{"id":"https://openalex.org/W4230523652","doi":"https://doi.org/10.1080/00380768.1997.11863718","title":"Nitrogen management and biological nitrogen fixation in sorghum/pigeonpea intercropping on Alfisols of the semi-arid tropics","display_name":"Nitrogen management and biological nitrogen fixation in sorghum/pigeonpea intercropping on Alfisols of the semi-arid tropics","publication_year":1997,"publication_date":"1997-01-01","ids":{"openalex":"https://openalex.org/W4230523652","doi":"https://doi.org/10.1080/00380768.1997.11863718"},"language":"en","primary_location":{"id":"doi:10.1080/00380768.1997.11863718","doi":"https://doi.org/10.1080/00380768.1997.11863718","is_oa":true,"landing_page_url":"https://doi.org/10.1080/00380768.1997.11863718","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/00380768.1997.11863718?needAccess=true","source":{"id":"https://openalex.org/S113296063","display_name":"Soil Science & Plant Nutrition","issn_l":"0038-0768","issn":["0038-0768","1747-0765"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Soil Science and Plant Nutrition","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://www.tandfonline.com/doi/pdf/10.1080/00380768.1997.11863718?needAccess=true","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5073001793","display_name":"Joseph Jackson Adu-Gyamfi","orcid":"https://orcid.org/0009-0006-7273-0223","observed_orcids":["https://orcid.org/0009-0006-7273-0223"]},"institutions":[{"id":"https://openalex.org/I4210163774","display_name":"International Crops Research Institute for the Semi-Arid Tropics","ror":"https://ror.org/0541a3n79","country_code":"IN","type":"nonprofit","lineage":["https://openalex.org/I4210163774"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Joseph J. Adu-Gyamfi","raw_affiliation_strings":["ICRISAT Asia Center, Patancheru, Andhra Pradesh, 502 324, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"ICRISAT Asia Center, Patancheru, Andhra Pradesh, 502 324, India","institution_ids":["https://openalex.org/I4210163774"]}]},{"author_position":"middle","author":{"id":null,"display_name":"O. Ito","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I162210093","display_name":"International Rice Research Institute","ror":"https://ror.org/0593p4448","country_code":"PH","type":"nonprofit","lineage":["https://openalex.org/I1286583668","https://openalex.org/I162210093"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"O. Ito","raw_affiliation_strings":["IRRI, P O Box 933, 1099 Manila, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IRRI, P O Box 933, 1099 Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"middle","author":{"id":null,"display_name":"T. Yoneyama","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"T. Yoneyama","raw_affiliation_strings":["National Agriculture Research Center, 3-1-1, Kannondai, Tsukuba, Ibaraki 305, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Agriculture Research Center, 3-1-1, Kannondai, Tsukuba, Ibaraki 305, Japan","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5112214372","display_name":"K. Katayama","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"K. Katayama","raw_affiliation_strings":["National Agriculture Research Center, 3-1-1, Kannondai, Tsukuba, Ibaraki 305, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Agriculture Research Center, 3-1-1, Kannondai, Tsukuba, Ibaraki 305, Japan","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.1862,"has_fulltext":true,"cited_by_count":12,"citation_normalized_percentile":{"value":0.75950815,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":"43","issue":"sup1","first_page":"1061","last_page":"1066"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12436","display_name":"Agronomic Practices and Intercropping Systems","score":0.9955999851226807,"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":0.9955999851226807,"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":0.004000000189989805,"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/T11470","display_name":"Legume Nitrogen Fixing Symbiosis","score":9.999999747378752e-05,"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/pigeonpea","display_name":"Cajanus