{"id":"https://openalex.org/W24524817","doi":null,"title":"Using nitrogen fertiliser to increase dairy farm profitability","display_name":"Using nitrogen fertiliser to increase dairy farm profitability","publication_year":1998,"publication_date":"1998-01-01","ids":{"openalex":"https://openalex.org/W24524817","mag":"24524817"},"language":"en","primary_location":{"id":"mag:24524817","doi":null,"is_oa":false,"landing_page_url":"http://www.nzsap.org/ym/ab98036.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306524284","display_name":"Proceedings of the New Zealand Society of Animal Production","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319718","host_organization_name":"New Zealand Society of Animal Production","host_organization_lineage":["https://openalex.org/P4310319718"],"host_organization_lineage_names":["New Zealand Society of Animal Production"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Proceedings of the New Zealand Society of Animal Production","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5035314928","display_name":"J.M. Mcgrath","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J.M. Mcgrath","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022420624","display_name":"J.W. Penno","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J.W. Penno","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101519453","display_name":"Kevin A. Macdonald","orcid":"https://orcid.org/0000-0001-9842-0107","observed_orcids":["https://orcid.org/0000-0001-9842-0107"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"K.A. Macdonald","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0001-9842-0107","affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5033353249","display_name":"W.A. Carter","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"W. A. Carter","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.6716,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.94630166,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":"58","issue":null,"first_page":"117","last_page":"120"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13591","display_name":"Pasture and Agricultural Systems","score":0.9916999936103821,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T13591","display_name":"Pasture and Agricultural Systems","score":0.9916999936103821,"subfield":{"id":"https://openalex.org/subfields/1102","display_name":"Agronomy and Crop Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12294","display_name":"Agricultural Science and Fertilization","score":0.002099999925121665,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10098","display_name":"Ruminant Nutrition and Digestive Physiology","score":0.0008999999845400453,"subfield":{"id":"https://openalex.org/subfields/1103","display_name":"Animal Science and Zoology"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/nitrogen-fertiliser","display_name":"nitrogen fertiliser","score":0.9760000109672546},{"id":"https://openalex.org/keywords/dairy-farm-profitability","display_name":"dairy farm profitability","score":0.972000002861023},{"id":"https://openalex.org/keywords/holstein-cattle","display_name":"Holstein cows","score":0.7599999904632568},{"id":"https://openalex.org/keywords/stocking-rate","display_name":"stocking rate","score":0.9829999804496765},{"id":"https://openalex.org/keywords/pasture-production","display_name":"pasture production","score":0.8700000047683716},{"id":"https://openalex.org/keywords/economic-surplus","display_name":"economic surplus","score":0.7760000228881836},{"id":"https://openalex.org/keywords/dairy-farm-economics","display_name":"dairy farming economics","score":0.335999995470047}],"concepts":[{"id":"https://openalex.org/C153279818","wikidata":"https://www.wikidata.org/wiki/Q7618087","display_name":"Stocking","level":2,"score":0.901100218296051},{"id":"https://openalex.org/C2778053677","wikidata":"https://www.wikidata.org/wiki/Q30121","display_name":"Pasture","level":2,"score":0.7966766357421875},{"id":"https://openalex.org/C2993932171","wikidata":"https://www.wikidata.org/wiki/Q2523135","display_name":"Stocking rate","level":3,"score":0.7016503810882568},{"id":"https://openalex.org/C140793950","wikidata":"https://www.wikidata.org/wiki/Q168091","display_name":"Animal science","level":1,"score":0.6289345622062683},{"id":"https://openalex.org/C129361004","wikidata":"https://www.wikidata.org/wiki/Q2470236","display_name":"Profitability index","level":2,"score":0.5446467399597168},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.4400979280471802},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.41486412286758423},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.3040582537651062},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.17770493030548096},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.10728475451469421},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:24524817","doi":null,"is_oa":false,"landing_page_url":"http://www.nzsap.org/ym/ab98036.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306524284","display_name":"Proceedings of the New Zealand Society of Animal Production","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310319718","host_organization_name":"New Zealand Society of Animal Production","host_organization_lineage":["https://openalex.org/P4310319718"],"host_organization_lineage_names":["New Zealand Society of Animal Production"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Proceedings of the New Zealand Society of Animal Production","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","score":1.0,"display_name":"Zero hunger"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1528361383","https://openalex.org/W1973119663","https://openalex.org/W2073695953","https://openalex.org/W2113659879","https://openalex.org/W2136821650","https://openalex.org/W2189036237","https://openalex.org/W2266947583","https://openalex.org/W2336150308","https://openalex.org/W2388298893","https://openalex.org/W3042203672"],"related_works":["https://openalex.org/W3042203672","https://openalex.org/W3041516985","https://openalex.org/W2266947583","https://openalex.org/W3041460181","https://openalex.org/W3037555422","https://openalex.org/W2624044476","https://openalex.org/W2291699847","https://openalex.org/W2189036237","https://openalex.org/W3107313477","https://openalex.org/W2388298893"],"abstract_inverted_index":{"Five":[0],"farmlets":[1],"were":[2,21],"established":[3],"to":[4,13,101],"investigate":[5],"the":[6,69,87,116],"profitability":[7,134],"of":[8,89,138],"using":[9,64],"nitrogen":[10],"fertiliser":[11],"(N)":[12],"increase":[14],"pasture":[15,41],"supply":[16],"and":[17,31,47,57,60,71,82,91,133],"milksolids":[18,77,105,131],"production.":[19],"Farmlets":[20],"stocked":[22],"with":[23],"3.34":[24,100],"(low)":[25],"or":[26,35],"4.42":[27,102],"(high)":[28],"Friesian":[29],"cows/ha":[30,103],"received":[32],"0,":[33],"200":[34,52,90,112],"400":[36,65,92],"kg":[37,53,66,84,93,109,113],"N/ha/year.":[38],"Total":[39],"annual":[40],"production":[42,78,106,132],"was":[43,55],"increased":[44,79,120],"by":[45,58,80,107,124],"1.76":[46],"0.97":[48],"t":[49,62],"DM/ha":[50,63],"when":[51],"N/ha":[54,67,114],"applied":[56],"3.2":[59],"3.6":[61],"at":[68,115,135],"low":[70],"high":[72],"stocking":[73,97,118,127],"rate,":[74],"respectively.":[75,95],"Annual":[76],"142":[81],"218":[83],"MS/ha":[85],"after":[86],"application":[88],"N/ha,":[94],"Increasing":[96,126],"rate":[98,119,128],"from":[99],"reduced":[104,129],"99":[108],"MS/cow.":[110],"Applying":[111],"lower":[117],"economic":[121],"farm":[122],"surplus":[123],"$148/ha.":[125],"total":[130],"both":[136],"rates":[137],"N.":[139]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-09-25T08:18:29.962427","created_date":"2016-06-24T00:00:00"}
