{"id":"https://openalex.org/W2029675995","doi":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","title":"Tillage Depth Influence on Soil Nitrogen Distribution and Availability in a Rice Lowland","display_name":"Tillage Depth Influence on Soil Nitrogen Distribution and Availability in a Rice Lowland","publication_year":1996,"publication_date":"1996-07-01","ids":{"openalex":"https://openalex.org/W2029675995","doi":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","mag":"2029675995"},"language":"en","primary_location":{"id":"doi:10.2136/sssaj1996.03615995006000040028x","doi":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","is_oa":false,"landing_page_url":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","pdf_url":null,"source":{"id":"https://openalex.org/S59755854","display_name":"Soil Science Society of America Journal","issn_l":"0361-5995","issn":["0361-5995","1435-0661"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","jufo-2","ki-jl-2","norway-2","poland-100","russia-white-list-2"],"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":"Soil Science Society of America 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/A5113315644","display_name":"D. K. Kundu","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":"D. K. Kundu","raw_affiliation_strings":["Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014919859","display_name":"Jagdish Kumar Ladha","orcid":"https://orcid.org/0000-0001-6517-5379","observed_orcids":["https://orcid.org/0000-0001-6517-5379"]},"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":true,"raw_author_name":"J. K. Ladha","raw_affiliation_strings":["Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"last","author":{"id":null,"display_name":"E. Lapitan\u2010de Guzman","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":"E. Lapitan\u2010de Guzman","raw_affiliation_strings":["Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Soil and Water Sciences Division International Rice Research Inst. P.O. Box 933 Manila 1099 Philippines","institution_ids":["https://openalex.org/I162210093"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5014919859"],"corresponding_institution_ids":["https://openalex.org/I162210093"],"apc_list":{"value":2020,"currency":"USD","value_usd":2020},"apc_paid":null,"fwci":5.1572,"has_fulltext":false,"cited_by_count":57,"citation_normalized_percentile":{"value":0.9516515,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"60","issue":"4","first_page":"1153","last_page":"1159"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.8105000257492065,"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/T12045","display_name":"Rice Cultivation and Yield Improvement","score":0.8105000257492065,"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/T12792","display_name":"Soil Management and Crop Yield","score":0.12189999967813492,"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/T12294","display_name":"Agricultural Science and Fertilization","score":0.03310000151395798,"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/tillage-depth","display_name":"tillage depth","score":0.9580000042915344},{"id":"https://openalex.org/keywords/deep-tillage","display_name":"deep tillage","score":0.8420000076293945},{"id":"https://openalex.org/keywords/soil-nitrogen-distribution","display_name":"soil nitrogen distribution","score":0.7459999918937683},{"id":"https://openalex.org/keywords/rice","display_name":"rice","score":0.8889999985694885},{"id":"https://openalex.org/keywords/paddy-rice","display_name":"paddy rice","score":0.7369999885559082},{"id":"https://openalex.org/keywords/alfisol","display_name":"Alfisol","score":0.7850000262260437},{"id":"https://openalex.org/keywords/inorganic-nitrogen","display_name":"inorganic nitrogen","score":0.6370000243186951},{"id":"https://openalex.org/keywords/rice-nitrogen-uptake","display_name":"rice nitrogen uptake","score":0.8519999980926514},{"id":"https://openalex.org/keywords/root-proliferation","display_name":"root proliferation","score":0.6890000104904175},{"id":"https://openalex.org/keywords/nitrogen-use-efficiency","display_name":"nitrogen use efficiency","score":0.8659999966621399},{"id":"https://openalex.org/keywords/kjeldahl-nitrogen","display_name":"Kjeldahl nitrogen","score":0.7540000081062317},{"id":"https://openalex.org/keywords/nitrogen-loss","display_name":"nitrogen loss","score":0.5929999947547913}],"concepts":[{"id":"https://openalex.org/C121923324","wikidata":"https://www.wikidata.org/wiki/Q681004","display_name":"Subsoil","level":3,"score":0.8929764032363892},{"id":"https://openalex.org/C16397148","wikidata":"https://www.wikidata.org/wiki/Q878333","display_name":"Tillage","level":2,"score":0.866581916809082},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.6857244372367859},{"id":"https://openalex.org/C2781410044","wikidata":"https://www.wikidata.org/wiki/Q304506","display_name":"Alfisol","level":3,"score":0.6045170426368713},{"id":"https://openalex.org/C180429540","wikidata":"https://www.wikidata.org/wiki/Q11464","display_name":"Plough","level":2,"score":0.5483858585357666},{"id":"https://openalex.org/C156634047","wikidata":"https://www.wikidata.org/wiki/Q878214","display_name":"Soil horizon","level":3,"score":0.5346108675003052},{"id":"https://openalex.org/C2780696901","wikidata":"https://www.wikidata.org/wiki/Q5166322","display_name":"Conventional