Effect of cultivar resistance and rotation crops on clubroot (Plasmodiophora brassicae) in canola and brassica vegetables
Bibliographic record
Abstract
Clubroot, caused by Plasmodiophora brassicae Woronin, can dramatically reduce yields of brassica crops. Once present in a field, eradication is difficult, but resistant cultivars can provide effective management. The reactions of selected canola and brassica vegetable cultivars to pathotypes 2 and 6, the prevalent pathotypes in Ontario, were assessed. The canola cultivars marketed as resistant were resistant to both pathotypes. The vegetable cultivars marketed as resistant were resistant to both pathotypes except for putative resistant cultivars of cabbage and broccoli which were resistant to pathotype 6 but susceptible to pathotype 2. The effect of selected field and cover crops on spore concentrations in soil and the combined effect of planting a cereal crop and liming and were also assessed. Wheat reduced spores compared to a no-plant control. Spore concentrations decreased as the lime rate increased and there was no interaction between wheat and lime. Therefore, growers can use both strategies.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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 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".