{"id":"https://openalex.org/W2046904588","doi":"https://doi.org/10.1016/s1881-8366(10)80002-3","title":"Investigation of Temporal and Spatial Variability for Green Tea Growth Using Precision Agriculture Technology","display_name":"Investigation of Temporal and Spatial Variability for Green Tea Growth Using Precision Agriculture Technology","publication_year":2010,"publication_date":"2010-01-01","ids":{"openalex":"https://openalex.org/W2046904588","doi":"https://doi.org/10.1016/s1881-8366(10)80002-3","mag":"2046904588"},"language":"en","primary_location":{"id":"doi:10.1016/s1881-8366(10)80002-3","doi":"https://doi.org/10.1016/s1881-8366(10)80002-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s1881-8366(10)80002-3","pdf_url":"https://www.jstage.jst.go.jp/article/eaef/3/4/3_4_113/_pdf","source":{"id":"https://openalex.org/S2764895854","display_name":"Engineering in Agriculture Environment and Food","issn_l":"1881-8366","issn":["1881-8366"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Engineering in Agriculture, Environment and Food","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.jstage.jst.go.jp/article/eaef/3/4/3_4_113/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5016608559","display_name":"Chanseok Ryu","orcid":"https://orcid.org/0000-0002-5451-431X","observed_orcids":["https://orcid.org/0000-0002-5451-431X"]},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Chanseok Ryu","raw_affiliation_strings":["Graduate School of Agriculture Kyoto University","Graduate school of Agriculture, Kyoto Univ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Agriculture Kyoto University","institution_ids":["https://openalex.org/I22299242"]},{"raw_affiliation_string":"Graduate school of Agriculture, Kyoto Univ","institution_ids":["https://openalex.org/I22299242"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067902776","display_name":"Masahiko Suguri","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masahiko Suguri","raw_affiliation_strings":["Graduate School of Agriculture Kyoto University","Graduate school of Agriculture, Kyoto Univ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Agriculture Kyoto University","institution_ids":["https://openalex.org/I22299242"]},{"raw_affiliation_string":"Graduate school of Agriculture, Kyoto Univ","institution_ids":["https://openalex.org/I22299242"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5112210008","display_name":"Mikio Umeda","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mikio Umeda","raw_affiliation_strings":["Kyoto University","Kyoto univ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Kyoto University","institution_ids":["https://openalex.org/I22299242"]},{"raw_affiliation_string":"Kyoto univ","institution_ids":["https://openalex.org/I22299242"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I22299242"],"apc_list":{"value":3000,"currency":"USD","value_usd":3000},"apc_paid":{"value":3000,"currency":"USD","value_usd":3000},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"3","issue":"4","first_page":"113","last_page":"118"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9560999870300293,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.9560999870300293,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T10616","display_name":"Smart Agriculture and AI","score":0.026900000870227814,"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/T14365","display_name":"Leaf Properties and Growth Measurement","score":0.008999999612569809,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/green-tea","display_name":"green tea","score":0.9679999947547913},{"id":"https://openalex.org/keywords/camellia-sinensis","display_name":"Camellia sinensis","score":0.8420000076293945},{"id":"https://openalex.org/keywords/new-shoot-growth","display_name":"new shoot growth","score":0.8140000104904175},{"id":"https://openalex.org/keywords/spatial-variability","display_name":"spatial variability","score":0.8980000019073486},{"id":"https://openalex.org/keywords/temporal-variation","display_name":"temporal variation","score":0.9980000257492065},{"id":"https://openalex.org/keywords/normalized-difference-vegetation-index","display_name":"NDVI","score":0.8220000267028809},{"id":"https://openalex.org/keywords/precision-agriculture","display_name":"precision agriculture","score":0.7009999752044678},{"id":"https://openalex.org/keywords/nitrogen-fertilization","display_name":"nitrogen fertilization","score":0.7979999780654907},{"id":"https://openalex.org/keywords/shading","display_name":"shading","score":0.8740000128746033},{"id":"https://openalex.org/keywords/shoot-dry-mass","display_name":"shoot dry mass","score":0.7850000262260437},{"id":"https://openalex.org/keywords/nitrogen-content","display_name":"nitrogen content","score":0.9070000052452087},{"id":"https://openalex.org/keywords/tea-cultivars","display_name":"tea cultivars","score":0.49300000071525574},{"id":"https://openalex.org/keywords/crop-growth-monitoring","display_name":"crop growth monitoring","score":0.33500000834465027}],"concepts":[{"id":"https://openalex.org/C21410773","wikidata":"https://www.wikidata.org/wiki/Q220869","display_name":"Shoot","level":2,"score":0.857312798500061},{"id":"https://openalex.org/C1549246","wikidata":"https://www.wikidata.org/wiki/Q718775","display_name":"Normalized Difference Vegetation Index","level":3,"score":0.7917293906211853},{"id":"https://openalex.org/C94747663","wikidata":"https://www.wikidata.org/wiki/Q7574086","display_name":"Spatial