Evidence map›Paper›PMID 39930382›Full record

ArticleBMC plant biology2025

Deep nitrogen fertilizer placement improves the yield of summer maize (Zea mays L.) by enhancing its photosynthetic performance after silking.

Yi Cheng, Xiao-Ying Chen, Hao Ren, Ji-Wang Zhang, Bin Zhao, Bai-Zhao Ren, Peng Liu

Abstract read
In one paragraph

Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Effects of Exogenous Gibberellic Acid (GAPlants (Basel, Switzerland) · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Yi Cheng *College of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Xiao-Ying Chen *College of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Hao RenCollege of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Ji-Wang ZhangCollege of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Bin ZhaoCollege of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Bai-Zhao RenCollege of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China.
Peng LiuCollege of Agronomy, State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, Shandong, 271018, PR China. liupengsdau@126.com.

Funding

National Natural Science Foundation of China 31771713Shandong Province Key Agricultural Project for Application Technology Innovation SDAIT02-08Shandong Province Key research and project LJNY202103
6 · The paper itself

Abstract

backgroundEffective nitrogen (N) fertilizer management can improve photosynthetic performance of maize and enhance the grain yield. However, the effects of the deep placement of N on post-silking photosynthetic performance in maize and its relationship with grain filling are limited. The study was a split-plot design with N application rates as the main plots and N placement depths as sub-plots. The N application rates consisted of 225, 191.25, and 157.5 kg ha

resultsIncreasing the N placement depth counteracted the adverse effects of reduced N availability on the leaf area index, leaf area duration, and photosynthetic performance of plants. Compared to 225 kg N ha

conclusionsOverall, reducing the recommended N application rate of 225 kg ha

Indexed as

FertilizersNitrogenPhotosynthesisZea maysAntioxidantsChlorophyllPlant LeavesAntioxidantsChlorophyllFertilizersNitrogenDeep Nitrogen fertilizer applicationGrain fillingMaizeNitrogen ratePhotosynthetic characteristics

Identifiers

PMID39930382
PMCPMC11808948

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.