{"id":"W3201427793","doi":"10.1186/s40538-021-00249-0","title":"Effect of biochar addition on legacy phosphorus availability in long-term cultivated arid soil","year":2021,"lang":"en","type":"article","venue":"Chemical and Biological Technologies in Agriculture","topic":"Phosphorus and nutrient management","field":"Environmental Science","cited_by":29,"is_retracted":false,"has_abstract":true,"ca_institutions":"Agriculture and Agri-Food Canada; University of Saskatchewan","funders":"Institute of Population and Public Health; King Saud University","keywords":"Biochar; Chemistry; Phosphorus; Pyrolysis; Environmental chemistry; Nutrient; Manure; Raw material; Soil pH; Agronomy; Soil water; Environmental science; Biology; Organic chemistry; Soil science","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001768108,0.0001932877,0.00029944,0.00002236924,0.00002784283,0.00001428294,0.0002297983,0.0003921507,0.0001855275],"category_scores_gemma":[0.0003923342,0.0000995499,0.0000626412,0.0006050032,0.0004292775,0.0000601369,0.0005772571,0.0003496146,0.00002290474],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001159153,"about_ca_system_score_gemma":0.000001651398,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00001961389,"about_ca_topic_score_gemma":0.000008170255,"domain_scores_codex":[0.9987875,0.0000536445,0.0002486471,0.0005209651,0.0001306719,0.0002586024],"domain_scores_gemma":[0.9995887,0.0001184311,0.00006493107,0.0001898923,0.000007452783,0.00003064865],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.000198145,0.0004987307,0.3409634,0.00003738979,0.000006771369,0.00005501285,0.000009982072,0.00000521678,0.6124269,0.0001056405,0.0008729869,0.0448198],"study_design_scores_gemma":[0.0004532143,0.0003383141,0.1575816,0.00006907331,0.000003657,0.000003691248,0.00005834372,0.000004618074,0.8404204,0.0005056189,0.0004194585,0.0001419345],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.997994,0.0005802751,0.000001347626,0.0004023288,0.00003114241,0.0002555421,0.00001480287,0.0001114317,0.0006091515],"genre_scores_gemma":[0.9983798,0.001356982,0.00005074882,0.00003992327,0.000006363444,0.00005241019,0.00008386008,0.000002397566,0.00002751266],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2279935,"threshold_uncertainty_score":0.4059527,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.006819523158511832,"score_gpt":0.2117543719639184,"score_spread":0.2049348488054065,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}