{"id":"https://openalex.org/W3133429900","doi":"https://doi.org/10.1088/1755-1315/648/1/012198","title":"The use of soil ameliorants and fertilizers to increase the yields of rice and maize in ultisols Lampung, Indonesia","display_name":"The use of soil ameliorants and fertilizers to increase the yields of rice and maize in ultisols Lampung, Indonesia","publication_year":2021,"publication_date":"2021-02-01","ids":{"openalex":"https://openalex.org/W3133429900","doi":"https://doi.org/10.1088/1755-1315/648/1/012198","mag":"3133429900"},"language":"en","primary_location":{"id":"doi:10.1088/1755-1315/648/1/012198","doi":"https://doi.org/10.1088/1755-1315/648/1/012198","is_oa":true,"landing_page_url":"https://doi.org/10.1088/1755-1315/648/1/012198","pdf_url":"https://iopscience.iop.org/article/10.1088/1755-1315/648/1/012198/pdf","source":{"id":"https://openalex.org/S4210195883","display_name":"IOP Conference Series Earth and Environmental Science","issn_l":"1755-1315","issn":["1755-1315","1755-1307"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":["norway-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOP Conference Series: Earth and Environmental Science","raw_type":"journal-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://iopscience.iop.org/article/10.1088/1755-1315/648/1/012198/pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5059383868","display_name":"Septiyana","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Septiyana","raw_affiliation_strings":["Indonesian Soil Research Institute, Bogor, Indonesia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indonesian Soil Research Institute, Bogor, Indonesia","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113858682","display_name":"Husnain","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Husnain","raw_affiliation_strings":["Indonesian Center for Agricultural Land Resources Research and Development, Bogor, Indonesia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indonesian Center for Agricultural Land Resources Research and Development, Bogor, Indonesia","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113114706","display_name":"L R Widowati","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"L R Widowati","raw_affiliation_strings":["Indonesian Soil Research Institute, Bogor, Indonesia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indonesian Soil Research Institute, Bogor, Indonesia","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000797544","display_name":"Adha Fatmah Siregar","orcid":"https://orcid.org/0000-0002-8801-4049","observed_orcids":["https://orcid.org/0000-0002-8801-4049"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"A F Siregar","raw_affiliation_strings":["Indonesian Soil Research Institute, Bogor, Indonesia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indonesian Soil Research Institute, Bogor, Indonesia","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041522964","display_name":"Ahmad Samsun","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"A Samsun","raw_affiliation_strings":["Indonesian Soil Research Institute, Bogor, Indonesia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indonesian Soil Research Institute, Bogor, Indonesia","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.7315,"has_fulltext":true,"cited_by_count":8,"citation_normalized_percentile":{"value":0.87988423,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"648","issue":"1","first_page":"012198","last_page":"012198"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12294","display_name":"Agricultural Science and Fertilization","score":0.9937000274658203,"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"}},"topics":[{"id":"https://openalex.org/T12294","display_name":"Agricultural Science and Fertilization","score":0.9937000274658203,"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":0.003700000001117587,"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/T12754","display_name":"Plant Growth and Agriculture Techniques","score":0.00139999995008111,"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/ultisol","display_name":"Ultisol","score":0.8859999775886536},{"id":"https://openalex.org/keywords/soil-ameliorants","display_name":"soil improvers","score":0.949999988079071},{"id":"https://openalex.org/keywords/fertilizers","display_name":"fertilizers","score":0.7450000047683716},{"id":"https://openalex.org/keywords/rice-yield","display_name":"rice yield","score":0.9559999704360962},{"id":"https://openalex.org/keywords/maize-yield","display_name":"maize yield","score":1.0},{"id":"https://openalex.org/keywords/biofertilizers","display_name":"biofertilizers","score":0.8550000190734863},{"id":"https://openalex.org/keywords/phosphate-rock","display_name":"phosphate rock","score":0.8930000066757202},{"id":"https://openalex.org/keywords/manure","display_name":"manure","score":0.9589999914169312},{"id":"https://openalex.org/keywords/soil-acidity","display_name":"soil acidity","score":0.9190000295639038},{"id":"https://openalex.org/keywords/soil-chemical-properties","display_name":"soil chemical properties","score":0.7360000014305115},{"id":"https://openalex.org/keywords/soil-physical-properties","display_name":"soil physical properties","score":0.7080000042915344},{"id":"https://openalex.org/keywords/fertilizer-recommendation","display_name":"fertilizer recommendation","score":0.625},{"id":"https://openalex.org/keywords/lampung","display_name":"Lampung","score":0.7710000276565552}],"concepts":[{"id":"https://openalex.org/C154108195","wikidata":"https://www.wikidata.org/wiki/Q1115789","display_name":"Ultisol","level":3,"score":0.8420422077178955},{"id":"https://openalex.org/C144938864","wikidata":"https://www.wikidata.org/wiki/Q4927286","display_name":"Randomized