A modified Ontario P index as a tool for on-farm phosphorus management
Bibliographic record
Abstract
Reid, D. K. 2011. A modified Ontario P index as a tool for on-farm phosphorus management. Can. J. Soil Sci. 91: 455-466. The phosphorus index (P index) concept has gained wide acceptance as a tool to aid users in reducing P losses to surface water, but there is a wide range of potential users with differing goals on what the P index could or should do. To effectively change the behaviour of farmers who are applying fertilizer or manure to their fields requires a change in focus of the P index. This paper proposes a modified P Index that assesses the inherent risk of P loss to surface water from a given area separately from the risk of P loss from applied materials, to make it easier for farmers to use the output from the P index for management decisions. It also incorporates changes in index calculations to incorporate the risk of P losses through tile drains as well as overland flow, to reflect the differences in transport of dissolved versus particulate P, and to match the weightings of the P index factors to the relative risk of P loss from the landscape under Ontario conditions.
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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 | 0.000 |
| 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) | 0.001 | 0.001 |
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".