{"id":"https://openalex.org/W2008562107","doi":"https://doi.org/10.1002/jsfa.2740520309","title":"Maize (Zea mays) response to nitrogen fertiliser on an ultisol in southern nigeria under two tillage and mulch treatments","display_name":"Maize (Zea mays) response to nitrogen fertiliser on an ultisol in southern nigeria under two tillage and mulch treatments","publication_year":1990,"publication_date":"1990-01-01","ids":{"openalex":"https://openalex.org/W2008562107","doi":"https://doi.org/10.1002/jsfa.2740520309","mag":"2008562107"},"language":"en","primary_location":{"id":"doi:10.1002/jsfa.2740520309","doi":"https://doi.org/10.1002/jsfa.2740520309","is_oa":false,"landing_page_url":"https://doi.org/10.1002/jsfa.2740520309","pdf_url":null,"source":{"id":"https://openalex.org/S206298197","display_name":"Journal of the Science of Food and Agriculture","issn_l":"0022-5142","issn":["0022-5142","1097-0010"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of the Science of Food and 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":"https://openalex.org/A5109096920","display_name":"Joe S. C. Mbagwu","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I11892038","display_name":"University of Nigeria","ror":"https://ror.org/01sn1yx84","country_code":"NG","type":"education","lineage":["https://openalex.org/I11892038"]}],"countries":["NG"],"is_corresponding":true,"raw_author_name":"Joe S C Mbagwu","raw_affiliation_strings":["Department of Soil Science, University of Nigeria, Nsukka, Nigeria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Soil Science, University of Nigeria, Nsukka, Nigeria","institution_ids":["https://openalex.org/I11892038"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5109096920"],"corresponding_institution_ids":["https://openalex.org/I11892038"],"apc_list":{"value":4620,"currency":"USD","value_usd":4620},"apc_paid":null,"fwci":1.6417,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.79510127,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"52","issue":"3","first_page":"365","last_page":"376"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12310","display_name":"Crop Yield and Soil Fertility","score":0.6538000106811523,"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/T12310","display_name":"Crop Yield and Soil Fertility","score":0.6538000106811523,"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":0.29789999127388,"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/T12792","display_name":"Soil Management and Crop Yield","score":0.026000000536441803,"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/maize","display_name":"maize","score":0.9959999918937683},{"id":"https://openalex.org/keywords/ultisol","display_name":"Ultisol","score":0.8830000162124634},{"id":"https://openalex.org/keywords/no-tillage","display_name":"no-tillage","score":0.8230000138282776},{"id":"https://openalex.org/keywords/mulching","display_name":"mulching","score":0.7390000224113464},{"id":"https://openalex.org/keywords/tillage","display_name":"tillage","score":0.47099998593330383},{"id":"https://openalex.org/keywords/nitrogen-use-efficiency","display_name":"nitrogen use efficiency","score":0.8220000267028809},{"id":"https://openalex.org/keywords/grain-yield","display_name":"grain yield","score":0.9190000295639038},{"id":"https://openalex.org/keywords/soil-water-retention","display_name":"soil water retention","score":0.871999979019165},{"id":"https://openalex.org/keywords/soil-temperature","display_name":"soil temperature","score":0.9739999771118164},{"id":"https://openalex.org/keywords/residual-soil-nitrogen","display_name":"residual soil nitrogen","score":0.6499999761581421},{"id":"https://openalex.org/keywords/leaf-area-index","display_name":"leaf area