{"id":"https://openalex.org/W2000866674","doi":"https://doi.org/10.1017/s0014479799002033","title":"GROUNDWATER DYNAMICS AND QUALITY UNDER INTENSIVE CROPPING SYSTEMS","display_name":"GROUNDWATER DYNAMICS AND QUALITY UNDER INTENSIVE CROPPING SYSTEMS","publication_year":1999,"publication_date":"1999-04-01","ids":{"openalex":"https://openalex.org/W2000866674","doi":"https://doi.org/10.1017/s0014479799002033","mag":"2000866674"},"language":"en","primary_location":{"id":"doi:10.1017/s0014479799002033","doi":"https://doi.org/10.1017/s0014479799002033","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s0014479799002033","pdf_url":null,"source":{"id":"https://openalex.org/S167675576","display_name":"Experimental Agriculture","issn_l":"0014-4797","issn":["0014-4797","1469-4441"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","jufo-1","norway-1","poland-70","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Experimental Agriculture","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"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/A5040347682","display_name":"R. J. GUMTANG","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I143895431","display_name":"Mariano Marcos State University","ror":"https://ror.org/02bprcs59","country_code":"PH","type":"education","lineage":["https://openalex.org/I143895431"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"R. J. GUMTANG","raw_affiliation_strings":["Mariano Marcos State University, Batac, Ilocos Norte, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Mariano Marcos State University, Batac, Ilocos Norte, Philippines","institution_ids":["https://openalex.org/I143895431"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109294270","display_name":"Mirasol F. Pampolino","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":"M. F. PAMPOLINO","raw_affiliation_strings":["International Rice Research Institute, PO Box 933, 1099 Manila, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"International Rice Research Institute, PO Box 933, 1099 Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089155193","display_name":"To Phuc Tuong","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":"T. P. TUONG","raw_affiliation_strings":["International Rice Research Institute, PO Box 933, 1099 Manila, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"International Rice Research Institute, PO Box 933, 1099 Manila, Philippines","institution_ids":["https://openalex.org/I162210093"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018264668","display_name":"Dionisio S. Bucao","orcid":"https://orcid.org/0000-0002-9175-7601","observed_orcids":["https://orcid.org/0000-0002-9175-7601"]},"institutions":[{"id":"https://openalex.org/I143895431","display_name":"Mariano Marcos State University","ror":"https://ror.org/02bprcs59","country_code":"PH","type":"education","lineage":["https://openalex.org/I143895431"]}],"countries":["PH"],"is_corresponding":false,"raw_author_name":"D. BUCAO","raw_affiliation_strings":["Mariano Marcos State University, Batac, Ilocos Norte, Philippines"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Mariano Marcos State University, Batac, Ilocos Norte, Philippines","institution_ids":["https://openalex.org/I143895431"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":3550,"currency":"USD","value_usd":3550},"apc_paid":null,"fwci":0.9418,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.69050715,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":"35","issue":"2","first_page":"153","last_page":"166"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11311","display_name":"Soil and Water Nutrient Dynamics","score":0.7095000147819519,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11311","display_name":"Soil and Water Nutrient Dynamics","score":0.7095000147819519,"subfield":{"id":"https://openalex.org/subfields/2304","display_name":"Environmental Chemistry"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10398","display_name":"Groundwater and Isotope Geochemistry","score":0.12210000306367874,"subfield":{"id":"https://openalex.org/subfields/1906","display_name":"Geochemistry