Trichoderma harzianum (Th-3) a Potential Strain to Manage the Purple Blotch of Onion (Allium cepa L.) Caused by Alternaria porri under North Indian Plains
Bibliographic record
Abstract
Purple blotch of onion by Alternaria porri (Ellis) Neerg. causes heavy yield loss in both bulb and seed crops. Using biocontrol agent to manage the disease is one of the most important approaches for successful disease management and sustainable onion production. For the development of bioagents based strategy seventeen isolates of fungal and six isolates of bacterial bioagents obtained from different sources were tested for their bioefficacy against A. porri. Effective isolates (Th-3, Th-30, Tv-12, Tv-15, Pf-3 and Bs-2) were selected and tested for volatile and non-volatile metabolites production and vigour induction under in vitro. Trichoderma harzianum isolate (Th-3) expressed high level of disease reduction and growth promotion in susceptible onion (cv. Pusa Red) when different methods viz., seed treatment, seedling dip and three foliar sprays were evaluated on onion bulb crop under glass house and field conditions. Field experiments (2008-2010) on onion seed crop also confirmed the potential of Th-3 isolate on disease suppression and growth promotion.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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".