Cabbage Seedpod Weevil ( <i>Ceutorhynchus obstrictus</i> ) Management in Canola ( <i>Brassica napus</i> ) across western Canada
Bibliographic record
Abstract
Abstract The cabbage seedpod weevil (CSW), Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae), is a significant pest of canola ( Brassica napus L.) and other brassicaceous crops in western Canada, causing considerable yield losses if not effectively managed. It is primarily a pest of the southern prairies in western Canada, where damage can vary from 5 to 30% yield loss depending on region and year. CSW is a univoltine insect that overwinters in the adult stage. Adults are attracted to flowering fields each spring, where they mate, and females lay eggs in developing canola pods. Early flowering fields are most susceptible to damage and should be given priority in initial monitoring and management. Although adults can cause limited damage, larvae feeding on seeds in developing pods cause most of the damage. Insecticides are most often used for management, with no currently active biological control programs, though different options are being explored, and various cultural control strategies may prove effective in western Canada. This case study will review the current monitoring and management strategies for CSW in western Canada and suggest future areas of research. Information © The Authors 2024
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".