cajan","score":0.8669999837875366},{"id":"https://openalex.org/keywords/sorghum","display_name":"sorghum","score":0.800000011920929},{"id":"https://openalex.org/keywords/nitrogen-fixation","display_name":"nitrogen fixation","score":0.8529999852180481},{"id":"https://openalex.org/keywords/nitrogen-application-timing","display_name":"nitrogen application timing","score":0.7210000157356262},{"id":"https://openalex.org/keywords/nitrogen-application-rate","display_name":"nitrogen application rate","score":0.5979999899864197},{"id":"https://openalex.org/keywords/15n-recovery","display_name":"15N recovery","score":0.8040000200271606},{"id":"https://openalex.org/keywords/alfisol","display_name":"Alfisol","score":0.7799999713897705},{"id":"https://openalex.org/keywords/semi-arid-tropics","display_name":"semi-arid tropics","score":0.9380000233650208},{"id":"https://openalex.org/keywords/grain-yield","display_name":"grain yield","score":0.8600000143051147},{"id":"https://openalex.org/keywords/dry-matter-production","display_name":"dry matter production","score":0.6389999985694885},{"id":"https://openalex.org/keywords/nitrogen-use-efficiency","display_name":"nitrogen use efficiency","score":0.6150000095367432},{"id":"https://openalex.org/keywords/vertisols","display_name":"Vertisols","score":0.6420000195503235},{"id":"https://openalex.org/keywords/low-nitrogen-soil","display_name":"low nitrogen soil","score":0.3930000066757202},{"id":"https://openalex.org/keywords/intercropping","display_name":"intercropping","score":0.44699999690055847},{"id":"https://openalex.org/keywords/sole-crops","display_name":"sole crops","score":0.3230000138282776},{"id":"https://openalex.org/keywords/shoot-nitrogen-content","display_name":"shoot nitrogen content","score":0.4269999861717224}],"concepts":[{"id":"https://openalex.org/C2778157034","wikidata":"https://www.wikidata.org/wiki/Q12111","display_name":"Sorghum","level":2,"score":0.9143060445785522},{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.8538186550140381},{"id":"https://openalex.org/C2781208722","wikidata":"https://www.wikidata.org/wiki/Q853859","display_name":"Intercropping","level":2,"score":0.834265947341919},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.7729930877685547},{"id":"https://openalex.org/C37991615","wikidata":"https://www.wikidata.org/wiki/Q1192084","display_name":"Vertisol","level":3,"score":0.7083290219306946},{"id":"https://openalex.org/C2777531858","wikidata":"https://www.wikidata.org/wiki/Q3239959","display_name":"Cajanus","level":2,"score":0.619343101978302},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5451192259788513},{"id":"https://openalex.org/C2781410044","wikidata":"https://www.wikidata.org/wiki/Q304506","display_name":"Alfisol","level":3,"score":0.5277814269065857},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.4320816397666931},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.20997437834739685},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1080/00380768.1997.11863718","doi":"https://doi.org/10.1080/00380768.1997.11863718","is_oa":true,"landing_page_url":"https://doi.org/10.1080/00380768.1997.11863718","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/00380768.1997.11863718?needAccess=true","source":{"id":"https://openalex.org/S113296063","display_name":"Soil Science & Plant Nutrition","issn_l":"0038-0768","issn":["0038-0768","1747-0765"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Soil Science and Plant Nutrition","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1080/00380768.1997.11863718","doi":"https://doi.org/10.1080/00380768.1997.11863718","is_oa":true,"landing_page_url":"https://doi.org/10.1080/00380768.1997.11863718","pdf_url":"https://www.tandfonline.com/doi/pdf/10.1080/00380768.1997.11863718?needAccess=true","source":{"id":"https://openalex.org/S113296063","display_name":"Soil Science & Plant Nutrition","issn_l":"0038-0768","issn":["0038-0768","1747-0765"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Soil Science and Plant Nutrition","raw_type":"journal-article"},"sustainable_development_goals":[{"score":1.0,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"},{"score":0.8125,"display_name":"Life