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Root growth and function in New Zealand pasture systems: a perspective on research needs, methods, and system
Fernando J Roca Fraga1, W P T Wijenayakage1, Astrid Volder2
1School of Agriculture and Environment, Massey University, Palmerston North, New Zealand.
Frontiers in Plant Science
|May 8, 2026
Summary
Understanding root phenology is crucial for pasture productivity and resilience. This study proposes treating root phenology as a dynamic trait to improve pasture models and management, especially in New Zealand dairy systems.
Area of Science:
- Pasture science
- Plant biology
- Agricultural systems modeling
Background:
- Root growth and phenology are vital for pasture productivity, resilience, and sustainability.
- Measuring and monitoring root systems in managed pastures, like New Zealand dairy systems, is challenging, leading to underrepresentation in studies and models.
- Current research lacks temporal resolution, species-specific data for mixed swards, and integration into breeding programs and farm models.
Purpose of the Study:
- To identify underdeveloped areas in root research, focusing on root phenology.
- To propose root phenology as a dynamic functional trait linking plant responses to environmental drivers and ecosystem outcomes.
- To advocate for integrating root dynamics into pasture research and modeling for improved system performance.
Main Methods:
- This perspective paper reviews current limitations in root research.
- It proposes a conceptual framework for integrating root phenology into pasture science.
- It highlights opportunities from advancements in sensing technologies and data analytics.
Main Results:
- Root processes are underrepresented in current pasture research and models.
- Existing studies are limited by insufficient temporal resolution and lack of species-specific data.
- A conceptual framework is proposed to treat root phenology as a dynamic functional trait.
Conclusions:
- Treating root phenology as a dynamic functional trait can bridge fundamental biology and applied pasture management.
- Integrating root dynamics into next-generation pasture models and decision-support tools is critical for improving system performance and environmental outcomes.
- New Zealand offers a unique platform for developing scalable, integrated root monitoring frameworks relevant to global temperate grazing systems.
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