{"id":"https://openalex.org/W2033706503","doi":"https://doi.org/10.2134/jpa1997.0466","title":"Sunflower Response to Nitrogen and Phosphorus in Wheat\u2010Fallow Cropping Systems","display_name":"Sunflower Response to Nitrogen and Phosphorus in Wheat\u2010Fallow Cropping Systems","publication_year":1997,"publication_date":"1997-07-01","ids":{"openalex":"https://openalex.org/W2033706503","doi":"https://doi.org/10.2134/jpa1997.0466","mag":"2033706503"},"language":"en","primary_location":{"id":"doi:10.2134/jpa1997.0466","doi":"https://doi.org/10.2134/jpa1997.0466","is_oa":false,"landing_page_url":"https://doi.org/10.2134/jpa1997.0466","pdf_url":null,"source":{"id":"https://openalex.org/S125600968","display_name":"jpa","issn_l":"0890-8524","issn":["0890-8524","2689-4114"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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 Production 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/A5109949263","display_name":"Samuel B. Geleta","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":"S. Geleta","raw_affiliation_strings":["Panhandle Res. and Ext. Cent. Univ. of Nebraska 4502 Ave. I Scottsbluff NE 69361"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Panhandle Res. and Ext. Cent. Univ. of Nebraska 4502 Ave. I Scottsbluff NE 69361","institution_ids":["https://openalex.org/I114395901","https://openalex.org/I2802450327"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028150997","display_name":"David D. Baltensperger","orcid":"https://orcid.org/0000-0003-4511-5680","observed_orcids":["https://orcid.org/0000-0003-4511-5680"]},"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":true,"raw_author_name":"D. D. Baltensperger","raw_affiliation_strings":["Panhandle Res. and Ext. Cent. Univ. of Nebraska 4502 Ave. I Scottsbluff NE 69361"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Panhandle Res. and Ext. Cent. Univ. of Nebraska 4502 Ave. I Scottsbluff NE 69361","institution_ids":["https://openalex.org/I114395901","https://openalex.org/I2802450327"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015299654","display_name":"G. D. Binford","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I209244073","display_name":"Pioneer Hi-Bred","ror":"https://ror.org/02nn4s922","country_code":"US","type":"company","lineage":["https://openalex.org/I209244073"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"G. D. Binford","raw_affiliation_strings":["Pioneer Hi\u2010Bred Int. PO Box 280 Mt. Joy PA 17552"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Pioneer Hi\u2010Bred Int. PO Box 280 Mt. Joy PA 17552","institution_ids":["https://openalex.org/I209244073"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101084695","display_name":"J. F. Miller","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1312222531","display_name":"Agricultural Research Service","ror":"https://ror.org/02d2m2044","country_code":"US","type":"government","lineage":["https://openalex.org/I1312222531","https://openalex.org/I1336096307"]},{"id":"https://openalex.org/I1336096307","display_name":"United States Department of Agriculture","ror":"https://ror.org/01na82s61","country_code":"US","type":"government","lineage":["https://openalex.org/I1336096307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J. F. Miller","raw_affiliation_strings":["USDA-ARS; Fargo ND 58101"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"USDA-ARS; Fargo ND 58101","institution_ids":["https://openalex.org/I1312222531","https://openalex.org/I1336096307"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5028150997"],"corresponding_institution_ids":["https://openalex.org/I114395901","https://openalex.org/I2802450327"],"apc_list":null,"apc_paid":null,"fwci":0.5015,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.68288822,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":97},"biblio":{"volume":"10","issue":"3","first_page":"466","last_page":"472"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12742","display_name":"Sunflower and Safflower Cultivation","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T12742","display_name":"Sunflower and Safflower