Intervention effectmodel-written summary

The 180 kg N ha-1 rate gave higher grain yield, harvest index and gross return.

A claim from Effect of nitrogen levels and plant growth regulators on growth, lodging, yield and economics of wheat (Triticum aestivum L.) · 2019

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: wheatTriticum aestivumt0
Treatment: 180 kg N ha-1e0
Outcome: grain yield, HI and gross returne0
Direction: highere0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

*Triticum aestivum* · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0
“higher grain yield, HI and gross return was obtained with marginally higher nitrogen rate i.e.180 kg N ha-1”
✓ located verbatim in the source · abstract, characters 965–1072

t0
“Effect of nitrogen levels and plant growth regulators on growth, lodging, yield and economics of wheat (Triticum aestivum L.)”
✓ located verbatim in the source · title, characters 0–125

Title

Effect of nitrogen levels and plant growth regulators on growth, lodging, yield and economics of wheat (Triticum aestivum L.)

S.P. Singh; Tejbal Singh; Anurag Kumar Singh; et al. Journal of Pharmacognosy and Phytochemistry 2019

Other claims from this paper (19)

Intervention effect Nitrogen rates significantly affected growth, lodging, yield and economics.
Intervention effect The 220 kg N ha-1 rate gave higher plant height, tiller number, leaf area index, dry matter and lodging.
Intervention effect The 180 kg N ha-1 rate gave higher straw yield, net return and B:C ratio.
Intervention effect PGR treatments reduced plant height and leaf area index.
Intervention effect PGR treatments increased tillering and dry matter accumulation.
Intervention effect PGR treatments significantly affected lodging score even at higher nitrogen rates.
Intervention effect PGR treatments affected final yield and economics.
Intervention effect Combined Chlormequat chloride and Tebuconazole sprays reduced plant height, LAI and dry matter relative to nitrogen alone.
Intervention effect Combined sprays reduced lodging score relative to nitrogen alone.
Intervention effect Combined sprays increased tiller number relative to nitrogen alone.
Intervention effect The combined spray response was statistically insignificant relative to two Chlormequat chloride sprays.
Intervention effect The 180 kg N ha-1 combined treatment gave higher grain yield of 48.37 q ha-1.
Intervention effect The 180 kg N ha-1 combined treatment gave higher harvest index of 40.52.
Intervention effect The 180 kg N ha-1 combined treatment gave higher gross return of 116376.25 ha-1.
Observation The 180 kg N ha-1 combined treatment gave a cost of cultivation of 34212 ha-1.
Intervention effect The 180 kg N ha-1 combined treatment gave higher net return of 82164.25 ha-1.
Intervention effect The 180 kg N ha-1 combined treatment gave higher B:C ratio of 2.40.
Intervention effect The 150 kg N ha-1 rate gave maximum straw yield of 73.45 q ha-1.
Intervention effect The 150 kg N ha-1 combined treatment gave the maximum B:C ratio of 2.42 and was considered most remunerative.

Record rev-e36963d68dede308e6f766a25454e39577026312effcf8e949545083c727c5d3 · schema claims-v0.9 · position 3 in the model’s answer

nitrogen · yield · Triticum aestivum (wheat)Positive and negative results

2,061 papers: 1,737 positive, 324 negative or no effect

1,736 papers in the same direction as this claim · 285 in the opposite direction · 39 reporting no difference from an alternative

positive
Maximum wheat grain yield (4.40 t/ha) was recorded with 100% N, statistically at par with 100 and 150% N plus growth regulators but significantly higher than the remaining treatments.
Nitrogen levels and growth regulators effect on wheat (Triticum aestivum) lodging, productivity and profitability under restricted irrigation in a Vertisols of Central India · 2025 · compared with rest of the treatments
Same directionCites this paper
negative
The lowest N rates reduced grain number per square metre at any given photothermal quotient.
The effects of radiation and nitrogen on number of grains in wheat · 1995
Opposite direction
negative
Severe drought with low nitrogen reduced grain yields.
Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods · 2016
Opposite direction
negative
Low nitrogen reduced grain yield to 4.3 t/ha.
The Effects of Prolonged Drought and Nitrogen Fertilizer on Root and Shoot Growth and Water Uptake by Winter Wheat · 1989 · compared with both N and water
Opposite direction
negative
Terminal spikelet production was delayed by about 2 d at these N treatments in Aroona.
Leaf Emergence, Tiller Growth, and Apical Development of Nitrogen‐Dificient Spring Wheat · 1993
Opposite direction
no effect
Nitrogen level, N timing and seeding rate had no significant effect on spring wheat grain yield across environments.
Seeding Rate and Nitrogen Management Effects on Spring Wheat Yield and Yield Components · 2007
Opposite direction
no effect
ear weight changed with two nitrogen treatments.
Effect of source‐sink relations and nitrogen nutrition on senescence and N remobilization in the flag leaf of wheat · 1991
Opposite direction
negative
In some environments, higher nitrogen rates lowered wheat yield.
Graphic Analysis of Genotype, Environment, Nitrogen Fertilizer, and Their Interactions on Spring Wheat Yield · 2004
Opposite direction

2,052 papers more in this group

See all 2,061 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 · Triticum aestivum (wheat)Positive and negative results