{"id":"https://openalex.org/W2102225175","doi":"https://doi.org/10.5897/ajar.9000484","title":"Measuring the benefits of biological nitrogen fixation of soybean (Glycine max (l.) Merrill) in cassava (Manihot esculenta crantz) and soybean intercrop","display_name":"Measuring the benefits of biological nitrogen fixation of soybean (Glycine max (l.) Merrill) in cassava (Manihot esculenta crantz) and soybean intercrop","publication_year":2010,"publication_date":"2010-12-18","ids":{"openalex":"https://openalex.org/W2102225175","doi":"https://doi.org/10.5897/ajar.9000484","mag":"2102225175"},"language":"en","primary_location":{"id":"pmh:oai:oai.elixirpublishers.in:article/198","doi":null,"is_oa":true,"landing_page_url":"https://elixirpublishers.in/index.php/ajam/article/view/198","pdf_url":null,"source":{"id":"https://openalex.org/S7407075933","display_name":"African Journal of Agricultural Marketing","issn_l":"2375-1061","issn":["2375-1061"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2375-1061","raw_type":"info:eu-repo/semantics/article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://elixirpublishers.in/index.php/ajam/article/view/198","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5072008095","display_name":"S. I. Umeh","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S. I. Umeh","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5109214341","display_name":"Benjamin N. Mbah","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"B. N. Mbah","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":0.4863,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.72504461,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":"5","issue":"24","first_page":"3354","last_page":"3359"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12436","display_name":"Agronomic Practices and Intercropping Systems","score":0.9980000257492065,"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/T12436","display_name":"Agronomic Practices and Intercropping Systems","score":0.9980000257492065,"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":0.001500000013038516,"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/T12305","display_name":"Cassava research and cyanide","score":0.0,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/nitrogen-fixation","display_name":"nitrogen fixation","score":0.9869999885559082},{"id":"https://openalex.org/keywords/soybean","display_name":"soybean","score":0.9169999957084656},{"id":"https://openalex.org/keywords/cassava","display_name":"cassava","score":0.996999979019165},{"id":"https://openalex.org/keywords/intercropping","display_name":"intercropping","score":0.9710000157356262},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.7730000019073486},{"id":"https://openalex.org/keywords/soil-nitrogen","display_name":"soil nitrogen","score":0.9810000061988831},{"id":"https://openalex.org/keywords/land-equivalent-ratio","display_name":"land equivalent ratio","score":0.9710000157356262},{"id":"https://openalex.org/keywords/area-time-equivalent-ratio","display_name":"area time equivalent ratio","score":0.9589999914169312}],"concepts":[{"id":"https://openalex.org/C2781208722","wikidata":"https://www.wikidata.org/wiki/Q853859","display_name":"Intercropping","level":2,"score":0.915349006652832},{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.8182631731033325},{"id":"https://openalex.org/C3018601027","wikidata":"https://www.wikidata.org/wiki/Q83124","display_name":"Manihot esculenta","level":2,"score":0.668024480342865},{"id":"https://openalex.org/C144938864","wikidata":"https://www.wikidata.org/wiki/Q4927286","display_name":"Randomized block design","level":2,"score":0.6475000381469727},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.6009876728057861},{"id":"https://openalex.org/C181440489","wikidata":"https://www.wikidata.org/wiki/Q272467","display_name":"Nitrogen fixation","level":3,"score":0.5756520628929138},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.49749448895454407},{"id":"https://openalex.org/C202050865","wikidata":"https://www.wikidata.org/wiki/Q35852","display_name":"Hectare","level":3,"score":0.497165709733963},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.481845498085022},{"id":"https://openalex.org/C134121241","wikidata":"https://www.wikidata.org/wiki/Q899301","display_name":"Yield (engineering)","level":2,"score":0.42516911029815674},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.3625457286834717},{"id":"https://openalex.org/C144027150","wikidata":"https://www.wikidata.org/wiki/Q48803","display_name":"Horticulture","level":1,"score":0.3414173722267151},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.29717469215393066},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.13977384567260742},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","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/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:oai.elixirpublishers.in:article/198","doi":null,"is_oa":true,"landing_page_url":"https://elixirpublishers.in/index.php/ajam/article/view/198","pdf_url":null,"source":{"id":"https://openalex.org/S7407075933","display_name":"African