The search for white tip of Californian thistle in New Zealand
Bibliographic record
Abstract
Phoma macrostoma is a cosmopolitan fungus pathogenic to a wide range of herbaceous and woody plant species but nonpathogenic to most grasses Recently a strain of P macrostoma pathogenic to Californian thistle (Cirsium arvense) and other broadleaf weeds was registered as a bioherbicide in Canada for use in turf grass and arable cropping systemsThis strain causes a condition known as white tip disease that is characterised by symptoms of yellow to white chlorosis commonly referred to as photobleaching Symptoms characteristic of white tip disease have been observed on Californian thistle in New Zealand but it is uncertain if the causal agent is P macrostoma The aim was to determine if strains of P macrostoma that cause white tip disease and are genetically similar to the Canadian bioherbicide strain are present in New Zealand The presence of such strains would facilitate the registration of this pathogen as a bioherbicide since most safety requirements will have been satisfied by overseas research People in the agricultural industry are encouraged to look for Californian thistle with white tip symptoms and send samples to AgResearch for identification
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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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) | 0.001 | 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".