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Record W7009246217

The effect of liquid hog manure and commercial fertilizer on nutrient movement in a sandy soil

2004· dissertation· en· W7009246217 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.

fundA Canadian funder is recorded on the work.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueMspace (University of Manitoba) · 2004
Typedissertation
Languageen
FieldAgricultural and Biological Sciences
TopicAgricultural Science and Fertilization
Canadian institutionsnot available
FundersManitoba Rural Adaptation Council
KeywordsLiquid manureFertilizerNutrientManureSoil nutrients
DOInot available

Abstract

fetched live from OpenAlex

A two-year field study was initiated n the spring of 2OO2 to investigate the effects of liquid hog manure and commercial fertilizer applications on the leaching losses of soil water and nutrient on a field ste situated over the Assiniboine Delta Aquifer (ADA) at Carberry, MB.The study used two methods for determining soil water and NO3-N leaching losses: traditional soil sampling and large intact sol core lysimeters.By the end of the two years, the highest rate of hog manure, cropped fertilizer and fertilizer fallow plots had 23g,2sg and 22T kg No3-N ha-1, respectively, within the root zone, which was significantly higher than the control, 2500 gal ac-1 and 5000 gal ac-1 plots (61 ,107 and 123 kg NO3-N ha-1, respectively).The highest rate of manure and the two commercial fertilizer treatments had greater cumulative amounts of NO3-N within the root zone than what Manitoba Agriculture guidelines considers excessive (i.e.168 kg NO3-N ha- 1.Soil sampling showed leaching losses of nitrate-nitrogen from all treatments, however little movement of Mehlch-3 phosphorus was observed after two years of this study.There was a distinct rate effect as nitrate-nitrogen concentrations of B, 1 1 , 15 and 23 mg NOa-N kg-1 were found in the control, 2SO0 gal ac-1, 5000 gal ac-1 and 7500 gal ac-1 treatments at the 20-30 cm depth after two years, respectvely.Nitrate-nitrogen concentration was increased by the application of commercial fertilizer (i.e. 12 mg kg-1) above both the control (i.e.2 mg kg-1) and manure (ie.6 mg kg-1 plots at a depth of 75cm after two years.However below

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: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.623
Threshold uncertainty score0.586

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 head0.008
GPT teacher head0.190
Teacher spread0.182 · 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