Journal of Agricultural Marketing","issn_l":"2375-1061","issn":["2375-1061"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2375-1061","raw_type":"info:eu-repo/semantics/article"},{"id":"mag:2102225175","doi":"https://doi.org/10.5897/ajar.9000484","is_oa":true,"landing_page_url":"https://www.africaneditors.org/journal/AJAR/full-text-pdf/67315-117659","pdf_url":null,"source":{"id":"https://openalex.org/S44429004","display_name":"African Journal of Agricultural Research","issn_l":"1991-637X","issn":["1991-637X"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","norway-1","poland-20"],"host_organization":"https://openalex.org/P4310321074","host_organization_name":"Academic Journals","host_organization_lineage":["https://openalex.org/P4310321074"],"host_organization_lineage_names":["Academic Journals"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"African Journal of Agricultural Research","raw_type":null}],"best_oa_location":{"id":"pmh:oai:oai.elixirpublishers.in:article/198","doi":null,"is_oa":true,"landing_page_url":"https://elixirpublishers.in/index.php/ajam/article/view/198","pdf_url":null,"source":{"id":"https://openalex.org/S7407075933","display_name":"African Journal of Agricultural Marketing","issn_l":"2375-1061","issn":["2375-1061"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2375-1061","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[{"score":1.0,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"},{"score":0.7605999708175659,"display_name":"Life on land","id":"https://metadata.un.org/sdg/15"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W32225871","https://openalex.org/W1967825888","https://openalex.org/W1975188592","https://openalex.org/W2042248698","https://openalex.org/W2098571040","https://openalex.org/W2123747367","https://openalex.org/W2183431762","https://openalex.org/W2462859021"],"related_works":["https://openalex.org/W2315548537","https://openalex.org/W2585778271","https://openalex.org/W2025564638","https://openalex.org/W1905659866","https://openalex.org/W2031522048","https://openalex.org/W3023912244","https://openalex.org/W2104958443","https://openalex.org/W2073355629","https://openalex.org/W4408687753","https://openalex.org/W7133040207"],"abstract_inverted_index":{"The":[0,41,126,206],"measurement":[1],"of":[2,5,11,22,43,72,119,134,153,212,220],"the":[3,20,54,70,73,170,193,229],"benefits":[4],"biological":[6],"nitrogen":[7,136,149],"(N)":[8],"fixing":[9],"properties":[10],"soybean":[12,146,154,177,195],"in":[13,31,59,94,201],"cassava":[14,47,144],"and":[15,28,50,89,112,179,189,196,214],"soybeanintercrop":[16],"was":[17,65,77,100],"conducted":[18],"at":[19,36,86,102,184,224],"University":[21],"Nigeria,":[23],"Nsukka":[24],"between":[25],"2000,":[26],"2001":[27],"2002.":[29],"Changes":[30],"soil":[32],"nutrientconcentration":[33],"were":[34,222],"measured":[35],"0":[37],"\u2013":[38,132],"30":[39],"cm.":[40],"effects":[42],"N-":[44],"fertilization":[45],"on":[46],"tuber":[48,98,117],"yield":[49,99,118,152],"soil-N":[51],"weremonitored":[52],"for":[53],"three":[55],"seasons":[56],"using":[57],"factorial":[58],"randomized":[60],"complete":[61],"block":[62],"design.":[63],"There":[64],"no":[66],"apparentshading":[67],"effect":[68],"during":[69],"growth":[71],"two":[74],"crops.":[75],"Soybean":[76],"harvested":[78,85],"110":[79],"days":[80],"after":[81,92,187,204],"planting,":[82],"while":[83],"cassavawas":[84],"4,":[87],"8":[88,185],"12":[90,202],"months":[91,186,203],"planting":[93,188],"each":[95],"year.":[96],"Cassava":[97],"highest":[101,207],"intercrop":[103,106,120,230],"X":[104,107,121],"60and":[105],"45":[108,122,225],"kg":[109,123,130,198,226],"N":[110,124,227],"ha-1(30.0":[111],"29.9":[113],"t.":[114],"ha-1)":[115],"x":[116],"ha-1.":[125],"result":[127],"indicates":[128],"that60":[129],"(90":[131],"30)":[133],"applied":[135],"could":[137],"be":[138,157],"spared":[139],"per":[140],"hectare":[141],"by":[142,159],"intercropping":[143,160],"with":[145,161],"due":[147],"tosoybean":[148],"fixation.":[150],"Grain":[151],"may":[155],"not":[156],"compromised":[158],"cassava.":[162],"Soil":[163],"-":[164],"Nincreased":[165],"from":[166],"0.042":[167],"mg":[168,174,181,191],"kg-1before":[169],"experiment":[171],"to":[172],"0.168":[173],"kg-1in":[175,192],"sole":[176,194],"system":[178,183,231],"0.086":[180],"kg-1inintercrop":[182],"0.150":[190],"0.085":[197],"mg-1in":[199],"intercropsystem":[200],"planting.":[205],"land":[208],"equivalent":[209,218],"ratio":[210],"(LER)":[211],"2.3":[213],"area":[215],"\u00d7":[216],"time":[217],"ratio(ATER)":[219],"1.8":[221],"obtained":[223],"ha-1in":[228]},"counts_by_year":[{"year":2014,"cited_by_count":1}],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2016-06-24T00:00:00"}