Intervention effectmodel-written summary

Excess N had inhibitory effects and decreased grain yield.

A claim from Maize Canopy Apparent Photosynthesis and 13C-Photosynthate Reallocation in Response to Different Density and N Rate Combinations · 2019

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Taxon: MaizeZea mayst0
Treatment: excess Ne0
Outcome: GYe0
Direction: decreasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Zea mays* · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0
“Maize”
✓ located verbatim in the source · title, characters 0–5

e0
“excess N had inhibitory effects and decreased the GY”
✓ located verbatim in the source · abstract, characters 871–923

Title

Maize Canopy Apparent Photosynthesis and 13C-Photosynthate Reallocation in Response to Different Density and N Rate Combinations

Shanshan Wei; Xiangyu Wang; Guanghao Li; et al. Frontiers in Plant Science 2019. doi:10.3389/fpls.2019.01113

Other claims from this paper (12)

Intervention effect Maize grain yield was maximized at 9.75 pl m-2 with a 270-360 kg ha-1 N rate in Shandong, China.
Intervention effect Canopy apparent photosynthesis and LAI were significantly enhanced by increased planting density.
Intervention effect Canopy apparent photosynthesis and LAI were significantly enhanced by increased N rate.
Association Yield improvement was more associated with the increase in CAP.
Intervention effect Increased N supply weakened the decrease in KNP and TKW caused by enhanced density.
Mechanism Increased N supply decreased the retention of 13C-photosynthates in the stem.
Mechanism Increased N supply promoted 13C-photosynthate reallocation to reproductive organs.
Intervention effect Grain yield and biomass responded more intensively to planting density than to N rate.
Intervention effect CAP and LAI responded more intensively to planting density than to N rate.
Intervention effect The 13C-photosynthate reallocation ratio to different organs responded more intensively to planting density than to N rate.
Observation The degree of response differed between varieties.
Mechanism Greater CAP, higher use of reserves and more 13C-photosynthate distribution to ears are vital for further improving maize grain yield.

Record rev-ea3eaa1eb97cd2b1504841af11e44483dd0acd9978a50e6afacc596788fd1ac8 · schema claims-v0.9 · position 5 in the model’s answer

nitrogen · yield · Zea mays (maize)Positive and negative results

2,185 papers: 1,906 positive, 279 negative or no effect

279 papers in the same direction as this claim · 1,905 in the opposite direction

positive
Increasing N rate significantly increased dry matter accumulation, grain yield and LAI.
Increased plant density and reduced N rate lead to more grain yield and higher resource utilization in summer maize · 2016
Opposite directionCited by this paper
positive
Increasing N input and planting density enhanced dry matter accumulation of summer maize.
Optimizing planting density and nitrogen application to enhance profit and nitrogen use of summer maize in Huanghuaihai region of China · 2022
Opposite directionCites this paper
positive
Increasing nitrogen fertilization from 0 to 200 kg N ha−1 increased maize grain yield.
Effects of Zeolite Application and Inorganic Nitrogen Fertilization on Growth, Productivity, and Nitrogen and Water Use Efficiency of Maize (Zea mays L.) Cultivated Under Mediterranean Conditions · 2025 · compared with 0
Opposite directionCites this paper
positive
Nitrogen application significantly increased 100-grain weight.
Effect of irrigation and nitrogen on milk line development in maize seed · 2015 · compared with no nitrogen application treatment
Opposite directionCited by this paper
positive
Nitrogen input significantly increased grain yield.
Optimal Nitrogen Accumulation and Remobilization Can Synergistically Improve Maize Yield and Nitrogen-Use Efficiency Under Low-Nitrogen Conditions · 2025
Opposite directionCites this paper
no effect
75% ETc deficit irrigation with BCRF at 80% nitrogen rate did not significantly reduce summer maize grain yield.
Nitrogen reduction combined with ETc irrigation maintained summer maize yield and increased water and nitrogen use efficiency · 2023
Same directionCites this paper
positive
High nitrogen rates increased corn yield 1.6-fold over unfertilized controls in medium textured soils.
Corn Response to Nitrogen is Influenced by Soil Texture and Weather · 2012 · compared with unfertilized control
Opposite direction
positive
The variable yield goal zone strategy returned $18.21 to $29.57 per hectare more than uniform management.
Economic Feasibility of Variable‐Rate Nitrogen Application Utilizing Site‐Specific Management Zones · 2004 · compared with uniform N management
Opposite direction

2,176 papers more in this group

See all 2,185 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.

Other papers on the same question

nitrogen · yield · Zea mays (maize)Positive and negative results