Paper · 2025 · Journal of soil science and plant nutrition

Mitigating Soil Sodicity in Irrigated Sugarcane Plantations with Canavalia Rosea: A Pot Experiment

Nonkululeko Sithole; Maria A Pérez-Fernández; Anathi Magadlela

9
claims
21
verbatim quotes
0
citations
3
research areas
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Open access · cc-by

Abstract

Abstract To promote the use of legumes for the alleviation of sodicity in small-scale irrigated sugarcane plantations to reduce the cost of soil amendments for small-scale sugarcane farmers. A greenhouse pot experiment was conducted by growing Canavalia rosea (Sw.) DC. in high sodium (Na + ) concentration/sodic sugarcane plantation soils over a period of seven months. Plant material and soil characteristics, including salinity indicators, were analysed pre– and post- C. rosea harvest. Canavalia rosea hyperaccumulated more sodium (Na + ) with age significantly decreasing soil Na + concentrations from 271.870 to 51.573 µmol Na g -1 post- C. rosea harvesting. The electrical conductivity (EC), sodium adsorption ratio (SAR), and exchangeable sodium percentage (ESP) were significantly reduced after three months and remained statistically similar over the period to the seventh month. Pseudomonas putida and various species in the Bacillus genus including B. amyloliquefaciens , B. safensis , B. pumulis , B. subtilis , and B. zhangzhouensis were isolated from C. rosea plants, revealing associations that likely assisted C. rosea in Na + tolerance and improved nutrient availability. The increased abundance of Flavobacterium species in rhizosphere soils was attributed to the ability of C. rosea to reduce soil Na⁺ concentrations, creating favourable conditions for microbial proliferation. Consecutive cultivation of C. rosea reduced Na + concentration by five-folds and improved soil characteristics in sugarcane plantation soils from Sikhwahlane, Mpumalanga. However, field studies are recommended to study the soil Na + / sodicity reduction, microbial interactions and growth of C. rosea at irrigated sugarcane plantations. Pot size and irrigation protocols in controlled experiments may lead to pot binding, potentially influencing the response of C. rosea in sodic soils. Graphical Abstract

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Claims 9

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Canavalia rosea hyperaccumulated more sodium with plant age.

Taxon
Canavalia RoseaCanavalia roseat0
Outcome
sodiume1
Direction
moree1
Qualifier
with agee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e1

“Canavalia rosea hyperaccumulated more sodium (Na + ) with age significantly decreasing soil Na + concentrations from 271.870 to 51.573 µmol Na g -1 post- C. rosea harvesting”

✓ located verbatim in the source · abstract, characters 490–663 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Growing Canavalia rosea in sodic sugarcane soil significantly decreased soil Na+ concentrations from 271.870 to 51.573 µmol Na g-1.

Taxon
Canavalia RoseaCanavalia roseat0
Treatment
growing Canavalia rosea (Sw.) DC.e0
Outcome
soil Na + concentrationse1
Direction
decreasinge1
Value
271.870 to 51.573 µmol Na g -1e1
Setting
greenhousee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e0

“A greenhouse pot experiment was conducted by growing Canavalia rosea (Sw.) DC. in high sodium (Na + ) concentration/sodic sugarcane plantation soils over a period of seven months”

✓ located verbatim in the source · abstract, characters 191–369 · show in text ↑
e1

“Canavalia rosea hyperaccumulated more sodium (Na + ) with age significantly decreasing soil Na + concentrations from 271.870 to 51.573 µmol Na g -1 post- C. rosea harvesting”

✓ located verbatim in the source · abstract, characters 490–663 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Growing Canavalia rosea significantly reduced soil EC, SAR and ESP after three months, and these stayed statistically similar to month seven.