and Petrology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11634","display_name":"Water Quality and Pollution Assessment","score":0.09780000150203705,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/groundwater-dynamics","display_name":"groundwater dynamics","score":0.8510000109672546},{"id":"https://openalex.org/keywords/groundwater-quality","display_name":"groundwater quality","score":0.9980000257492065},{"id":"https://openalex.org/keywords/nitrate-nitrogen","display_name":"nitrate nitrogen","score":0.8199999928474426},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.8790000081062317},{"id":"https://openalex.org/keywords/intensive-cropping-systems","display_name":"intensive cropping systems","score":0.800000011920929},{"id":"https://openalex.org/keywords/irrigation-water-quality","display_name":"irrigation water quality","score":0.718999981880188},{"id":"https://openalex.org/keywords/drinking-water-quality","display_name":"drinking water quality","score":0.8579999804496765},{"id":"https://openalex.org/keywords/rice-cultivation","display_name":"rice cultivation","score":0.6290000081062317},{"id":"https://openalex.org/keywords/denitrification","display_name":"denitrification","score":0.828000009059906},{"id":"https://openalex.org/keywords/flooded-rice-fields","display_name":"flooded rice fields","score":0.6169999837875366},{"id":"https://openalex.org/keywords/groundwater-level-decline","display_name":"groundwater level decline","score":0.6169999837875366},{"id":"https://openalex.org/keywords/bell-pepper","display_name":"sweet pepper","score":0.5370000004768372},{"id":"https://openalex.org/keywords/chloride","display_name":"chloride","score":0.4480000138282776},{"id":"https://openalex.org/keywords/bicarbonate","display_name":"bicarbonate","score":0.9779999852180481},{"id":"https://openalex.org/keywords/electrical-conductivity","display_name":"electrical conductivity","score":0.7929999828338623}],"concepts":[{"id":"https://openalex.org/C88862950","wikidata":"https://www.wikidata.org/wiki/Q11453","display_name":"Irrigation","level":2,"score":0.712090015411377},{"id":"https://openalex.org/C76177295","wikidata":"https://www.wikidata.org/wiki/Q161598","display_name":"Groundwater","level":2,"score":0.7025826573371887},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.6921811103820801},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6391419172286987},{"id":"https://openalex.org/C2776384668","wikidata":"https://www.wikidata.org/wiki/Q182168","display_name":"Nitrate","level":2,"score":0.5887452960014343},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.525780439376831},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.5129820704460144},{"id":"https://openalex.org/C9777977","wikidata":"https://www.wikidata.org/wiki/Q146575","display_name":"Dry season","level":2,"score":0.5102429389953613},{"id":"https://openalex.org/C13558536","wikidata":"https://www.wikidata.org/wiki/Q785116","display_name":"Cropping","level":3,"score":0.4597158432006836},{"id":"https://openalex.org/C73593433","wikidata":"https://www.wikidata.org/wiki/Q742637","display_name":"Denitrification","level":3,"score":0.4425080418586731},{"id":"https://openalex.org/C537208039","wikidata":"https://www.wikidata.org/wiki/Q627","display_name":"Nitrogen","level":2,"score":0.4349318742752075},{"id":"https://openalex.org/C2776242653","wikidata":"https://www.wikidata.org/wiki/Q22907699","display_name":"Pepper","level":2,"score":0.419497013092041},{"id":"https://openalex.org/C2780797713","wikidata":"https://www.wikidata.org/wiki/Q625376","display_name":"Water quality","level":2,"score":0.413574755191803},{"id":"https://openalex.org/C76886044","wikidata":"https://www.wikidata.org/wiki/Q2883300","display_name":"Hydrology (agriculture)","level":2,"score":0.3924950957298279},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.19897383451461792},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.13950946927070618},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.12369135022163391},{"id":"https://openalex.org/C144027150","wikidata":"https://www.wikidata.org/wiki/Q48803","display_name":"Horticulture","level":1,"score":0.1185762882232666},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1017/s0014479799002033","doi":"https://doi.org/10.1017/s0014479799002033","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s0014479799002033","pdf_url":null,"source":{"id":"https://openalex.org/S167675576","display_name":"Experimental Agriculture","issn_l":"0014-4797","issn":["0014-4797","1469-4441"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","jufo-1","norway-1","poland-70","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Experimental Agriculture","raw_type":"journal-article"},{"id":"pmh:oai:cgspace.cgiar.org:10568/167155","doi":null,"is_oa":false,"landing_page_url":"https://hdl.handle.net/10568/167155","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":"GUMTANG, R. J.; PAMPOLINO, M. F.; TUONG, T. P. and BUCAO, D. 1999. Groundwater dynamics and quality under intensive cropping systems. Ex. Agric., Volume 35 no. 2 p. 153-166","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":1.0,"display_name":"Clean water and sanitation","id":"https://metadata.un.org/sdg/6"},{"score":0.991100013256073,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"},{"score":0.4390000104904175,"display_name":"Life on land","id":"https://metadata.un.org/sdg/15"}],"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/W78476520","https://openalex.org/W2026982969","https://openalex.org/W2056525796","https://openalex.org/W2371576273","https://openalex.org/W3112486540","https://openalex.org/W2907812787","https://openalex.org/W2183533374","https://openalex.org/W2362757254","https://openalex.org/W2426427673","https://openalex.org/W3036497215"],"abstract_inverted_index":{"A":[0],"study":[1],"was":[2,182],"conducted":[3],"from":[4],"October":[5],"1994":[6],"to":[7,10,18,105,184],"March":[8],"1996":[9],"assess":[11],"groundwater":[12,40,77],"dynamics":[13],"and":[14,20,30,51,58,74,87,192],"quality":[15,98],"in":[16,26,55,91,150,163,188],"relation":[17],"landuse":[19],"farm":[21,106],"input":[22,129],"of":[23,142,160,175,196],"nitrogen":[24,127,197],"fertilizer":[25,128,198],"a":[27,70],"highly":[28],"diversified":[29],"intensive":[31],"agricultural":[32,57],"area":[33,146,177],"at":[34],"Magnuang,":[35],"Batac,":[36],"Ilocos":[37],"Norte.":[38],"Monthly":[39],"depths,":[41],"nitrate-nitrogen":[42],"(NO3-N),":[43],"chloride":[44],"(Cl\u2212),":[45],"bicarbonate":[46],"(HCO3\u2212),":[47],"electrical":[48],"conductivity":[49],"(EC)":[50],"pH":[52],"were":[53,102],"determined":[54],"19":[56],"domestic":[59],"wells.":[60,167],"In":[61],"the":[62,95,115,131,143,151,161,166,173,185,189,193],"dry":[63],"season,":[64],"sweet":[65],"pepper":[66],"(Capsicum":[67],"annuum)":[68],"had":[69],"higher":[71],"irrigation":[72,100],"requirement":[73],"caused":[75],"more":[76],"level":[78],"decline":[79],"than":[80],"other":[81,203],"crops.":[82,204],"EC":[83],"(700\u20133000":[84],"\u03bcmho":[85],"cm\u22121)":[86],"HCO3\u2212":[88],"(90\u2013500":[89],"ppm)":[90,122],"all":[92],"wells":[93,110],"exceeded":[94],"FAO":[96],"threshold":[97],"for":[99,123,155,199],"but":[101],"not":[103],"related":[104,183],"management":[107],"practices.":[108],"Eight":[109],"showed":[111],"near":[112],"or":[113],"above":[114],"World":[116],"Health":[117],"Organization":[118],"NO3-N":[119,133,164,170],"limit":[120],"(10":[121],"drinking":[124],"water.":[125],"High":[126],"increased":[130],"mean":[132,169],"(r2":[134],"=":[135],"0.45,":[136],"p":[137],"<":[138,158],"0.002).":[139],"The":[140,168],"percentage":[141,174],"wells'":[144],"service":[145,176],"under":[147,178],"rice":[148,179,200],"cultivation":[149],"wet":[152],"season":[153],"accounted":[154],"84%":[156],"(p":[157],"0.001)":[159],"variation":[162],"among":[165],"declined":[171],"as":[172],"increased.":[180],"This":[181],"denitrification":[186],"process":[187],"flooded":[190],"fields":[191],"lower":[194],"levels":[195],"compared":[201],"with":[202]},"counts_by_year":[{"year":2019,"cited_by_count":1},{"year":2017,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}
