{"id":"https://openalex.org/W2051699781","doi":"https://doi.org/10.2134/agronj1987.00021962007900060022x","title":"Nitrogen from Soybean for Dryland Sorghum1","display_name":"Nitrogen from Soybean for Dryland Sorghum1","publication_year":1987,"publication_date":"1987-11-01","ids":{"openalex":"https://openalex.org/W2051699781","doi":"https://doi.org/10.2134/agronj1987.00021962007900060022x","mag":"2051699781"},"language":"en","primary_location":{"id":"doi:10.2134/agronj1987.00021962007900060022x","doi":"https://doi.org/10.2134/agronj1987.00021962007900060022x","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronj1987.00021962007900060022x","pdf_url":null,"source":{"id":"https://openalex.org/S139950591","display_name":"Agronomy Journal","issn_l":"0002-1962","issn":["0002-1962","1072-9623","1435-0645"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","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":"Agronomy Journal","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/A5044322380","display_name":"Lucas Phirie Gakale","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"L. P. Gakale","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5029545714","display_name":"Max D. Clegg","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I114395901","display_name":"University of Nebraska\u2013Lincoln","ror":"https://ror.org/043mer456","country_code":"US","type":"education","lineage":["https://openalex.org/I114395901"]},{"id":"https://openalex.org/I2802450327","display_name":"University of Nebraska System","ror":"https://ror.org/0238rvs44","country_code":"US","type":"education","lineage":["https://openalex.org/I2802450327"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M. D. Clegg","raw_affiliation_strings":["Former graduate student (support USAID) (currently senior agronomist, Dep. of Agric. Res., Gabarone, Botswana) and associate professor, respectively, Dep. of Agronomy, Univ. of Nebraska, Lincoln, NE 68583"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Former graduate student (support USAID) (currently senior agronomist, Dep. of Agric. Res., Gabarone, Botswana) and associate professor, respectively, Dep. of Agronomy, Univ. of Nebraska, Lincoln, NE 68583","institution_ids":["https://openalex.org/I114395901","https://openalex.org/I2802450327"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1800,"currency":"USD","value_usd":1800},"apc_paid":null,"fwci":1.128,"has_fulltext":false,"cited_by_count":19,"citation_normalized_percentile":{"value":0.70264766,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":93},"biblio":{"volume":"79","issue":"6","first_page":"1057","last_page":"1061"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12436","display_name":"Agronomic Practices and Intercropping Systems","score":0.7300000190734863,"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":0.7300000190734863,"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":0.2281000018119812,"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/T12310","display_name":"Crop Yield and Soil Fertility","score":0.018699999898672104,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/residual-soil-nitrogen","display_name":"residual soil nitrogen","score":0.7419999837875366},{"id":"https://openalex.org/keywords/nitrogen-uptake","display_name":"nitrogen uptake","score":0.7099999785423279},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.5580000281333923},{"id":"https://openalex.org/keywords/dryland-sorghum","display_name":"dryland sorghum","score":0.843999981880188},{"id":"https://openalex.org/keywords/grain-yield","display_name":"grain yield","score":0.7200000286102295},{"id":"https://openalex.org/keywords/flowering-time","display_name":"flowering time","score":0.6449999809265137},{"id":"https://openalex.org/keywords/nitrate-nitrogen","display_name":"nitrate nitrogen","score":0.7070000171661377}],"concepts":[{"id":"https://openalex.org/C2778157034","wikidata":"https://www.wikidata.org/wiki/Q12111","display_name":"Sorghum","level":2,"score":0.9811288714408875},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.8059810996055603},{"id":"https://openalex.org/C113578266","wikidata":"https://www.wikidata.org/wiki/Q1131303","display_name":"Loam","level":3,"score":0.7373712062835693},{"id":"https://openalex.org/C175760724","wikidata":"https://www.wikidata.org/wiki/Q191258","display_name":"Crop