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Related Experiment Video

Updated: Jul 6, 2025

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Can high-yielding maize system decrease greenhouse gas emissions largely while simultaneously enhancing economic and

Yupeng Zhu1, Ziren Qu1, Jian Zhao1

  • 1College of Agronomy and Biotechnology, China Agricultural University, 100193 Beijing, China.

The Science of the Total Environment
|January 6, 2024
PubMed
Summary

A novel high-yielding maize system (HYMS) using the "Rhizobiont" concept significantly increased grain yields by over 25% while reducing nitrogen fertilizer use by up to 40%. This sustainable approach also cut greenhouse gas emissions and boosted economic benefits.

Keywords:
Carbon footprintEconomical returnFood securityRhizobiont

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Area of Science:

  • Agricultural Science
  • Environmental Science
  • Agronomy

Background:

  • Achieving high grain yields sustainably is crucial for global food security and aligns with Sustainable Development Goals (SDGs).
  • Conventional farming practices often involve high environmental costs, including significant greenhouse gas emissions and excessive fertilizer use.
  • There is a need for innovative agricultural systems that balance productivity with environmental stewardship.

Purpose of the Study:

  • To establish a high-yielding maize system (HYMS) that integrates the
  • Rhizobiont
  • concept for optimized nutrient management.
  • To substantially reduce greenhouse gas emissions associated with maize cultivation.
  • To evaluate the economic and ecosystem economic benefits of the HYMS compared to current farmer practices (CP).

Main Methods:

  • A two-year field study was conducted with six different treatments.
  • The high-yielding maize system (HYMS) was designed to balance genetic, environmental, and management factors.
  • Nutrient management was optimized using the
  • Rhizobiont
  • concept, focusing on nitrogen (N) application rates.

Main Results:

  • HYMS significantly increased grain yield, averaging 12,706.6 kg ha⁻¹ in 2021 and 13,676.4 kg ha⁻¹ in 2022 (25.5-25.6% increase over CP).
  • Nitrogen application rates were reduced by 35.5-39.9% in HYMS compared to CP.
  • Cumulative greenhouse gas emissions (CO₂, N₂O, CH₄) decreased by 7.0-36.0%, and carbon intensity was reduced by 43.7% in HYMS.
  • Economic benefits (EB) and ecosystem economic benefits (EEB) were substantially higher in HYMS (90.9% and 117.9% increase, respectively).

Conclusions:

  • The high-yielding maize system (HYMS) effectively enhances grain productivity while minimizing environmental impact.
  • The
  • Rhizobiont
  • concept is a viable strategy for optimizing nutrient management and reducing greenhouse gas emissions in maize cultivation.
  • HYMS offers significant economic advantages and promotes sustainable agriculture, contributing to food security and farmer livelihoods.