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Corn Yield Simulation under Different Nitrogen Loading and Climate Change Scenarios

2015· article· en· W2064921624 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueJournal of Irrigation and Drainage Engineering · 2015
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicClimate change impacts on agriculture
Canadian institutionsMcGill University
Fundersnot available
KeywordsDSSATEnvironmental scienceClimate changeCropBaseline (sea)Biomass (ecology)Yield (engineering)Growing seasonAgronomyCrop simulation modelCrop yieldAgricultureEcologyBiology

Abstract

fetched live from OpenAlex

Climate change in recent years has been affecting agriculture and especially crop production worldwide. This study analyzes the effect of two different climate change scenarios on crop production of an experimental site in southern Québec, Canada. The DSSAT model, which was calibrated for years 2008 and 2009, was used to simulate corn growth with 30 years of synthetic data for climate scenarios baseline (1961–1990), A2 (2040–2069), and B1 (2040–2069). In comparison with the baseline scenario, the A2 and B1 scenarios projected a decrease in grain and biomass, an increase in crop ET and evaporation, and an early crop emergence and maturity dates. Reduction in grain yield of up to 40% for A2 and 24% for B1 scenarios was observed, which could be attributed to water-deficit conditions resulting from decreased rainfall and increase in temperature during the growing season. Because drought indices were found to be significantly correlated with grain yield and crop water stress, it could be used to define the variability of grain yield and water stress at the field scale. This study indicates that climate change might have a negative effect in terms of corn crop production under the given study area.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.842
Threshold uncertainty score0.169

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.068
GPT teacher head0.249
Teacher spread0.181 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it