{"_buckets": {"deposit": "fc7c0198-67a1-4194-aeb9-49da3fd24484"}, "_deposit": {"id": "2003240", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2003240"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02003240", "sets": ["1642837910985", "1642838407312"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "\u719f\u7551\u5316\u306b\u3068\u3082\u306a\u3046\u96d1\u8349\u690d\u751f\u306e\u5909\u9077\u306b\u95a2\u3059\u308b\u7814\u7a76 : (1) \u30b5\u30c8\u30a6\u30ad\u30d3\u7551\u306e\u9077\u79fb\u7cfb\u5217\u8abf\u67fb\u306b\u3088\u308b\u9077\u79fb\u904e\u7a0b\u306e\u63a8\u5b9a(\u8fb2\u5b66\u90e8\u9644\u5c5e\u8fb2\u5834)", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Studies on the shift in weed vegetation in the maturation process of fields : I. Estimation of the shift process in various stages of sugar cane fields (Agricultural Experiment Station)", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u77f3\u5dba, \u884c\u7537", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "\u9ad8\u6c5f\u6d32, \u8ce2\u6587", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "\u7530\u76db, \u6b63\u96c4", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Ishimine, Yukio", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Takaesu, Yoshifumi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tamori, Masao", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186626617": 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xrarr;\u4f11\u8015\u7551\u0026xrarr;\u539f\u91ce\u3002", "subitem_description_type": "Other"}, {"subitem_description": "In the present study, the authors had investigated the fields of the University of the Ryukyus and its adjacent fields, where we used to elucidate the changes in weed vegetation in the process of maturation of the fields where sugar cane has grown by monoculture. These fields were divided into seven stages taking the time and cultivative factors into account; clearing, newly planted immature, ratooned immature, newly planted mature, ratooned mature, fallow, and uncultivated stages. Weed communities found in each stage were investigated as to their flouristic composition and life-form spectrum. 1. The species in the weed communities investigated were parted in two groups, one is epistasis which grew in most fields, the other is gypostasis which grew in certain fields. The species in epistasis were suggested importance in the sugar cane fields. 2. As maturing, the gypostasis groups have changed from annual cultivated weed to perenial cultivated weed, finally to uncultivated weed. Those groups were divided further into four subgroups of cultivated fields and one subgroup of uncultivated fields. 3. The naturalized weeds grew in open space of newly planted fields. It was showed the highest percentage that the nuturalizer had brought from Central and South America. Most of those nuturalized from the New Continent after the World War II. 4. The annual weed(Th) showed about 50% in the dormancy form of newly planted fields, but it has decreased as change from ratooned to fallow and finally to uncultivated fields, while woody plants(M, N) has increased. The geophyte(G) has accounted for about 20% in every fields. 5. The degree of similarity between one stage and other six stages was high in clearing, ratooned mature and fallow fields, but in newly planted immature and uncultivated fields were low. 6. The tussock(t) or the erect(e) was the highest percentage in every fields in the growth form. Liana form(1) has increased gradually from mature to fallow, finally to uncultivated fields. The percentage of the unit form(R_5) was high in the radicoid form, and bolochory form (D_4) was the same in the disseminule form. 7. When the authors analysed the weed communities imvestigated by a typical structure using the life-form spectrum, the structure changed from Th-e\u30fbt-R_\u003c5.3\u003e-D_\u003c4.1.5\u003e to Th-e\u30fbt-R_\u003c5.4\u003e-D_\u003c4.1.3\u003e, to Th-t\u30fbe-R_\u003c5,3\u003e-D_\u003c4.1.5\u003e, to Th\u30fbN-t\u30fbe-R_\u003c5.3\u003e-D_\u003c4.1.5\u003e and finally to N\u30fbG-e\u30fbt-R_\u003c5.3\u003e-D_\u003c4.1.5\u003e 8. In mature filds, liana and other uncultivated weeds have increased; they are suggesting higher maturation even with poorer management. 9. From the analysis of the community structure by flouristic composition and life-form spectrum, we concluded that the plagiosere can be estimated next succesion; newly planted (clearing\u2192immature\u2192mature)\u2192ratooned (immature\u2192mature)\u2192fallow\u2192uncultivated fields.", "subitem_description_type": "Other"}, {"subitem_description": "\u7d00\u8981\u8ad6\u6587", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "\u7409\u7403\u5927\u5b66\u8fb2\u5b66\u90e8"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "jpn"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/4226"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0370-4246"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250548"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "\u7409\u7403\u5927\u5b66\u8fb2\u5b66\u90e8\u5b66\u8853\u5831\u544a"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1978-12-01", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "25", "bibliographicPageEnd": "694", "bibliographicPageStart": "679"}]}, "item_1617258105262": {"attribute_name": "Resource Type", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_1617265215918": {"attribute_name": "Version Type", "attribute_value_mlt": [{"subitem_1522305645492": "VoR", "subitem_1600292170262": "http://purl.org/coar/version/c_970fb48d4fbd8a85"}]}, "item_1617605131499": {"attribute_name": "File", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "download_preview_message": "", "file_order": 0, "filename": "KJ00000161980.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2003240/files/KJ00000161980.pdf"}, "version_id": "19430772-6b5d-406e-aefc-86c5a5f0464f"}]}, "item_title": "\u719f\u7551\u5316\u306b\u3068\u3082\u306a\u3046\u96d1\u8349\u690d\u751f\u306e\u5909\u9077\u306b\u95a2\u3059\u308b\u7814\u7a76 : (1) \u30b5\u30c8\u30a6\u30ad\u30d3\u7551\u306e\u9077\u79fb\u7cfb\u5217\u8abf\u67fb\u306b\u3088\u308b\u9077\u79fb\u904e\u7a0b\u306e\u63a8\u5b9a(\u8fb2\u5b66\u90e8\u9644\u5c5e\u8fb2\u5834)", "item_type_id": "15", "owner": "1", "path": ["1642837910985", "1642838407312"], "permalink_uri": "http://hdl.handle.net/20.500.12000/4226", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2008-02-14"}, "publish_date": "2008-02-14", "publish_status": "0", "recid": "2003240", "relation": {}, "relation_version_is_last": true, "title": ["\u719f\u7551\u5316\u306b\u3068\u3082\u306a\u3046\u96d1\u8349\u690d\u751f\u306e\u5909\u9077\u306b\u95a2\u3059\u308b\u7814\u7a76 : (1) \u30b5\u30c8\u30a6\u30ad\u30d3\u7551\u306e\u9077\u79fb\u7cfb\u5217\u8abf\u67fb\u306b\u3088\u308b\u9077\u79fb\u904e\u7a0b\u306e\u63a8\u5b9a(\u8fb2\u5b66\u90e8\u9644\u5c5e\u8fb2\u5834)"], "weko_shared_id": -1}