Growth Analysis of Faba Bean and Lupin with Volunteer Barley Competition in a Northern Environment
Bibliographic record
Abstract
Volunteer barley competition can significantly decrease the productivity of tannin‐free faba bean ( Vicia faba L.) and narrow‐leafed lupin ( Lupinus angustifolius L.). Field experiments were conducted in north central Alberta, Canada, between 2004 and 2006 to establish the effects of volunteer barley competition on these two crops. Faba bean and lupin were grown with three densities (0, 25, and 50 plants m −2 ) of volunteer barley ( Hordeum vulgare L.). Leaf area index (LAI), light interception, canopy height, and aboveground dry matter (DM) accumulation were measured at 21‐d intervals between 37 and 120 d after planting (DAP). At 79 DAP, 25 barley plants m −2 reduced faba bean LAI by 41% and lupin LAI by 64% compared with treatments without volunteer barley. Volunteer barley was shorter than the faba bean canopy but taller than the lupin canopy. As a result, volunteer barley did not affect the amount of light available at the top of the faba bean canopy. Due to the height advantage of volunteer barley over lupin, the amount of light available at the top of the lupin canopy was reduced to 51%, 100 DAP. A volunteer barley density of 25 plants m −2 reduced lupin DM by 68% and faba bean DM by 38%. The poor competitive ability of lupin may be attributed to slow early season LAI development, short stature, and poor light interception, which indicate the need for early and effective volunteer barley control in lupin crops.
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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) | 0.000 | 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".