Nutrient Use Efficiency Under Stress
nounPronunciation: /ˈnjuːtriənt juːs ɪˈfɪʃənsi ʌndər stres/
The ratio of dry biomass produced per unit of nutrient absorbed when plants experience abiotic stress conditions like drought, salinity, or low temperatures. This metric indicates how effectively stressed plants allocate limited nutrients to growth.
Plain English
How efficiently plants convert the nutrients they absorb into new growth when facing environmental stress.
Etymology & History
Usage
"Crop varieties with higher nutrient use efficiency under stress produced acceptable yields despite reduced fertilizer availability."
Style guide notes: Specify stress type and nutrient element (N, P, K) when reporting; include measurement units (kg biomass/kg nutrient).
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Related Terms
Frequently Asked Questions
Why does nutrient use efficiency change under stress?
Stress reduces growth rates and redirects nutrients to stress-protection mechanisms rather than biomass accumulation.
How can farmers improve this efficiency?
Select stress-tolerant varieties, optimize fertilizer timing, and use soil moisture management to reduce stress severity.
Why Test Candidates on This?
Increasingly relevant in agricultural research, crop improvement programs, and sustainable nutrient management studies.
Required skill level: Senior