tillage","level":3,"score":0.5214394927024841},{"id":"https://openalex.org/C2778543611","wikidata":"https://www.wikidata.org/wiki/Q161426","display_name":"Oryza sativa","level":3,"score":0.48508039116859436},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.46552416682243347},{"id":"https://openalex.org/C137660486","wikidata":"https://www.wikidata.org/wiki/Q732240","display_name":"Growing season","level":2,"score":0.4224318265914917},{"id":"https://openalex.org/C159750122","wikidata":"https://www.wikidata.org/wiki/Q96621023","display_name":"Soil water","level":2,"score":0.34331485629081726},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.26554036140441895},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.20780861377716064},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.1609952449798584},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.2136/sssaj1996.03615995006000040028x","doi":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","is_oa":false,"landing_page_url":"https://doi.org/10.2136/sssaj1996.03615995006000040028x","pdf_url":null,"source":{"id":"https://openalex.org/S59755854","display_name":"Soil Science Society of America Journal","issn_l":"0361-5995","issn":["0361-5995","1435-0661"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","jufo-2","ki-jl-2","norway-2","poland-100","russia-white-list-2"],"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":"Soil Science Society of America Journal","raw_type":"journal-article"},{"id":"pmh:oai:cgspace.cgiar.org:10568/167296","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/10568/167296","pdf_url":null,"source":{"id":"https://openalex.org/S4306402055","display_name":"CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1286583668","host_organization_name":"CGIAR","host_organization_lineage":["https://openalex.org/I1286583668"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Kundu, D. K.; Ladha, J. K. and Lapitan\u2010de Guzman, E. 1996. Tillage depth influence on soil nitrogen distribution and availability in a rice lowland. Soil Science Soc of Amer J, Volume 60 no. 4 p. 1153-1159","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.991100013256073,"id":"https://metadata.un.org/sdg/2","display_name":"Zero hunger"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2996896649","https://openalex.org/W3010434828","https://openalex.org/W2320552459","https://openalex.org/W2363490120","https://openalex.org/W2068600264","https://openalex.org/W2029578987","https://openalex.org/W7223142135","https://openalex.org/W2734547210","https://openalex.org/W7163577765","https://openalex.org/W2980170231"],"abstract_inverted_index":{"Abstract":[0],"Previous":[1],"studies":[2],"using":[3],"artificial":[4],"barriers":[5],"at":[6,84],"selected":[7],"depths":[8],"have":[9,37],"shown":[10],"the":[11,79,85,88,94,104,140,147,161,166,197,223],"importance":[12],"of":[13,50,67,81,87,131,191,199,208,219,230,252],"N":[14,28,54,91,101,116,124,142,164,172,210,221,240,261],"supply":[15,143],"from":[16,146],"soil":[17,224,239,257],"below":[18],"15":[19,136,186],"cm":[20,133,159],"to":[21,57,60,64,96,128,135,149,157,176,185,196,202,211,246,259],"rice":[22,100,171],"(":[23],"Oryza":[24],"sativa":[25],"L.).":[26],"Subsoil":[27],"availability":[29,49,92],"and":[30,48,62,99,117,169,205,216,250],"its":[31],"use":[32,262],"by":[33,78,174],"wetland":[34],"rice,":[35],"however,":[36],"not":[38],"been":[39],"evaluated":[40],"under":[41],"normal":[42],"field":[43],"conditions.":[44],"We":[45],"examined":[46],"distribution":[47],"2":[51],"M":[52],"KCl\u2010extractable":[53],"in":[55,93,103,165,222,235],"0\u2010":[56,95],"15\u2010,":[58],"15\u2010":[59,148],"30\u2010,":[61],"30\u2010":[63],"45\u2010cm":[65,97],"layers":[66],"a":[68,129],"submerged":[69],"Alfisol":[70],"during":[71],"three":[72,236],"successive":[73],"crop":[74,123],"seasons,":[75,155],"as":[76],"influenced":[77],"depth":[80,130,249],"tillage":[82,127,156,184,193,233,254],"imposed":[83],"outset":[86],"experiment.":[89],"Mineral":[90],"profile":[98,225],"uptake":[102,173],"first":[105],"season":[106],"were":[107,194],"significantly":[108],"higher":[109,114,122],"(20\u201325":[110],"kg":[111,119,178],"ha":[112,120,179],"\u22121":[113,121,180],"mineral":[115,163],"16\u201318":[118],"uptake)":[125],"with":[126,183],"40":[132,158],"than":[134],"or":[137],"25":[138],"cm,":[139],"increased":[141,170],"originating":[144],"largely":[145],"30\u2010cm":[150],"layer.":[151],"In":[152],"two":[153],"following":[154],"gave":[160],"highest":[162],"subsoil":[167,209],"layers,":[168],"12":[175],"14":[177],",":[181],"compared":[182],"cm.":[187],"The":[188],"beneficial":[189],"effects":[190],"deep":[192],"attributed":[195],"elimination":[198],"mechanical":[200],"impedence":[201],"root":[203],"proliferation,":[204],"lower":[206],"susceptibility":[207],"various":[212],"loss":[213],"mechanisms.":[214],"Initial":[215],"final":[217],"analyses":[218],"Kjeldahl":[220],"indicated":[226],"no":[227],"adverse":[228],"effect":[229],"practicing":[231],"40\u2010cm\u2010deep":[232],"once":[234],"seasons":[237],"on":[238],"fertility.":[241],"Further":[242],"study":[243],"is":[244],"needed":[245],"determine":[247],"optimum":[248],"frequency":[251],"primary":[253],"for":[255],"different":[256],"types":[258],"enhance":[260],"efficiency.":[263]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}