Nitrogen use efficiency (NUE)
nounPronunciation: /ˈnaɪtrədʒən juːs ɪˈfɪʃənsi/
The ratio of biomass or grain yield produced per unit of nitrogen available to the plant, reflecting how effectively plants acquire, translocate, and utilize absorbed nitrogen. NUE integrates nitrogen uptake efficiency and nitrogen utilization efficiency as complementary components.
Plain English
How efficiently plants convert available nitrogen into growth and yield.
Etymology & History
Usage
"Improving nitrogen use efficiency in cereal crops is critical for reducing fertilizer inputs while maintaining grain productivity."
Style guide notes: Always expand 'NUE' on first mention; use abbreviation thereafter in technical documents.
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Contrasted with
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Frequently Asked Questions
What factors influence nitrogen use efficiency?
Root architecture, nitrate uptake capacity, nitrogen remobilization, leaf senescence timing, and enzyme activity all impact NUE.
How is NUE calculated in field studies?
NUE is typically calculated as grain yield or biomass divided by total nitrogen availability from soil and applied fertilizer.
Why Test Candidates on This?
Critical for crop improvement breeding, fertilizer management, sustainable agriculture practices, and nutrient stress resilience evaluation.
Required skill level: Mid