitye0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants thus showed the greatest ability to decrease soil salinity”
Claim · model-written summary
Soybean reduced root-zone conductivity from 16.4-18 to 1.5-2.1 dS m(-1).
- Taxon
- soybeanGlycine maxt0
- Outcome
- root zone soil conductivity levelse0
- Direction
- fallinge0
- Value
- 1.5- 2.1 dS m(-1)e0
- Comparator
- 16.4-18 dS m(-1)e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“measured root zone soil conductivity levels falling from 16.4-18 dS m(-1) (characteristic of strongly saline soils) to 1.5- 2.1 dS m(-1) (weakly saline)”
t0“soybean”
Claim · model-written summary
Authors suggest soybean may have soil remediation potential.
- Taxon
- soybeanGlycine maxe0
- Outcome
- soil remediatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean may also have potential in soil remediation”
The same questions in other papers
sodium chloride · disease · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.