variability","level":2,"score":0.627577006816864},{"id":"https://openalex.org/C2780560099","wikidata":"https://www.wikidata.org/wiki/Q83323","display_name":"Fertilizer","level":2,"score":0.5898605585098267},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5325272083282471},{"id":"https://openalex.org/C177515723","wikidata":"https://www.wikidata.org/wiki/Q1191981","display_name":"Shading","level":2,"score":0.5117220878601074},{"id":"https://openalex.org/C2776133958","wikidata":"https://www.wikidata.org/wiki/Q7918366","display_name":"Vegetation (pathology)","level":2,"score":0.50813889503479},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.4774392247200012},{"id":"https://openalex.org/C120217122","wikidata":"https://www.wikidata.org/wiki/Q740083","display_name":"Precision agriculture","level":3,"score":0.4344910681247711},{"id":"https://openalex.org/C118518473","wikidata":"https://www.wikidata.org/wiki/Q11451","display_name":"Agriculture","level":2,"score":0.38403084874153137},{"id":"https://openalex.org/C6557445","wikidata":"https://www.wikidata.org/wiki/Q173113","display_name":"Agronomy","level":1,"score":0.37233781814575195},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3556140661239624},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.24580299854278564},{"id":"https://openalex.org/C25989453","wikidata":"https://www.wikidata.org/wiki/Q446746","display_name":"Leaf area index","level":2,"score":0.23240232467651367},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.1937093436717987},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.13829487562179565},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.07072344422340393},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s1881-8366(10)80002-3","doi":"https://doi.org/10.1016/s1881-8366(10)80002-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s1881-8366(10)80002-3","pdf_url":"https://www.jstage.jst.go.jp/article/eaef/3/4/3_4_113/_pdf","source":{"id":"https://openalex.org/S2764895854","display_name":"Engineering in Agriculture Environment and Food","issn_l":"1881-8366","issn":["1881-8366"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Engineering in Agriculture, Environment and Food","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1016/s1881-8366(10)80002-3","doi":"https://doi.org/10.1016/s1881-8366(10)80002-3","is_oa":true,"landing_page_url":"https://doi.org/10.1016/s1881-8366(10)80002-3","pdf_url":"https://www.jstage.jst.go.jp/article/eaef/3/4/3_4_113/_pdf","source":{"id":"https://openalex.org/S2764895854","display_name":"Engineering in Agriculture Environment and Food","issn_l":"1881-8366","issn":["1881-8366"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","poland-40","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Engineering in Agriculture, Environment and Food","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Zero hunger","score":1.0,"id":"https://metadata.un.org/sdg/2"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2046904588.pdf","grobid_xml":"https://content.openalex.org/works/W2046904588.grobid-xml"},"referenced_works_count":9,"referenced_works":["https://openalex.org/W37846804","https://openalex.org/W277784203","https://openalex.org/W2045484550","https://openalex.org/W2057959077","https://openalex.org/W2062369503","https://openalex.org/W2062811827","https://openalex.org/W2116745487","https://openalex.org/W2240263403","https://openalex.org/W2523197400"],"related_works":["https://openalex.org/W1489705311","https://openalex.org/W3186943078","https://openalex.org/W811118281","https://openalex.org/W2060149425","https://openalex.org/W1993945131","https://openalex.org/W3008994314","https://openalex.org/W7222549034","https://openalex.org/W7066063019","https://openalex.org/W2385675194","https://openalex.org/W2997037561"],"abstract_inverted_index":{"Spatial":[0],"and":[1,12,26,56,73,96,117],"temporal":[2,74],"variability":[3,28,75,85],"of":[4,8,29,76,93],"new":[5,30,48,64],"shoots":[6,31,49],"(number":[7],"shoots,":[9],"dry":[10],"mass":[11],"nitrogen":[13,57],"concentration)":[14],"were":[15,32,45,61,102],"investigated":[16],"under":[17],"several":[18,90],"conditions":[19],"using":[20,35],"precision":[21],"agriculture":[22],"technology.":[23],"The":[24,108],"growth":[25,50,77],"spatial":[27,84],"both":[33],"determined":[34],"the":[36,105],"normalized":[37],"difference":[38],"vegetation":[39],"index":[40],"(NDVI).":[41],"At":[42],"harvest,":[43],"there":[44],"differences":[46,62],"in":[47,63],"depending":[51,88],"on":[52,89],"variety,":[53],"severe":[54],"shading,":[55],"fertilizer":[58],"type.":[59],"There":[60],"shoot":[65],"for":[66,71,115,127],"\u201cTen-cya\u201d":[67],"compared":[68,82],"to":[69,83],"that":[70],"\u201cSen-cya,\u201d":[72],"had":[78],"a":[79],"different":[80],"tendency":[81],"at":[86],"harvest":[87],"conditions.":[91],"Coefficients":[92],"determination":[94],"(R2)":[95],"root":[97],"mean":[98],"square":[99],"error":[100],"(RMSE)":[101],"established":[103],"by":[104],"NDVI":[106],"model.":[107],"accuracy":[109],"was":[110],"R2\u22650.826":[111],"with":[112,119],"RMSE\u226415.0":[113],"g/m2":[114,121],"\u201cSen-cya\u201d":[116],"R2\u22650.877":[118],"RMSE\u226413.6":[120],"(vegetation":[122],"coverage":[123],"ratio":[124],"\u2264":[125],"100%)":[126],"\u201cTen-cya\u201d.":[128]},"counts_by_year":[],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}
