Plants· 2026Q1
Effects of N Reduction and Combined with Organic Fertilizer Application on Rice Yield and NH3 Volatilization from Saline Soil
- 0citations
- Q1SCImago
- 2026year
Short summary
Reducing urea-N input by 20% (RU) increased rice grain yield by 29.9–52.1% vs. full urea (U) in saline soil, while adding organic compost (RU+OF) further cut ammonia (NH3) volatilization by 8.9–25.3% compared to other treatments, despite a 14.6% yield reduction vs. RU.
AI-generated from the title and abstract; the full text is not read.
Key points
- Reducing urea-N input by 20% increased rice grain yield by 29.9–52.1% compared to full urea application.
- Adding organic compost to reduced urea-N (RU+OF) significantly lowered ammonia volatilization by 8.9–25.3% compared to other treatments.
- The RU+OF treatment resulted in 14.6% less rice grain yield compared to the reduced urea (RU) treatment alone.
- Combined reduced N and organic compost application enhanced apparent N recovery efficiency.
AI-generated from the title and abstract; the full text is not read.
Abstract
Organic fertilizer (OF) application can significantly enhance soil fertility and crop yield. However, its influence on nitrogen (N) loss via ammonia (NH3) volatilization from reclaimed coastal paddy soil is not well known. We conducted a pot experiment here using cyanobacteria compost of sawdust and chicken manure plus cyanobacterial sludge, with four treatments, i.e., no urea-N (CK), urea-N (U), 80% urea-N (RU), and 80% urea-N plus compost (RU+OF), to examine these effects. The results showed that reducing urea-N input increased rice grain yield by 29.9–52.1% compared to U treatment. However, RU+OF produced significantly lower rice grain than RU by 14.6%. More straw biomass and N uptake did not translate into higher rice grain yield under OF-amended treatment. Interestingly, compared to the other treatments, RU+OF significantly mitigated NH3 volatilization by 8.9–25.3%, achieving the lowest emissions and the greatest reduction. A 20% reduction in N application rate combined with compost enhanced crop apparent N recovery efficiency and lowered NH3 volatilization. Therefore, organic substitution through combined compost application has potential as a component of reduced-N fertilization strategies in reclaimed coastal paddy soil.
The authors' abstract, as published at the source. Plants, 2026 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Soil Science
Soil ScienceAgricultural and Biological Sciences