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Influence of Nitrogen Sources or Plant Growth Regulator on Improving Spring Canola Yield in Northwestern Ontario

2023· article· en· 0 citations· W4390520401 on OpenAlex· 10.17265/2161-6264/2023.02.001

Why is this work in the frame?

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

About CanadaIts subject is Canada, wherever its authors sit.

No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.

The three-model screen

all 1,000 screened works →

All three models called this out of scope.

stratum: about_only · design weight: 3321.24 (the sample is stratified; any rate computed without the weight is wrong)
Claude Opus 4.8OUT
genre: empirical
about Canada: no
confidence: high

Agronomy trial on nitrogen sources and canola yield; abstract absent but the title is unambiguous.

GPT-5.6 (high)OUT
genre: empirical
about Canada: no
confidence: low

The title clearly concerns canola yield in agriculture, not research itself, but the abstract is missing.

Grok 4.5OUT
genre: empirical
about Canada: no
confidence: medium

Agronomy of canola yield under nitrogen or growth regulators; title is domain agriculture with no abstract.

Abstract

No abstract. This is not a gap in this database — OpenAlex has none either. 23.3% of the frame is in this state, and the screen finds HALF as much metaresearch here, so the absence is a measured bias rather than a missing field.

The record

Venue
Journal of Agricultural Science and Technology B
Topic
Nitrogen and Sulfur Effects on Brassica
Field
Biochemistry, Genetics and Molecular Biology
Canadian institutions
Funders
Keywords
CanolaSpring (device)Growth regulatorYield (engineering)RegulatorAgronomyNitrogenPlant growthEnvironmental scienceBiologyHorticultureEngineeringChemistryMaterials science
Has abstract in OpenAlex
no