rotation","level":3,"score":0.7145185470581055},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5776522159576416},{"id":"https://openalex.org/C2776394811","wikidata":"https://www.wikidata.org/wiki/Q3634497","display_name":"Cropping system","level":3,"score":0.5137444734573364},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4394950270652771},{"id":"https://openalex.org/C137580998","wikidata":"https://www.wikidata.org/wiki/Q235352","display_name":"Crop","level":2,"score":0.4213274419307709},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.2834663391113281},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.2302905023097992},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.21923431754112244},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.07439908385276794}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2134/agronj1987.00021962007900060022x","doi":"https://doi.org/10.2134/agronj1987.00021962007900060022x","is_oa":false,"landing_page_url":"https://doi.org/10.2134/agronj1987.00021962007900060022x","pdf_url":null,"source":{"id":"https://openalex.org/S139950591","display_name":"Agronomy Journal","issn_l":"0002-1962","issn":["0002-1962","1072-9623","1435-0645"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","ki-jl-1","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":"Agronomy Journal","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},{"display_name":"Life on land","id":"https://metadata.un.org/sdg/15","score":0.6000000238418579}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2080728085","https://openalex.org/W2065805762","https://openalex.org/W2080908982","https://openalex.org/W2029514171","https://openalex.org/W1986929103","https://openalex.org/W2005598998","https://openalex.org/W2396612755","https://openalex.org/W2469186891","https://openalex.org/W2021546942","https://openalex.org/W2027393279"],"abstract_inverted_index":{"Abstract":[0],"Crop":[1],"and":[2,41,47,75,91],"soil":[3,49,53,198],"data":[4],"were":[5,80,192],"collected":[6],"for":[7],"2":[8,176],"yr":[9],"(1984\u20131985)":[10],"from":[11],"a":[12,59],"soybean":[13,34,152,163,207],"[Glycine":[14],"max":[15],"(L.)":[16,21],"Merr.]\u2010grain":[17],"sorghum":[18,45,84,90,99,140,150,166,172,220],"[Sorghum":[19],"bicolor":[20],"Moench]":[22],"rotation":[23,92,104,121],"experiment":[24],"established":[25],"in":[26,86,120,202],"1974,":[27],"to":[28,82,170,211],"evaluate":[29],"the":[30,44,55,83,88,108,124,144,181,189],"residual":[31,48,197],"effects":[32],"of":[33,43,71,126,147,196],"on":[35],"N":[36,50,78,96,109,129,184,199,214,224],"uptake,":[37],"some":[38],"agronomic":[39],"characters,":[40],"yield":[42],"crop":[46,85],"accumulation.":[51],"The":[52],"at":[54],"experimental":[56],"site":[57],"was":[58,100,112,209],"Sharpsburg":[60],"silt":[61],"clay":[62],"loam":[63],"(fine,":[64],"montmorillonitic,":[65],"mesic":[66],"Typic":[67],"Argiudoll).":[68],"Fertilizer":[69],"rates":[70],"0,":[72],"56,":[73],"112,":[74],"168":[76],"kg":[77,114,128,183,213,223],"ha\u22121":[79,115,130,185,215,225],"applied":[81],"both":[87],"continuous":[89,159,171,219],"cropping":[93,105,190],"sequences.":[94],"Total":[95],"uptake":[97],"by":[98,103],"significantly":[101],"increased":[102,164],"(P<0.05)":[106],"when":[107,173,221],"fertilizer":[110,148],"rate":[111],"112":[113,182],"or":[116,122,131,179,226],"less.":[117],"Sorghum":[118],"grown":[119,139],"with":[123,162],"application":[125],"56":[127,222],"more":[132,155,216],"flowered":[133],"6.1":[134],"days":[135],"earlier":[136],"than":[137,157,217],"continuously":[138],"without":[141],"N.":[142],"At":[143,178],"zero":[145],"level":[146],"N,":[149],"after":[151,206,218],"yielded":[153],"85%":[154],"grain":[156,167],"did":[158],"sorghum.":[160],"Rotation":[161],"subsequent":[165],"14%":[168],"compared":[169],"averaged":[174],"over":[175],"yr.":[177],"above":[180],"level,":[186],"differences":[187],"between":[188],"systems":[191],"not":[193],"different.":[194],"Estimates":[195],"as":[200],"NO\u22123\u2212N":[201],"1985":[203],"showed":[204],"that":[205],"there":[208],"50":[210],"60":[212],"less":[227],"had":[228],"been":[229],"applied.":[230]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}