Characterization of Anaerobic Digestates for their Nitrogen Fertility Value and Improved Nutrient Management
Bibliographic record
Abstract
The purpose of this research was to determine the nitrogen fertility benefits of anaerobic digestates (AD) applied to agricultural soils for crop production. \tThe kinetics of nitrogen release in soils amended with AD were measured in 6-week laboratory incubation studies. Nitrification occurred within the first 3-4 weeks. Mineralization was not statistically significant over time. Soil samples from field trials in the 2012 - 2013 cropping year showed nitrification and mineralization occurred in the six weeks after AD application. Most soil inorganic-N was taken up by the crop before harvest. Early growth of maize (Zea mays L.) in soil amended with AD was investigated in a greenhouse trial. Field trials in 2012 and 2013 measured grain yield response and stover production of maize in soils treated with AD, urea, or manure (2013 only). These experiments confirm that inorganic-N in digestate and urea is equally available, and that ADs are a comparable nitrogen source to liquid manure (FNEs of 34% and 31%, respectively).
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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".