Cultivation","score":1.0,"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"}},{"id":"https://openalex.org/T12294","display_name":"Agricultural Science and Fertilization","score":9.999999747378752e-05,"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":0.0,"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/sunflower","display_name":"sunflower","score":0.9900000095367432},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.8019999861717224},{"id":"https://openalex.org/keywords/phosphorus-fertilization","display_name":"phosphorus fertilization","score":0.996999979019165},{"id":"https://openalex.org/keywords/sunflower-seed-yield","display_name":"sunflower seed yield","score":0.8539999723434448},{"id":"https://openalex.org/keywords/seed-oil-content","display_name":"seed oil content","score":0.9380000233650208},{"id":"https://openalex.org/keywords/chlorophyll-meter","display_name":"chlorophyll meter","score":0.8199999928474426},{"id":"https://openalex.org/keywords/residual-soil-nitrate","display_name":"residual soil nitrate","score":0.8640000224113464},{"id":"https://openalex.org/keywords/yield-goals","display_name":"yield goals","score":0.5849999785423279},{"id":"https://openalex.org/keywords/fertilizer-response","display_name":"fertilizer response","score":0.5329999923706055},{"id":"https://openalex.org/keywords/northern-high-plains","display_name":"Northern High Plains","score":0.699999988079071},{"id":"https://openalex.org/keywords/nebraska-panhandle","display_name":"Nebraska Panhandle","score":0.9430000185966492},{"id":"https://openalex.org/keywords/yield-variability","display_name":"yield variability","score":0.5360000133514404},{"id":"https://openalex.org/keywords/fertilizer-economics","display_name":"fertilizer economics","score":0.40799999237060547}],"concepts":[{"id":"https://openalex.org/C2779197568","wikidata":"https://www.wikidata.org/wiki/Q423986","display_name":"Sunflower","level":2,"score":0.8440784215927124},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.7515673637390137},{"id":"https://openalex.org/C168741863","wikidata":"https://www.wikidata.org/wiki/Q777671","display_name":"Sowing","level":2,"score":0.6788870692253113},{"id":"https://openalex.org/C2778181364","wikidata":"https://www.wikidata.org/wiki/Q171497","display_name":"Helianthus annuus","level":3,"score":0.6758667230606079},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5473610758781433},{"id":"https://openalex.org/C2776394811","wikidata":"https://www.wikidata.org/wiki/Q3634497","display_name":"Cropping system","level":3,"score":0.5401183366775513},{"id":"https://openalex.org/C137580998","wikidata":"https://www.wikidata.org/wiki/Q235352","display_name":"Crop","level":2,"score":0.4964755177497864},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.35951125621795654},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.31540024280548096}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.2134/jpa1997.0466","doi":"https://doi.org/10.2134/jpa1997.0466","is_oa":false,"landing_page_url":"https://doi.org/10.2134/jpa1997.0466","pdf_url":null,"source":{"id":"https://openalex.org/S125600968","display_name":"jpa","issn_l":"0890-8524","issn":["0890-8524","2689-4114"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"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 Production Agriculture","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2","score":0.991100013256073}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W1980268437","https://openalex.org/W2014427779","https://openalex.org/W2016650496","https://openalex.org/W2049758623","https://openalex.org/W2054361368","https://openalex.org/W2077688665"],"related_works":["https://openalex.org/W2545798531","https://openalex.org/W2033350973","https://openalex.org/W2785393623","https://openalex.org/W1031020556","https://openalex.org/W1996094416","https://openalex.org/W7049481374","https://openalex.org/W2256064905","https://openalex.org/W3013081075","https://openalex.org/W7026635070","https://openalex.org/W2014427779"],"abstract_inverted_index":{"Sunflower":[0,74,118,754],"(Helianthus":[1],"annuus":[2],"L.)":[3],"is":[4,26,281,362,393,442,482,523],"often":[5,363,483],"grown":[6,68,76,120,431,853],"as":[7,332,365,405,537,629,648,674,727,854],"an":[8,211,366,538,675,855],"alternative":[9,367,539,676],"crop":[10,368,385,540,677,857],"in":[11,69,80,121,179,278,369,386,432,454,489,500,507,516,530,541,553,606,632,678,681,703,740,768,810,836,858,885,900,928],"wheat":[12],"(Triticum":[13],"aestivum":[14],"L.)