{"created":"2022-02-22T02:44:36.736400+00:00","id":2015414,"links":{},"metadata":{"_buckets":{"deposit":"62322282-c312-4df3-a3b1-961d87d2eb49"},"_deposit":{"id":"2015414","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2015414"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02015414","sets":["1642838163960:1642838308020:1642838308479:1642838325522","1642838403551:1642838412624"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"Critocal Period for Weed Management in Sugarcane Field.","subitem_1551255648112":"en"},{"subitem_1551255647225":"サトウキビ栽培における限界除草期間","subitem_1551255648112":"ja"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Matin, M.A.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hossain, M.A.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Oya, Kazuhiro","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hossain, A.H.M.D.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Rahman, M.K.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Uddin, S.M.M.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"大屋, 一弘","creatorNameLang":"ja"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_1522650717957":"ja","subitem_1522651041219":"沖縄農業研究会"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"An experiment was carried out at Muladully farm of North Bengal Sugar mills, Bangladesh during 1990—1991 crop season to determine the critical period for weed management in sugarcane. The experiment consisted of nine treatments with three replications and fitted in a randomized complete block design. Variety Isd. 16 was used as a test crop. Nine different weed infestation period was included in this experiment to meet up the needs of the study. Yield and various yield contributing parameters and economic impact of weeding were investigated under different treatments. The lowest number of tillers and millable stalks were obtained from the unweeded control plots (T_1) while the highest tillers and millable cane stalks were from the T_9 treatment where the plots were kept weed free up to 135 DAP. Similar results were also obtained in case of yield per plot. Further, prolonged weed infestation (T_5) during early growth stage of cane reduced tillering, millable stalks production and yield of cane. The treatment T_2 (keeping the land weed free from 45 to 135 DAP) was at par with the T_9 treatment in respect of tillering, millable canes and yield (ton/ha). The highest yield in the T_9 treatment was due to weed free environment in the plot coupled with maximum economic shoot. The percent yield increase due to weeding over control was directly related to the period of infestation. A weed free environment in cane field up to 135 DAP increased the cane yield maximum by 65 percent. Also keeping the land weed free during the early growth stage of cane helped increase recoverable sucrose (%). Economic analysis also revealed that additional yield over control was highest in the T_9 treat-ment. Additional income and net income due to weeding was higher in the T_9 treatment. Also the T_2 treatment gave satisfactory economic return compared with the control. From the results, it is clear that keeping the land weed free from 45 to 135 DAP gave significantly higher yield and maximum economic benefit over the non-weeded check or other treatments. So the critical period for weed management in sugarcane field was found between 45 to 135 DAP for obtaining maximum economic return.","subitem_description_type":"Other"},{"subitem_description":"この実験は、サトウキビ（a収量）に対する限界除草期間を決定するために1990～91年、バングラデシュ国、ノース、ベンガル製糖工場、ムラドリー農場で実施した。供試品種としてIsd.16を使い、9処理区を3反復で、配置は乱塊法で実施した。すなわち、9種類の異なった除草処理期間（infestation period）を設置し、それぞれに対する収量、収穫構成要素及び除草処理の経済効果を検討した。その結果、除草をしなかった無処理区（：T_1）で分けつ茎数及び原材料茎数が最も少なくなり、植付けから135日間除草した区（：T_9）が最も多くなった。収量においても同様になった。逆に、植付けから135日間放置した区（：T_5）では分けつ茎数、原材料茎数、及び原材料茎収量は減少した。除草処理期間が45から135日間での処理区（：T_2）は分けつ茎数、原材料茎数及び収量においてT_9と殆ど同じであった。T_9処理区における最高収量は、除草による有効茎の増加（maximum economic shoot = millable shoot）によるものである。無処理に対する増収割合は、除草期間と直接的に関係した。135日除草処理区（：T_9）は、無処理区より収量で65％増加し、可製糖率（recoverable sucrose％）も増加した。経済効果もまた増収を反映し、T_9で優った。すなわち、T_9では、追加収入（additional income）及び純収量が最も高くなった。また、T_2も無処理区（T_1）に比較して満足すべき収益（economic return）が見られた。そして、無処理及び他の処理区に比較し、45～135 D.A.P処理区（：T_2）は著しい増量が得られ、最高経済効果（maximum economic benefit）が得られた。このことから、サトウキビ栽培における最高経済回収を行なうための限界除草期間は、45～135日であることがわかった。","subitem_description_type":"Other"},{"subitem_description":"論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"沖縄農業研究会"},{"subitem_1522300295150":"en","subitem_1522300316516":"Okinawa Agriculture Research Society"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"eng"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"1344-1477"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN00083297"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"沖縄農業"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1993-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"27","bibliographicPageStart":"22","bibliographicVolumeNumber":"28"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","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","filename":"419.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2015414/files/419.pdf"},"version_id":"64723ed8-fcbc-4688-b598-706ce752dd7c"}]},"item_title":"Critocal Period for Weed Management in Sugarcane Field.","item_type_id":"15","owner":"1","path":["1642838325522","1642838412624"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-01-29"},"publish_date":"2009-01-29","publish_status":"0","recid":"2015414","relation_version_is_last":true,"title":["Critocal Period for Weed Management in Sugarcane Field."],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T07:36:56.491272+00:00"}