Lodging increases severity and impact of mycosphaerella blight on field pea
Bibliographic record
Abstract
Mycosphaerella blight, caused by Mycosphaerella pinodes, is a serious disease of pea (Pisum sativum) world-wide. The objective of this study was to assess the impact of lodging (reduced lodging treatment vs. control) and foliar fungicide (three to four applications of chlorothalonil vs. control) on the severity of mycosphaerella blight, and on seed yield and 1000-seed weight of 10 pea genotypes (three adapted cultivars and seven genotypes with partial resistance). In the reduced lodging treatment, a wire mesh was secured 30 cm above the ground; the crop was allowed to grow up through the mesh and be supported by it. The study was conducted under irrigation at two locations in Saskatchewan for 2 yr. Blight severity on stems, foliage, and pods was rated three to four times per year. The reduced-lodging treatment and application of fungicide reduced blight severity and increased seed yield and 1000-seed weight. The effects of reduced lodging and fungicide application were additive. Overall, lodging was associated with the largest reductions in seed yield and seed weight, but the impact of fungicide application was slightly larger than that of lodging for the three commercial cultivars. We conclude that losses caused by mycosphaerella blight may be reduced by breeding for improved resistance to lodging, but that application of foliar fungicide and breeding for partial resistance also hold promise. Key words: Pisum sativum, Mycosphaerella pinodes, resistance, fungicide, yield loss, quality
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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".