Data · dataset · 2026
Comparative evaluation of tissue testing methods and fertilizer impacts on onion nutrition, yield, and Stemphylium leaf blight severity in the Holland Marsh, Ontario (2024–2025)
Listed in Borealis
This dataset contains the research data underlying Chapter 3 of Ifesinachi Nelson Ezeh MSc thesis: comparative evaluation of tissue testing methods and fertilizer impacts on onion nutrition, yield, and Stemphylium leaf blight severity in the Holland Marsh region of Ontario (2024–2025).
Description
It includes (1) paired onion leaf tissue nutrient measurements collected from commercial grower fields and analyzed using the Picketa Leaf Evaluated Nutrient System (LENS) and accredited laboratory testing (SGS), across multiple fields and sampling rounds; (2) paired onion leaf tissue nutrient measurements from a replicated fertilizer and foliar micronutrient program study conducted at Ontario Crops Research Centre; and (3) SLB Disease Severity Index (DSI) ratings across multiple assessment dates plus onion yield and bulb-size grade outcomes.
Nutrients reported include N, P, K, Ca, Mg, S, Zn, Mn, Cu, Fe, and B.
Links
Where it is published
- Dataverse dataset page borealisdata.ca/dataset.xhtml?persistentId=doi%3A10.5683%2FSP3%2FYJTMRB ↗
landing page · from borealisdata ca
- DOI doi.org/10.5683/sp3/yjtmrb ↗
DOI / persistent id · from borealisdata ca
Catalogue records · 1
- Dataverse API borealisdata.ca/api/datasets/:persistentId/?persistentId=doi%3A10.5683%2FSP3%2… ↗
metadata API · from borealisdata ca
Topics
- Stated by source
- Agricultural Sciences
- From keywords
- Life Sciences
- Inferred from text
- Crop and pasture production 75% · Disease 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Borealis | doi:10.5683/SP3/YJTMRB | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[disease].local:disease:disease | enrichment · borealisdata ca | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[field].anzsrc:group:3004 | enrichment · borealisdata ca | taxonomy-embedding@1.1.0 | title+keywords+description (75%) |
| concepts[field].dataverse_subject:agricultural-sciences | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:life-sciences | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| created_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| description | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /description |
| publication_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| title | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /name |
| updated_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| version_label | source · borealisdata ca | connector:borealisdata_ca@1.0.0 |