Integrated pest management of onion thrips (Thrips tabaci), an emerging pest of greenhouse floriculture crops in Ontario
Bibliographic record
Abstract
Integrated pest management (IPM) of thrips in greenhouses has focused primarily on western flower thrips (Frankliniella occidentalis, WFT). However, recent studies demonstrate that onion thrips (Thrips tabaci, OT) are prevalent in Niagara floriculture greenhouses. Biocontrol-based IPM programs effective for WFT appear less effective for OT, leading to outbreaks. Through studies in commercial greenhouses, laboratory assays, and greenhouse trials, this thesis examines the relative occurrence, monitoring, and management of OT in potted chrysanthemums. Data from 2019 identified outdoor populations as the likely infestation source of OT, with pressure peaking in July. Yellow monitoring cards were preferred over blue by OT but did not accurately reflect species composition in the crop at all sites. In laboratory assays, OT and WFT were equally susceptible to predatory mites, nematodes, and Beauveria bassiana. Greenhouse trials produced conflicting results suggesting that thrips behaviour on host plants may contribute to poor OT control. Management recommendations are discussed.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".