block design","level":2,"score":0.6640515923500061},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.6018182039260864},{"id":"https://openalex.org/C192039558","wikidata":"https://www.wikidata.org/wiki/Q3595890","display_name":"Biofertilizer","level":2,"score":0.5937551259994507},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5358399748802185},{"id":"https://openalex.org/C142796444","wikidata":"https://www.wikidata.org/wiki/Q181394","display_name":"Nutrient","level":2,"score":0.48006853461265564},{"id":"https://openalex.org/C75639521","wikidata":"https://www.wikidata.org/wiki/Q1283519","display_name":"Field experiment","level":2,"score":0.4628884196281433},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.45269447565078735},{"id":"https://openalex.org/C198072978","wikidata":"https://www.wikidata.org/wiki/Q565649","display_name":"Soil pH","level":3,"score":0.4325965642929077},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3916022479534149},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.33480095863342285},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.19809237122535706},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.13377881050109863},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1088/1755-1315/648/1/012198","doi":"https://doi.org/10.1088/1755-1315/648/1/012198","is_oa":true,"landing_page_url":"https://doi.org/10.1088/1755-1315/648/1/012198","pdf_url":"https://iopscience.iop.org/article/10.1088/1755-1315/648/1/012198/pdf","source":{"id":"https://openalex.org/S4210195883","display_name":"IOP Conference Series Earth and Environmental Science","issn_l":"1755-1315","issn":["1755-1315","1755-1307"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":["norway-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOP Conference Series: Earth and Environmental Science","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1088/1755-1315/648/1/012198","doi":"https://doi.org/10.1088/1755-1315/648/1/012198","is_oa":true,"landing_page_url":"https://doi.org/10.1088/1755-1315/648/1/012198","pdf_url":"https://iopscience.iop.org/article/10.1088/1755-1315/648/1/012198/pdf","source":{"id":"https://openalex.org/S4210195883","display_name":"IOP Conference Series Earth and Environmental Science","issn_l":"1755-1315","issn":["1755-1315","1755-1307"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":["norway-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"conference"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IOP Conference Series: Earth and Environmental Science","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger","score":0.9208999872207642}],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320336712","display_name":"Badan Penelitian dan Pengembangan Pertanian","ror":"https://ror.org/038v7z909"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3133429900.pdf","grobid_xml":"https://content.openalex.org/works/W3133429900.grobid-xml"},"referenced_works_count":7,"referenced_works":["https://openalex.org/W1521991302","https://openalex.org/W2076369829","https://openalex.org/W2117875322","https://openalex.org/W2244598133","https://openalex.org/W2332772431","https://openalex.org/W2334737058","https://openalex.org/W3025527488"],"related_works":["https://openalex.org/W2334737058","https://openalex.org/W2769171207","https://openalex.org/W7116057947","https://openalex.org/W7202351789","https://openalex.org/W2906006519","https://openalex.org/W2286600868","https://openalex.org/W2916686315","https://openalex.org/W7083010882","https://openalex.org/W7167088082","https://openalex.org/W7219985587"],"abstract_inverted_index":{"Abstract":[0],"The":[1,28,91,158],"Ultisols":[2],"has":[3],"high":[4],"soil":[5,40,149,162,172],"acidity,":[6],"Al":[7],"and":[8,11,18,26,42,53,75,88,128,138,164,176],"Fe":[9],"concentration":[10],"low":[12],"organic":[13],"matter,":[14],"nutrients,":[15],"base":[16],"saturation,":[17],"CEC,":[19],"that":[20,161],"limit":[21],"the":[22,33,36,62,131],"growth":[23],"of":[24,35,38,98,130,134,143],"rice":[25,52],"maize.":[27],"research":[29,58],"aimed":[30],"to":[31,45,50,170],"evaluate":[32],"effectiveness":[34],"application":[37,166],"fertilizers,":[39,135],"ameliorant,":[41],"their":[43],"combinations":[44],"improve":[46,171],"Ultisol":[47],"productivity":[48],"including":[49],"increase":[51],"maize":[54],"crops":[55],"yields.":[56,178],"This":[57],"was":[59,145],"conducted":[60],"at":[61],"Taman":[63],"Bogo":[64],"experimental":[65],"station,":[66],"Lampung":[67],"Timur":[68],"District,":[69],"for":[70,114],"two":[71],"growing":[72],"seasons":[73],"(GS-1":[74],"GS-2)":[76],"in":[77],"2019.":[78],"Field":[79],"experiment":[80],"used":[81],"randomized":[82],"block":[83],"design":[84],"with":[85],"eight":[86],"treatments":[87,92],"three":[89],"replications.":[90],"were":[93],"included":[94],"control,":[95],"recommendation":[96,132],"dosage":[97,133,142],"fertilizers":[99],"(for":[100],"rice:":[101],"250":[102],"kg":[103,107,111,117,121,125],"urea":[104,118],"ha\u22121,":[105,109,123],"200":[106],"SP-36":[108,122],"75":[110],"KCl":[112,126],"ha\u22121;":[113],"maize:":[115],"300":[116],"ha,":[119],"175":[120],"100":[124],"ha\u22121),":[127],"combination":[129],"manure,":[136],"biofertilizer,":[137],"rock":[139],"phosphate.":[140],"Recommendation":[141],"fertilizer":[144],"determined":[146],"using":[147],"upland":[148],"test":[150],"kit":[151],"(made":[152],"by":[153],"Indonesian":[154],"Soil":[155],"Research":[156],"Institute).":[157],"result":[159],"showed":[160],"ameliorant":[163],"biofertilizer":[165],"gave":[167],"significant":[168],"effect":[169],"chemical":[173],"physic":[174],"properties":[175],"plant":[177]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2021-03-01T00:00:00"}