Vetiver grass cleans up arsenic contaminated field for subsequent safe cultivation of rice with low arsenic in grains : A two year field study

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The presence of high concentrations of arsenic (As) in agricultural soils and its subsequent accumulation in rice crop is a serious issue threatening sustainability of agriculture and human health. In the present work, remediation of As contaminated field in Nadia, West Bengal, India was done through the cultivation of Vetiver (Vetiveria zizanoides L. Nash) and the same field was subsequently used for rice (Oryza sativa L.) cultivation. The results showed that V. zizanoides could reduce As concentrations in the field to bring it lower than the maximum permissible limit (20 mg kg-1) in 11 months' time. The rice plants grown in remediated field showed improvement in growth and photosynthesis parameters as compared to that of contaminated field. Importantly, yield related parameters (filled seed, 1000 grain weight, number of panicles etc.) were also significantly higher in remediated field than that in contaminated field. Arsenic concentration in roots, shoot, husk and grains of rice was found to be significantly lower in remediated field than in contaminated field. Grain As decreased from 0.75 to 0.77 μg g-1 dw in contaminated field to 0.15-0.18 μg g-1 dw. In conclusion, replacing rice for single year with V. zizanoides crop can significantly remediate the field and can be a viable option.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:923

Enthalten in:

The Science of the total environment - 923(2024) vom: 01. März, Seite 171491

Sprache:

Englisch

Beteiligte Personen:

Singh, Shraddha [VerfasserIn]
Gupta, Ankita [VerfasserIn]
Mishra, Himanshu [VerfasserIn]
Srivastava, Sudhakar [VerfasserIn]
Patra, Prasanta K [VerfasserIn]

Links:

Volltext

Themen:

Arsenic
Grain
Journal Article
N712M78A8G
Photosynthetic rate
Phytoremediation
Soil
Soil Pollutants
West Bengal

Anmerkungen:

Date Completed 27.03.2024

Date Revised 27.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.scitotenv.2024.171491

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369374843