Growth and nutrition of hybrid poplars over 3 years after fertilization at planting
Bibliographic record
Abstract
A hybrid poplar plantation on eastern Vancouver Island was fertilized at planting with two readily soluble and four controlled-release fertilizers (CRF). The CRFs varied in their duration of release and in their ratio of N to other elements. Fertilizers were applied at rates supplying 0, 13.5, or 27 g N/tree (N0, N13.5, and N27 treatments). The plantation contained one Populus trichocarpa Torr. & Gray × Populus deltoides Bartr. ex Marsh. (T × D) and one P. trichocarpa × Populus maximowiczii A. Henry (T × M) hybrid. The T × D hybrid was consistently larger than the T × M hybrid. After 1 year, stem volumes were 24 and 35% greater in the N13.5 and N27 treatments, respectively; after 3 years, volumes were 9 and 21% greater, respectively. Volumes of trees fertilized with readily soluble fertilizers did not differ from those fertilized with CRFs, but volumes may have differed between CRFs. Growth of poplar on this site appeared to be limited by multiple elemental deficiencies, particularly of N, P, and S.
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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 | 0.000 | 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 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".