{"id":"https://openalex.org/W2066280765","doi":"https://doi.org/10.1071/ea96143","title":"Leaf nitrogen as a guide for fertilising macadamia","display_name":"Leaf nitrogen as a guide for fertilising macadamia","publication_year":1997,"publication_date":"1997-08-27","ids":{"openalex":"https://openalex.org/W2066280765","doi":"https://doi.org/10.1071/ea96143","mag":"2066280765"},"language":"en","primary_location":{"id":"doi:10.1071/ea96143","doi":"https://doi.org/10.1071/ea96143","is_oa":false,"landing_page_url":"https://doi.org/10.1071/ea96143","pdf_url":null,"source":{"id":"https://openalex.org/S52276439","display_name":"Australian Journal of Experimental Agriculture","issn_l":"0816-1089","issn":["0816-1089","1446-5574"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320302","host_organization_name":"CSIRO Publishing","host_organization_lineage":["https://openalex.org/P4310320302"],"host_organization_lineage_names":["CSIRO Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Australian Journal of Experimental Agriculture","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"R. A. Stephenson","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R. A. Stephenson","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110011416","display_name":"E.C. Gallagher","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E. C. Gallagher","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5110192082","display_name":"Vivienne J. Doogan","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"V. J. Doogan","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":2.0061,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.85671934,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"37","issue":"5","first_page":"599","last_page":"604"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11546","display_name":"Plant Physiology and Cultivation Studies","score":0.8407999873161316,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant 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/T11546","display_name":"Plant Physiology and Cultivation Studies","score":0.8407999873161316,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant 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":0.0697999969124794,"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/T12754","display_name":"Plant Growth and Agriculture Techniques","score":0.04859999939799309,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/macadamia","display_name":"macadamia","score":0.9980000257492065},{"id":"https://openalex.org/keywords/leaf-nitrogen-content","display_name":"leaf nitrogen content","score":0.9190000295639038},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.8289999961853027},{"id":"https://openalex.org/keywords/fertilizer-management","display_name":"fertilizer management","score":0.6990000009536743},{"id":"https://openalex.org/keywords/nut-yield","display_name":"nut yield","score":0.6039999723434448},{"id":"https://openalex.org/keywords/nitrogen-nutrition","display_name":"nitrogen nutrition","score":0.5519999861717224},{"id":"https://openalex.org/keywords/urea","display_name":"urea","score":0.6639999747276306},{"id":"https://openalex.org/keywords/split-nitrogen-application","display_name":"split nitrogen application","score":0.6140000224113464},{"id":"https://openalex.org/keywords/nut-quality","display_name":"nut quality","score":0.4729999899864197}],"concepts":[{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.7585391998291016},{"id":"https://openalex.org/C2779582858","wikidata":"https://www.wikidata.org/wiki/Q157228","display_name":"Proteaceae","level":2,"score":0.5820651650428772},{"id":"https://openalex.org/C2909888759","wikidata":"https://www.wikidata.org/wiki/Q310041","display_name":"Macadamia nut","level":2,"score":0.5556666851043701},{"id":"https://openalex.org/C206391251","wikidata":"https://www.wikidata.org/wiki/Q1186738","display_name":"Nut","level":2,"score":0.5451076626777649},{"id":"https://openalex.org/C67961754","wikidata":"https://www.wikidata.org/wiki/Q127213","display_name":"Arboriculture","level":2,"score":0.5313278436660767},{"id":"https://openalex.org/C51832835","wikidata":"https://www.wikidata.org/wiki/Q1520901","display_name":"Environmental management system","level":3,"score":0.4497400224208832},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.4440559446811676},{"id":"https://openalex.org/C144027150","wikidata":"https://www.wikidata.org/wiki/Q48803","display_name":"Horticulture","level":1,"score":0.43772000074386597},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.43526801466941833},{"id":"https://openalex.org/C178165689","wikidata":"https://www.wikidata.org/wiki/Q156428","display_name":"Inflorescence","level":2,"score":0.42340540885925293},{"id":"https://openalex.org/C88862950","wikidata":"https://www.wikidata.org/wiki/Q11453","display_name":"Irrigation","level":2,"score":0.3736332058906555},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.35972869396209717},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.26773226261138916},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.2640545070171356},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.06404662132263184},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1071/ea96143","doi":"https://doi.org/10.1071/ea96143","is_oa":false,"landing_page_url":"https://doi.org/10.1071/ea96143","pdf_url":null,"source":{"id":"https://openalex.org/S52276439","display_name":"Australian