Responses of rice (Oryza sativa L.) plant growth, grain yield and quality, and soil properties to the microplastic occurrence in paddy soil

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dc.contributor.authorChen S
dc.contributor.authorFeng Y
dc.contributor.authorHan L
dc.contributor.authorLi D
dc.contributor.authorFeng Y
dc.contributor.authorJeyakumar P
dc.contributor.authorSun H
dc.contributor.authorShi W
dc.contributor.authorWang H
dc.date.available18/05/2022
dc.date.issued18/05/2022
dc.description.abstractPurpose: Agricultural soil has been recognized as a major sink of microplastic, an emerging pollutant to environmental biodiversity and ecosystem. However, the impacts of microplastic on soil–plant systems (e.g., crop growth, grain yield and amino acid content, nitrogen uptake capacity, and soil properties) remain largely unknown. Methods: Four typical microplastics, i.e., polythene (PE, 200 μm), polyacrylonitrile (PAN, 200 μm), and polyethylene terephthalate (PET) in diameter of 200 μm and 10 μm (PET200 and PET10), were tested to assess the consequent aforementioned responses under rice (Oryza sativa L.) paddy soil in a mesocosm experiment. Results: Microplastics multiply influenced the soil pH, NH4+-N and NO3−-N contents, which effects were depended on the rice growth stage and plastic type. Overall, microplastics significantly decreased the soil urease activity by 5.0–12.2% (P < 0.05). When exposed to PAN and PET (in both diameter of 200 μm and 10 μm), there were significantly 22.2–30.8% more grain yield produced, compared to the control (P < 0.05), which was attributing to the higher nitrogen uptake capacity of rice grain. Meanwhile, microplastics exhibited nominal influences on rice plant height, tillering number, leaf SPAD, and NDVI. The amino acids were affected by microplastic, depending on the types of plastics and amino acids. Conclusion: This study provides evidence that microplastic can affect the development and final grain yield, amino acid content, nitrogen uptake capacity of rice, and some major soil properties, while these effects vary as a function of plastic type. Our findings highlight the positive impacts that could occur when the presence of microplastics in paddy soil.
dc.description.confidentialFALSE
dc.identifier.citationJournal of Soils and Sediments: protection, risk assessment and remediation, 2022
dc.identifier.doi10.1007/s11368-022-03232-w
dc.identifier.elements-id453379
dc.identifier.harvestedMassey_Dark
dc.identifier.issn1439-0108
dc.identifier.urihttps://hdl.handle.net/10179/17136
dc.publisherSpringer
dc.relation.isPartOfJournal of Soils and Sediments: protection, risk assessment and remediation
dc.relation.urihttps://link.springer.com/article/10.1007/s11368-022-03232-w
dc.subject.anzsrc04 Earth Sciences
dc.subject.anzsrc05 Environmental Sciences
dc.subject.anzsrc07 Agricultural and Veterinary Sciences
dc.titleResponses of rice (Oryza sativa L.) plant growth, grain yield and quality, and soil properties to the microplastic occurrence in paddy soil
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Agriculture & Environment
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