Water Requirements and Growth of Irrigated Hybrid Poplar in a Semi-Arid Environment in Eastern Oregon
Bibliographic record
Abstract
Abstract Potential growth of poplar (Populus deltoidesP. nigra.) is highly dependent on the amount of applied irrigation and soil moisture. Hybrid poplar (cultivar OP-367) was planted at 222 trees/ac in April 1997 at the Oregon State University Malheur Experiment Station near Ontario, OR. Six irrigation treatments included a combination of soil water potentials as thresholds for initiating irrigation and varying water application rates. Water was applied via micro-sprinklers installed along the tree rows. Results indicated that for optimum poplar growth, soil water potential at an 8 in. depth should average above -20 kPa (kPa = cbar) during the growing season. This was achieved by irrigating when the soil water potential reached -25 kPa and applying 21 ac-in./ac of irrigation water during the first year, 35 ac-in./ac during the second year, and 44 ac-in./ac during the third year. By the end of the third year, trees receiving optimum irrigation averaged 26 ft tall and produced 256 ft3 of wood/ac. West. J. Appl. For. 17(1):46–53.
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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 | 0.000 | 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 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".