index","score":0.6190000176429749}],"concepts":[{"id":"https://openalex.org/C154108195","wikidata":"https://www.wikidata.org/wiki/Q1115789","display_name":"Ultisol","level":3,"score":0.9024646282196045},{"id":"https://openalex.org/C175092762","wikidata":"https://www.wikidata.org/wiki/Q549563","display_name":"Mulch","level":2,"score":0.8959430456161499},{"id":"https://openalex.org/C16397148","wikidata":"https://www.wikidata.org/wiki/Q878333","display_name":"Tillage","level":2,"score":0.7137775421142578},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.5624794960021973},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5346737504005432},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.5004849433898926},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.2995610237121582},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.20729497075080872},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.16730543971061707},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.11810159683227539},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.10399261116981506},{"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":"doi:10.1002/jsfa.2740520309","doi":"https://doi.org/10.1002/jsfa.2740520309","is_oa":false,"landing_page_url":"https://doi.org/10.1002/jsfa.2740520309","pdf_url":null,"source":{"id":"https://openalex.org/S206298197","display_name":"Journal of the Science of Food and Agriculture","issn_l":"0022-5142","issn":["0022-5142","1097-0010"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of the Science of Food and Agriculture","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2","score":1.0}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W595202397","https://openalex.org/W1969899577","https://openalex.org/W1970071406","https://openalex.org/W1976994903","https://openalex.org/W1978451127","https://openalex.org/W1990855664","https://openalex.org/W2023388530","https://openalex.org/W2034585960","https://openalex.org/W2045253690","https://openalex.org/W2046586271","https://openalex.org/W2068138156","https://openalex.org/W2069313262","https://openalex.org/W2073017165","https://openalex.org/W2077971449","https://openalex.org/W2099656668","https://openalex.org/W2487657653","https://openalex.org/W3209467740"],"related_works":["https://openalex.org/W3202303571","https://openalex.org/W2948498681","https://openalex.org/W2088185194","https://openalex.org/W3036835703","https://openalex.org/W1585991220","https://openalex.org/W7058453964","https://openalex.org/W2933094614","https://openalex.org/W2760025604","https://openalex.org/W7098212960","https://openalex.org/W3198241353"],"abstract_inverted_index":{"Abstract":[0],"The":[1,193],"response":[2,79],"of":[3,8,83,200],"maize":[4],"to":[5,80],"four":[6],"rates":[7],"nitrogen":[9,81,141],"(N)":[10],"fertiliser":[11],"(0,":[12],"60,":[13],"120":[14],"and":[15,31,42,49,97,107,155,160,182,190,204],"240":[16],"kg":[17,99,117],"N":[18,100,118],"ha\u22121)":[19],"on":[20,102,166,185],"an":[21],"ultisol":[22],"in":[23,36,121,138],"south\u2010eastern":[24],"Nigeria":[25],"was":[26,82,153,178],"evaluated":[27],"under":[28],"two":[29,32],"tillage":[30,148],"mulch":[33],"treatments.":[34],"Differences":[35],"plant":[37],"height,":[38],"leaf":[39],"area":[40],"index":[41],"grain":[43,77],"yield":[44,78,115],"between":[45,175],"the":[46,60,64,70,103,122,136,167,186,197],"conventionally":[47],"tilled":[48],"zero\u2010tillage":[50],"treatments":[51],"were":[52],"not":[53],"significant":[54],"at":[55,93,158],"P":[56],"<":[57],"0.05,":[58],"but":[59],"mulched":[61,170],"plots":[62,66,195],"out\u2010yielded":[63],"unmulched":[65,168],"by":[67],"23\u201346%":[68],"during":[69],"drier":[71],"seasons.":[72],"On":[73],"each":[74,147],"tillage\u2010mulch":[75],"combination,":[76],"a":[84],"quadratic":[85],"polynomial":[86],"form,":[87],"indicating":[88],"that":[89],"maximum":[90,150],"yields":[91],"occurred":[92],"123,":[94],"139,":[95],"130":[96],"142":[98],"ha\u22121":[101],"tilled\u2010mulched,":[104,187],"tilled\u2010unmulched,":[105,188],"untilled\u2010mulched":[106,127,189,194],"untilled\u2010unmulched":[108,130,191],"plots,":[109],"respectively.":[110],"Nitrogen":[111],"use":[112,142],"efficiency":[113,143],"(grain":[114],"per":[116],"applied)":[119],"decreased":[120],"order":[123],"tilled\u2010mulched":[124],"(32.6)":[125],">":[126,129,132],"(30.9)":[128],"(27.8)":[131],"tilled\u2010unmulched":[133],"(22.4)":[134],"where":[135],"figures":[137],"parentheses":[139],"represent":[140],"(kg":[144],"kg\u22121).":[145],"For":[146],"treatment":[149],"soil":[151],"temperature":[152],"higher":[154],"moisture":[156,173],"retained":[157],"2":[159],"10":[161],"days":[162,177],"after":[163],"saturation":[164],"lower":[165],"than":[169],"plots.":[171,192],"Percentage":[172],"loss":[174],"these":[176],"45.5,":[179],"83.3,":[180],"25.0":[181],"55.6":[183],"respectively,":[184],"had":[196],"highest":[198],"contents":[199],"residual":[201],"organic":[202],"carbon":[203],"total":[205],"N.":[206]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}