focalinterest.com

AI Summary of Peer-Reviewed Research

This page presents an AI-generated summary of a published research paper. The original authors did not write or review this article. [See full disclosure ↓]

Publishing process signals: MODERATE — reflects the venue and review process. — venue and review process.

Nitrogen split ratio improved lodging resistance and yield in winter wheat

—

in
Close-up photograph of mature wheat stalks with visible awns in a field, showing golden-brown grain heads in sharp focus with a blurred agricultural landscape in the background.
Research area:AgronomyAgronomy and Crop SciencePlant Science

What the study found

The study found that, under a constant nitrogen rate, a 3:7 nitrogen basal-to-topdressing ratio improved the second basal internode's lodging resistance and increased winter wheat yield. The authors also report that lodging resistance was tied to changes in composition, structure, and yield through the culm lodging resistance index, which they describe as the key mediator.

Why the authors say this matters

The authors conclude that their findings provide agronomically applicable nitrogen management guidelines for high-yield winter wheat systems. The study suggests that adjusting nitrogen timing can help balance lodging resistance and yield in winter wheat.

What the researchers tested

The researchers ran field experiments over two seasons with three winter wheat cultivars in the North China Plain. They compared three nitrogen split ratios at a constant total nitrogen rate of 270 kg ha−1: 5:5 (CK), 3:7 (N1), and 7:3 (N2). They measured second basal internode mechanical properties, morphology, anatomy, and composition, and used structural equation modeling for analysis.

What worked and what didn't

Across all treatments, the culm lodging resistance index decreased by 41.8% from flowering to milk stage. At the milk stage, lodging treatments had CLRI values between 0.11 and 0.15. The N1 treatment significantly improved CLRI at all stages and increased yield by 12.2% compared with CK, while the abstract does not report similar benefits for the other nitrogen split ratio.

What to keep in mind

The summary does not describe limitations beyond the study's field setting, seasons, cultivars, and nitrogen rate. The results are reported for the North China Plain and for the nitrogen split ratios tested here, so the abstract does not show whether they apply beyond those conditions.

Key points

  • A 3:7 nitrogen basal-to-topdressing ratio improved lodging resistance in winter wheat.
  • The same 3:7 ratio increased yield by 12.2% compared with the 5:5 control.
  • The culm lodging resistance index fell by 41.8% from flowering to milk stage under all treatments.
  • At milk stage, lodging treatments had CLRI values between 0.11 and 0.15.
  • Structural equation modeling supported a composition–structure–lodging resistance–yield chain.

Disclosure

Research title:
Nitrogen split ratio improved lodging resistance and yield in winter wheat
Authors:
Chong Shang, Qianwen Li, Weiwei Duan, Jinkao Guo, Baoyuan Zhou, Jiayu Ma, Li Wang, Xuejing Liu, Wenchao Zhen
Institutions:
Chinese Academy of Agricultural Sciences, Hebei Agricultural University, Hebei Agricultural University, Hebei Agricultural University, Hebei Agricultural University, Hebei Agricultural University, Hebei University of Engineering, Institute of Crop Sciences, Ministry of Agriculture and Rural Affairs, Ministry of Agriculture and Rural Affairs, Ministry of Agriculture and Rural Affairs, Ministry of Agriculture and Rural Affairs, Ministry of Agriculture and Rural Affairs, North China University of Science and Technology, Shijiazhuang Academy of Agriculture and Forestry Sciences
Publication date:
2026-04-02
DOI:
10.3390/plants15071089
OpenAlex record:
View
AI provenance: This post was generated by gpt-5.4-mini (OpenAI). The original authors did not write or review this post.