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Optimizing Agronomic Management Practices for Enhanced Radiation Capture and Improved Radiation Use Efficiency in

Haicheng Xu1, Mei Liu1, Chuanxing Li2

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Optimized agronomic management practices significantly boost wheat (Triticum aestivum L.) yield by enhancing photosynthetically active radiation interception (IPAR) and radiation use efficiency (RUE). The improved high-yield agronomic management (IHY) strategy offers superior economic benefits and yield potential.

Keywords:
aboveground biomassagronomic practicegrain yieldradiation captureradiation use efficiencywinter wheat

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Area of Science:

  • Agricultural Science
  • Agronomy
  • Plant Physiology

Background:

  • Aboveground biomass accumulation in crops is primarily determined by intercepted photosynthetically active radiation (IPAR) and radiation use efficiency (RUE).
  • Optimized agronomic management practices are crucial for maximizing crop yield potential by influencing IPAR and RUE.

Purpose of the Study:

  • To evaluate the impact of different integrated agronomic management practices on wheat (Triticum aestivum L.) yield.
  • To determine how optimized management strategies influence IPAR and RUE in wheat canopies.

Main Methods:

  • Comparison of four management treatments: local traditional practice (LP), improved local traditional practice (ILP), high-yield agronomic management (HY), and improved high-yield agronomic management (IHY).
  • Assessment of crop growth, yield, IPAR, RUE, leaf area index, and economic profitability over two wheat growing seasons.

Main Results:

  • The IHY treatment resulted in grain yields 7-96% higher than ILP and LP, and comparable to HY.
  • Both HY and IHY treatments increased total IPAR by maintaining high leaf area index and IPAR fraction.
  • IHY demonstrated enhanced post-anthesis IPAR and RUE, contributing to higher aboveground biomass and net profit.

Conclusions:

  • Optimized agronomic management, particularly the IHY strategy, effectively enhances radiation capture and utilization in wheat.
  • The IHY approach is recommended for its high grain yield, improved RUE, and significant economic benefits in the target region.
  • Further research is needed to optimize pre-anthesis RUE within advanced management systems.