on land","id":"https://metadata.un.org/sdg/15"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4230523652.pdf","grobid_xml":"https://content.openalex.org/works/W4230523652.grobid-xml"},"referenced_works_count":8,"referenced_works":["https://openalex.org/W85236242","https://openalex.org/W1495685698","https://openalex.org/W1750859257","https://openalex.org/W1996714396","https://openalex.org/W2090099203","https://openalex.org/W2142604910","https://openalex.org/W2319410825","https://openalex.org/W4253020982"],"related_works":["https://openalex.org/W1598574332","https://openalex.org/W569716756","https://openalex.org/W1996714396","https://openalex.org/W1995694187","https://openalex.org/W386433748","https://openalex.org/W628492872","https://openalex.org/W148639045","https://openalex.org/W7098903458","https://openalex.org/W24062137","https://openalex.org/W161229837"],"abstract_inverted_index":{"Pigeonpea":[0,285],"(Cajanus":[1],"cajan":[2],"L.":[3,9],"Millsp)":[4],"and":[5,24,33,55,71,82,88,95,132,149,181,195,212,242,271,279,313],"sorghum":[6,89,224,302,318],"(Sorghum":[7],"bicolor":[8],"Moench).":[10],"are":[11],"grown":[12,90],"as":[13,91,96],"intercrops":[14],"on":[15,77,99],"soils":[16],"typified":[17],"by":[18,86,264,311,317],"low":[19],"nitrogen":[20,50],"(N).":[21],"particularly":[22],"Alfisols":[23],"Vertisols":[25],"of":[26,31,38,53,60,69,73,186,191,203,291],"the":[27,67,187,233,265,268,295,301,307],"semi-arid":[28],"tropical":[29],"areas":[30],"India":[32],"East":[34],"Africa.":[35],"Proper":[36],"management":[37],"fertilizer":[39,74,83,315],"N":[40,75,79,84,106,109,127,157,183,201,221,258,270,293],"in":[41,102,232,239,246,257,276,282,319],"sorghum/pigeonpea":[42,321],"intercropping":[43],"systems":[44],"is":[45],"essential":[46],"to":[47,56,223,237,244,300,306],"enhancing":[48],"biological":[49,78],"fixing":[51],"ability":[52],"pigeonpea,":[54,308],"increasing":[57],"grain":[58,178],"yields":[59],"sorghum.In":[61],"a":[62,92,251,320],"3-year":[63],"study,":[64],"we":[65],"examined":[66],"effect":[68],"time":[70],"rates":[72,128],"application":[76,299],"fixation":[80],"(BNF)":[81],"recovery":[85,231,259,316],"pigeonpea":[87,312],"sole":[93,209,240,277],"crop,":[94,241],"an":[97,100,200],"intercrop":[98,218,283],"Alfisol":[101],"India.":[103],"In":[104],"1993,":[105],"(50":[107],"kg":[108,134,205,215,289],"ha\u22121)":[110],"was":[111,197,250],"all":[112],"applied":[113,137],"at":[114,118,140,146,151,168,199,213],"planting":[115,141],"(basal)":[116,142],"or":[117,143],"40":[119,147,160],"days":[120,153,161],"after":[121,154,162],"sowing":[122,155,163,169],"(delayed).":[123],"During":[124],"1994\u20131995,":[125],"four":[126],"0,":[129],"25,":[130],"50,":[131],"100":[133],"ha\u22121":[135,216,290],"were":[136],"(i)":[138],"100%":[139],"(ii)":[144],"67%":[145],"days,":[148],"33%":[150],"60":[152],"(delayed).Delaying":[156],"fertilization":[158,222],"until":[159],"(DAS),":[164],"rather":[165],"than":[166],"applying":[167],"significantly":[170,225],"increased":[171,229],"(p":[172,226,253],"<":[173,227,254],"0.001)":[174,228,255],"total":[175,182],"dry":[176],"matter,":[177],"yield":[179],"(GY)":[180],"content":[184],"(TNC)":[185],"sorghum,":[188,211],"but":[189,263,304],"not":[190,305],"pigeonpea.":[192],"Highest":[193],"GY":[194],"TNC":[196],"recorded":[198],"rate":[202],"50":[204],"ha":[206],"\u22121":[207],"with":[208],"crop":[210,278],"25":[214],"for":[217],"sorghum.":[219,284],"Delaying":[220],"15N":[230],"shoot":[234],"from":[235,274,280],"15":[236],"32%":[238,245],"10":[243],"intercrop.":[247],"Similarly,":[248],"there":[249],"significant":[252],"increase":[256],"(calculated":[260],"without":[261],"15N,":[262],"difference":[266],"between":[267,287],"nonfertilized":[269],"fertilized":[272],"plots)":[273],"43\u201359%":[275],"28\u201371%":[281],"fixed":[286],"120\u2013170":[288],"atmospheric":[292],"throughout":[294],"cropping":[296],"season.":[297],"Nitrogen":[298],"row,":[303],"enhanced":[309],"BNF":[310],"maximized":[314],"intercropping.":[322]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-10-02T10:15:12.560889","created_date":"2022-05-11T00:00:00"}