Taxon
Canavalia RoseaCanavalia roseat0
Treatment
growing Canavalia rosea (Sw.) DC.e0
Outcome
electrical conductivity (EC), sodium adsorption ratio (SAR), and exchangeable sodium percentage (ESP)e2
Direction
reducede2
Qualifier
after three monthse2
Setting
greenhousee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e0

“A greenhouse pot experiment was conducted by growing Canavalia rosea (Sw.) DC. in high sodium (Na + ) concentration/sodic sugarcane plantation soils over a period of seven months”

✓ located verbatim in the source · abstract, characters 191–369 · show in text ↑
e2

“The electrical conductivity (EC), sodium adsorption ratio (SAR), and exchangeable sodium percentage (ESP) were significantly reduced after three months and remained statistically similar over the period to the seventh month”

✓ located verbatim in the source · abstract, characters 665–888 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pseudomonas putida and Bacillus species were isolated from Canavalia rosea plants.

Taxon
Canavalia RoseaCanavalia roseat0
Interactor
Pseudomonas putidaPseudomonas putidae3symbiont
Second interactor
Bacilluse3symbiont
Outcome
were isolatede4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗
Pseudomonas putida
Pseudomonas putida · InteractorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e3

“Pseudomonas putida and various species in the Bacillus genus”

✓ located verbatim in the source · abstract, characters 890–950 · show in text ↑
e4

“were isolated from C. rosea plants, revealing associations that likely assisted C. rosea in Na + tolerance and improved nutrient availability”

✓ located verbatim in the source · abstract, characters 1047–1188 · show in text ↑
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The isolated bacteria likely assisted Canavalia rosea in sodium tolerance and nutrient availability.

Taxon
Canavalia RoseaCanavalia roseat0
Outcome
Na + tolerance and improved nutrient availabilitye4
Qualifier
revealing associations that likely assistede4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e4

“were isolated from C. rosea plants, revealing associations that likely assisted C. rosea in Na + tolerance and improved nutrient availability”

✓ located verbatim in the source · abstract, characters 1047–1188 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Flavobacterium species increased in abundance in the rhizosphere soils of Canavalia rosea.

Taxon
Canavalia RoseaCanavalia roseat0
Interactor
FlavobacteriumFlavobacteriume7other
Outcome
increased abundance of Flavobacterium speciese7
Direction
increasede7
Setting
rhizosphere soilse7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e7

“The increased abundance of Flavobacterium species in rhizosphere soils was attributed to the ability of C. rosea to reduce soil Na⁺ concentrations, creating favourable conditions for microbial proliferation”

✓ located verbatim in the source · abstract, characters 1190–1396 · show in text ↑
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The increase in Flavobacterium abundance is attributed to Canavalia rosea reducing soil Na⁺ concentrations.

Taxon
Canavalia RoseaCanavalia roseat0
Outcome
increased abundance of Flavobacterium speciese7
Qualifier
ability of C. rosea to reduce soil Na⁺ concentrationse7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e7

“The increased abundance of Flavobacterium species in rhizosphere soils was attributed to the ability of C. rosea to reduce soil Na⁺ concentrations, creating favourable conditions for microbial proliferation”

✓ located verbatim in the source · abstract, characters 1190–1396 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Consecutive cultivation of Canavalia rosea reduced sodium concentration by five-folds and improved soil characteristics in sugarcane soils from Sikhwahlane, Mpumalanga.

Taxon
Canavalia RoseaCanavalia roseat0
Treatment
Consecutive cultivation of C. roseae5
Outcome
Na + concentratione5
Direction
reducede5
Value
by five-foldse5
Setting
Sikhwahlane, Mpumalangae5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e5

“Consecutive cultivation of C. rosea reduced Na + concentration by five-folds and improved soil characteristics in sugarcane plantation soils from Sikhwahlane, Mpumalanga”

✓ located verbatim in the source · abstract, characters 1398–1567 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Field studies of Canavalia rosea in irrigated sugarcane plantations are recommended.

Taxon
Canavalia RoseaCanavalia roseat0
Outcome
field studiese6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Canavalia rosea
Canavalia rosea · TaxonIanaré Sévi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Canavalia Rosea”

✓ located verbatim in the source · title, characters 65–80 · show in text ↑
e6

“However, field studies are recommended to study the soil Na + / sodicity reduction, microbial interactions and growth of C. rosea at irrigated sugarcane plantations”

✓ located verbatim in the source · abstract, characters 1569–1733 · show in text ↑