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  3. The Dynamic Response Mechanism Of Crops To Manganese Uptake And Transfer Mediated By Different Intercropping Crop Attributes.
  1. Home
  3. The Dynamic Response Mechanism Of Crops To Manganese Uptake And Transfer Mediated By Different Intercropping Crop Attributes.

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The dynamic response mechanism of crops to manganese uptake and transfer mediated by different intercropping crop

Zhixian Li1,2, Qiuyao Shang3, Li Zou1,2

  • 1School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, China.

Journal of the Science of Food and Agriculture
|August 7, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Intercropping Sedum alfredii with maize effectively reduces manganese uptake in crops and improves land use. This strategy shows promise for cleaning manganese-contaminated farmland near industrial zones.

Keywords:
cropsdynamichyperaccumulator plantsintercroppingmanganese contaminated soil

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Area of Science:

  • Environmental Science
  • Agronomy
  • Phytoremediation

Background:

  • Manganese contamination in farmland soils near industrial areas is a significant concern.
  • Intercropping hyperaccumulator plants with crops offers a sustainable solution for food security.
  • Sedum alfredii is a hyperaccumulator plant with potential for phytoremediation.

Purpose of the Study:

  • To investigate the impact of intercropping Sedum alfredii with maize and soybean on crop growth.
  • To analyze the dynamics of manganese accumulation in intercropped systems.
  • To evaluate the effectiveness of intercropping for manganese remediation in contaminated soils.

Main Methods:

  • Field experiments were conducted to compare monoculture with intercropping systems.
  • Measurements included crop growth parameters, land equivalent ratio (LER), and bioaccumulation amount (BCA).
  • Manganese content in various plant organs and grains was analyzed.

    • Main Results:

    • Sedum alfredii-maize intercropping increased land use efficiency (LER 1.89) and bioaccumulation (BCA 71.13%), significantly reducing manganese in plant organs.
    • Sedum alfredii-soybean intercropping also increased LER (1.94) and BCA (66.11%) but did not significantly reduce soybean root, stem, or pod manganese.
    • Manganese accumulation in grains was mainly due to aboveground translocation; intercropping maize reduced manganese uptake rate and delayed accumulation.

    Conclusions:

    • Manganese accumulation dynamics differ based on crop type.
    • Intercropping Sedum alfredii with maize enhances land use and reduces crop manganese uptake, proving effective for manganese-contaminated farmland remediation.
    • This intercropping approach presents a viable strategy for sustainable agriculture in industrial-adjacent areas.