Summary
This review addresses the challenge of low nitrogen-use efficiency in aerobic rice systems, a water-saving alternative to flooded rice that is increasingly adopted due to resource scarcity. The authors examine how soil conditions modulate nitrogen dynamics through different pathways of the nitrogen cycle and synthesise agronomic management strategies to enhance NUE whilst reducing environmental losses (principally N₂O, NH₃, and NO₃⁻) and sustaining yield. The paper emphasises that optimising nitrogen input application is critical for balancing productivity gains against economic and environmental sustainability.
UK applicability
Direct applicability to UK agriculture is limited, as aerobic rice production is not commercially significant in temperate climates. However, the nitrogen management principles and soil-condition-dependent N-cycle pathways reviewed may inform broader arable cropping nitrogen stewardship in UK farming, particularly regarding mitigation of gaseous and leached nitrogen losses.
Key measures
Nitrogen-use efficiency (NUE); nitrogen losses via nitrous oxide (N₂O), ammonia (NH₃), and nitrate (NO₃⁻); nitrogen cycle pathways; yield sustainability
Outcomes reported
This review examined nitrogen cycle pathways in aerobic rice systems and evaluated agronomic management approaches to improve nitrogen-use efficiency (NUE) whilst minimising environmental losses. The paper synthesises evidence on how soil conditions alter nitrogen dynamics and identifies strategies to optimise nitrogen input application.
Topic tags
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