\u2010fallow":[15],"areas":[16],"of":[17,24,38,96,147,159,169,181,196,214,252,307,311,319,342,391,418,429,447,451,480,528,561,639,671,687,693,709,764,775,787,797,815,826,840,863,872,894,913,934,942,966,988],"the":[18,44,70,81,160,182,185,204,217,221,226,238,242,279,296,320,346,352,357,424,465,476,484,508,531,559,594,599,682,688,694,741,824,841,878,886,891,909,914,921,943,961,983],"northern":[19,71,358,532,683],"High":[20,72,359,477,533,684],"Plains.":[21,73,685],"Optimum":[22,389],"management":[23,390],"fertilizers":[25,62,110,254,317,850,876],"important":[27,394],"to":[28,42,57,313,372,377,422,494,738,772,817,832,851,896,936],"maximize":[29],"profit":[30,379,397,903],"potential":[31,398],"and":[32,46,54,60,86,99,113,142,155,207,223,275,291,323,334,340,376,399,408,410,426,472,492,565,573,584,588,624,643,729,803,848,874,932,938,946,963,986],"avoid":[33],"environmental":[34,45,402,473],"concerns.":[35],"The":[36,201,269,286,309,416,766,795,861,925],"objectives":[37],"this":[39,419,501,811,864,901],"research":[40],"were":[41,93,111,288,551,601,697],"determine":[43,423],"soil":[47,162,302,321,827,944],"conditions":[48,978],"where":[49],"seed":[50,133,153,177,187,239,243,267,669,710,751,755,790,801,804,915,930,964],"yield,":[51],"oil":[52,156,188,208,244,462,752,756,769,793,805,911],"content,":[53],"chlorophyll":[55],"responses":[56,493],"added":[58],"N":[59,97,170,197,205,253,262,274,314,322,409,425,440,452,459,506,526,619,658,691,701,739,747,776,847,873,923,937,945,956],"P":[61,148,276,316,324,411,427,640,788,798,819,828,835,849,875,939,947,958],"should":[63],"be":[64,821,905],"expected":[65],"for":[66,130,198,216,220,225,351,395,400,444,505,877],"sunflower":[67,132,152,343,348,361,430,518,529,661,672,750,852,929,989],"was":[75,119,128,190,421,712,758,779,807,830],"over":[77],"40":[78],"site\u2010years":[79,884],"Nebraska":[82,556,562],"Panhandle":[83,563],"during":[84,571,982],"1993":[85,572],"1994":[87],"on":[88,470,513,597,660,714,749,799],"producers\u2019":[89],"fields.":[90],"Fertilizer":[91,126],"treatments":[92],"four":[94,554],"rates":[95,620,638],"(0,35,70,":[98],"105":[100,625],"lb":[101,107,626,645,898],"N/acre)":[102,627],"with":[103,250,611,636,716],"or":[104,165,241,301,315,792,957],"without":[105,916],"69":[106,644],"P2O5/acre.":[108],"All":[109],"broadcast":[112],"incorporated":[114],"shortly":[115],"after":[116],"planting.":[117,308],"a":[122,433,542,607,633],"wheat\u2010sunflower\u2010fallow":[123,434],"cropping":[124,374,435],"system.":[125,436],"effect":[127,466,655,744],"evaluated":[129],"three":[131,612],"yield":[134,154,166,178,228,240,488,711,783,791,802,868,879,892,919,931,962],"goals:":[135],"high":[136,833],"(>1000":[137],"lb/acre),":[138,141],"medium":[139,831],"(500\u20131000":[140],"low":[143,227,455],"(<500":[144],"lb/acre).":[145],"Application":[146],"did":[149,174,233,263,656,665,745],"not":[150,175,234,264,282,292,497,666,698,808],"influence":[151,176,236,789,796,960],"content.":[157,245],"Regardless":[158,686],"initial":[161],"nitrate":[163,231,406,631,690,719],"level":[164,232,825,893],"goals,":[167],"application":[168,251,277,778,786,871],"beyond":[171],"35":[172],"lb/acre":[173],"80%":[180,839],"site\u2010years.":[183,200,705,842],"However,":[184,464],"percentage":[186],"content":[189,209,304,757,770,806,912],"reduced":[191,461,760],"significantly":[192,235,293,759],"by":[193,295,380,558,700,761,823,908],"increasing":[194,762],"levels":[195,206],"most":[199,704],"relationship":[202],"between":[203],"had":[210],"13":[212],"value":[213],"0.96":[215],"high,":[218],"0.93":[219],"medium,":[222],"0.94":[224],"goals.":[229,784],"Residual":[230],"either":[237],"Chlorophyll":[246],"meter":[247],"readings":[248],"increased":[249,773],"at":[255,259,305,336,569,614,731,882,890,979],"six":[256],"site\u2010years;":[257],"however,":[258],"these":[260],"sites":[261],"Significantly":[265],"affect":[266],"yield.":[268