Journal of Experimental Agriculture","issn_l":"0816-1089","issn":["0816-1089","1446-5574"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320302","host_organization_name":"CSIRO Publishing","host_organization_lineage":["https://openalex.org/P4310320302"],"host_organization_lineage_names":["CSIRO Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Australian Journal of Experimental Agriculture","raw_type":"journal-article"},{"id":"pmh:oai:era.daf.qld.gov.au:12408","doi":null,"is_oa":false,"landing_page_url":"http://era.daf.qld.gov.au/id/eprint/12408/","pdf_url":null,"source":{"id":"https://openalex.org/S4306402393","display_name":"Queensland Department of Agriculture and Fisheries archive of scientific and research publications (Queensland Department of Agriculture and Fisheries)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I2801244131","host_organization_name":"Queensland Government","host_organization_lineage":["https://openalex.org/I2801244131"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","score":0.991100013256073,"display_name":"Zero hunger"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2002209974","https://openalex.org/W2121423863","https://openalex.org/W2124838642","https://openalex.org/W2083507484","https://openalex.org/W2131424665","https://openalex.org/W2771089905","https://openalex.org/W1984180540","https://openalex.org/W1979935585","https://openalex.org/W2131401813","https://openalex.org/W2049501348"],"abstract_inverted_index":{"Summary.":[0],"Despite":[1],"the":[2,52,173,194,215],"lack":[3],"of":[4,10,33,40,59,63,88,172,177],"evidence":[5],"for":[6,24,168,196,218,253],"a":[7,30,238],"critical":[8],"level":[9,252],"leaf":[11,165,197,219,243],"nitrogen":[12,34,57,64,79,150,198,220,233,244],"in":[13,86,94,101,105,141,175,184,199],"macadamia,":[14],"fertiliser":[15,65],"management":[16],"has":[17],"been":[18],"largely":[19],"based":[20],"on":[21,29,235],"tentative":[22],"standards":[23],"high":[25,146,224],"yielding":[26],"trees.":[27,60],"Trees":[28],"lower":[31],"plane":[32],"nutrition,":[35],"however,":[36],"produced":[37],"higher":[38],"yields":[39,147],"good":[41],"quality":[42],"nuts.":[43],"This":[44],"study":[45],"was":[46,152,161],"therefore":[47,191],"carried":[48],"out":[49],"to":[50,83,205,221,231,246],"establish":[51],"relationship":[53],"between":[54,145],"yield":[55,160,176],"and":[56,68,76,103,113,118,127,131,148,170,186,248,258],"status":[58,151],"Three":[61],"rates":[62],"(0.5,":[66],"1.5":[67],"2.5":[69],"kg":[70],"urea/tree":[71],".":[72],"year;":[73],"230,":[74],"690":[75],"1150":[77],"g":[78],"respectively)":[80],"were":[81,138],"applied":[82],"macadamia":[84,200],"trees":[85],"1":[87,92],"5":[89],"application":[90,93],"strategies:":[91],"April":[95,102],"(floral":[96],"initiation);":[97],"2":[98],"applications,":[99,110,123],"one":[100,104],"June":[106,112],"(inflorescence":[107],"development);":[108],"3":[109,256],"April,":[111,124],"November":[114,126],"(rapid":[115],"nut":[116,120],"growth":[117],"premature":[119],"drop);":[121],"4":[122],"June,":[125],"January":[128],"(oil":[129],"accumulation);":[130],"12":[132],"monthly":[133],"split":[134],"applications.":[135],"Multiple":[136],"applications":[137,234],"all":[139],"equal":[140],"size.":[142],"The":[143],"association":[144],"low":[149],"confirmed.":[153],"In":[154],"some,":[155],"but":[156],"not":[157],"all,":[158],"years,":[159],"negatively":[162],"correlated":[163],"with":[164],"nitrogen,":[166],"accounting":[167],"47":[169],"59%":[171],"variation":[174],"commercially":[178],"acceptable":[179],"nuts":[180],"(>19":[181],"mm":[182],"diameter)":[183],"1991":[185],"1993,":[187],"respectively.":[188],"It":[189,227],"is":[190],"recommended":[192],"that":[193],"standard":[195],"be":[201,222,229],"lowered":[202],"from":[203],"1.4\u20131.5":[204],"1.3%":[206,247],"under":[207],"Australian":[208],"conditions.":[209],"These":[210],"results":[211],"raise":[212],"concerns":[213],"at":[214,236,254],"current":[216],"trend":[217],"as":[223,225],"1.8%.":[226],"would":[228],"prudent":[230],"cease":[232],"least":[237,255],"small":[239],"experimental":[240],"block":[241],"until":[242],"declined":[245],"then":[249],"maintain":[250],"this":[251],"years":[257],"monitor":[259],"yields.":[260]},"counts_by_year":[{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}