],"results":[270,453,862],"indicate":[271,326,949],"that":[272,327,486,829,950],"fertilizer":[273,392,495,777],"region":[280,509],"producing":[283,519],"economic":[284],"returns.":[285],"yields":[287,670,696],"highly":[289],"variable":[290],"affected":[294,699,906],"growing":[297,381,951,984],"season,":[298,985],"total":[299],"precipitation,":[300],"moisture":[303,481],"time":[306],"lack":[310,479,814,933],"response":[312,737,816,935],"regardless":[318,941],"level,":[325],"other":[328,517,723,954],"growth":[329,338,733],"factors":[330,350,722,953,969],"such":[331,404,726],"precipitation":[333,728],"temperature":[335,730],"critical":[337,443,732,980],"stages":[339,981],"types":[341],"cultivars":[344],"are":[345,496,510,593,735],"possible":[347],"yield\u2010controlling":[349],"region.":[353,742,887],"Research":[354,564],"Question":[355],"In":[356,475],"Plains,":[360,478],"used":[364,536,673],"wheat\u2010fallow":[370,543,679,859],"rotations":[371,680],"diversify":[373],"systems":[375],"increase":[378,668],"more":[382,837],"than":[383,724,838,955],"one":[384],"2":[387],"yr.":[388],"maximum":[396],"avoiding":[401],"concerns":[403],"leaching":[407],"runoff":[412],"from":[413,870,920],"surface":[414],"application.":[415],"objective":[417],"study":[420,865],"requirement":[428],"Literature":[437],"Summary":[438],"Soil":[439],"status":[441,692],"optimal":[445],"production":[446],"oilseed":[448],"crops.":[449],"Lack":[450],"yields,":[456],"while":[457],"excess":[458],"promotes":[460],"contents.":[463],"may":[467,820,970],"vary":[468],"depending":[469],"soils":[471,596,715],"conditions.":[474],"factor":[485],"limits":[487],"many":[490],"years":[491],"usually":[498],"observed":[499],"situation.":[502],"Current":[503],"recommendations":[504],"based":[511],"primarily":[512],"data":[514],"developed":[515],"regions.":[520],"No":[521],"database":[522],"available":[524,834],"concerning":[525],"fertilization":[527,641,664,959],"Plains":[534],"when":[535],"rotation.":[544],"Study":[545],"Description":[546],"Forty":[547],"site\u2010year":[548],"field":[549],"experiments":[550,600],"conducted":[552],"western":[555],"counties":[557],"University":[560],"Extension":[566],"Center,":[567],"located":[568],"Scottsbluff,":[570],"1994.":[574],"Soils:":[575],"Alliance,":[576],"Keith,":[577],"Kuma,":[578],"Rosebud,":[579],"Satanta,":[580],"Tripp":[581],"loam,":[582,587],"Duroc":[583],"Keith":[585],"silt":[586],"Bayard":[589],"fine":[590],"sandy":[591],"loam":[592],"major":[595],"which":[598],"conducted.":[602],"Experimental":[603],"Design:":[604],"Factorial":[605],"randomized":[608],"complete":[609],"block":[610],"replications":[613],"each":[615],"site\u2010year.":[616],"Treatments:":[617],"Four":[618],"(0,":[621],"35,":[622],"70,":[623],"applied":[628,647,657,746,818,922],"ammonium":[630],"factorial":[634],"combination":[635],"two":[637],"(0":[642],"P2O5/acre)":[646],"triple":[649],"super":[650],"phosphate":[651],"Applied":[652],"Questions":[653],"What":[654,743],"have":[659,748],"yield?":[662],"Nitrogen":[663],"routinely":[667],"residual":[689,718],"soils,":[695],"additions":[702],"A":[706],"wide":[707],"range":[708,880],"obtained":[713,881,899],"comparable":[717,780],"N,":[720,725],"indicating":[721],"stages,":[734],"limiting":[736],"content?":[753,794],"addition":[763],"N.":[765],"decline":[767],"due":[771],"rate":[774],"across":[781],"all":[782],"Did":[785],"both":[800],"significant":[809],"experiment.":[812],"This":[813],"explained":[822],"Should":[843],"growers":[844],"stop":[845],"applying":[846],"alternate":[856],"rotation?":[860],"show":[866],"no":[867],"benefit":[869],"37":[883],"More":[888],"importantly,":[889],"up":[895],"1900":[897],"study,":[902],"will":[904],"negatively":[907],"declining":[910],"any":[917],"improved":[918],"fertilizers.":[924],"great":[926],"variability":[927],"fertilizers,":[940],"status,":[948],"condition":[952],"quality":[965],"sunflower.":[967],"These":[968],"include":[971],"plant":[972],"population,":[973],"moisture,":[974],"temperature,":[975],"early":[976],"frost":[977],"type":[987],"cultivars.":[990]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":3}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}
