{"created":"2023-05-15T13:38:02.768433+00:00","id":1809,"links":{},"metadata":{"_buckets":{"deposit":"2c3df5c0-e182-4353-bcf1-c2665fd65919"},"_deposit":{"created_by":12,"id":"1809","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"1809"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:00001809","sets":["87:623:622:129:275"]},"author_link":["131"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-03-25","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"74","bibliographicPageStart":"1","bibliographicVolumeNumber":"65","bibliographic_titles":[{"bibliographic_title":"九州沖縄農業研究センター報告"},{"bibliographic_title":"Bulletin of the NARO Kyushu Okinawa Agricultural Research Center","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The first forage sugarcane variety in Japan was developed and registered as \"KRFo93-1\" and was bred in order to improve roughage productivity on the Nansei Islands. However, its optimal cultivation system has not been established. In this study, we first try to develop a cultivation system for growing KRFo93-1 in the Kumage region, its recommended cultivation area. Generally, the cultivation period for a single sugarcane crop spans one year, if the crop is grown for use in sugar-related manufacturing. However, KRFo93-1 is capable of producing more than one harvest per year due to its vigorous growth. We examined the possibility of increasing the number of crop cycles to two harvests per year. The annual dry matter yield of KRFo93-1 when producing two harvests per year was as high as that produced by one harvest per year. In addition, harvesting was improved in the two-harvests-per-year model because crops did not lodge but instead stood erect. Our results suggest that the production of two harvests per year is a better crop cycle for KRFo93-1 than one harvest per year. The optimal harvest time for the two-harvests-per-year model of KRFo93-1 cultivation was also studied. Growth and yield were examined in plots harvested July-May, August-May, September-May, and October-May, over the course of three years. The highest annual dry matter yield of the three-year average was both in August-May and September-May harvest plots. During the second crop cycle of the October-May plot, weeds grew vigorously because the canopy of the crop was not closed. However, in the July-May and August-May plots, the crop itself controlled weed growth because the canopy closed before the onset of winter. As mentioned above, this indicates that August-May is the optimal harvest time. The optimal harvest time under the two-harvests-per-year model may change somewhat in response to the meteorological conditions of each region. Thus, we attempted to construct a model for predicting dry matter yield. The relationship of growth degree days (X) whose base temperature was 14.3℃ and dry matter yield (Y) were analyzed. The dry matter yield was expressed using the regression curve Y = 6.21[0.0127 ^exp(-0.00126X)] and R^2 was 0.768. This regression curve is expected to aid in determining the optimal harvest time of KRFo93-1 in the Kumage region. Forage sugarcane cultivation techniques based on a model of two harvests per year were studied. The early growth of the plant cane is slow, which is a commonly known and discussed problem. Thus, we examined whether dense planting is an effective method of improving the early growth rate of plant cane. The early growth and yield of KRFo93-1 were examined in control plots, planted at 1.5 times the control density and twice the control density, for two years. Early growth and yield were both significantly higher in the densely planted plots than in the control. Thus, a dense planting of 1.5 to 2 times the control density is recommended to improve the growth of cane plants. We examined a cultivation technique of ratoon crop called stubble shaving. The growth and yield of the plot with stubble shaving (control) and those of the high-level cutting plots without stubble shaving (HC) were compared through the growth of the sixth ratoon crop. The sum of the dry matter yields of six ratoon crops was signi\u001fcantly higher in HC than in the control. The increase in the dry matter yield of HC was due to the enhanced stem growth, as average single stem dry weights in HC plots exceeded those in the control plot. Thus, cultivation management without stubble shaving is recommended for KRFo93-1 cultivation. Fertilizer management was also studied. The application of the currently accepted quantity of K_2O fertilizer should be maintained so as not to decrease the yield of multi-ratooning crops. The current N application quantity is appropriate, while P_2O_5 application was superfluous in the control. Since the soil exchangeable K, Ca, and Mg contents decreased even in the control plot, additional fertilizer such as manure and lime should be applied in order to maintain yield levels in multi-ratooning crops. Additionally, we attempted to breed a new variety of forage sugarcane to complement KRFo93-1. Smut disease is caused by the fungus Ustilago scitaminea Syd. and is of concern to sugarcane cultivation. Since the existing smut resistance of KRFo93-1 is insufficient, its adoption has been limited to the Kumage region where smut disease does not currently exist. Thus, a new smut-resistant variety is needed if the use of forage sugarcane is to be widely adopted in the Amami region and Okinawa Prefecture. Cross-breeding was conducted in order to develop a new variety with both high smut tolerance and high yield productivity. The smut resistant variety NiF8 was used as the seed parent, and the high-yield breeding line KRSp93-26 was used as the pollen parent. Through our experiments, we developed a new variety, registered as \"Shimanoushie,\" with both high smut resistance and high yield productivity. This variety enables cultivating forage sugarcane in the Amami region and Okinawa Prefecture. As described above, we succeeded in developing a cultivation system of forage sugarcane on the Nansei Islands. Moreover, we bred a new, smut-resistant variety. These results will be of significant benefit to the livestock industry on the Nansei Islands.\n","subitem_description_type":"Abstract"},{"subitem_description":"南西諸島における粗飼料の増産に向けて, 基幹牧草ローズグラスの収量を上回る飼料用サトウキビ品種「KRFo93-1」が育成された。しかしながら, 栽培体系が確立されていないため普及は円滑に進んでいなかった。そこで, 熊毛地域において飼料用サトウキビの栽培体系の確立に取り組んだ。サトウキビは通常, 年1回収穫で栽培されるが, 「KRFo93-1」を年1回収穫で栽培すると長大化して倒伏が著しく, これが栽培上の課題となっていた。そこで, 多収と高い作業性を両立する新しい収穫体系として, 1作の栽培期間を短くした年2回体系を開発した。また, 年2回の収穫時期を8月と5月に設定することで, 雑草抑制にも繋がることを明らかにした。さらに, 有効温度を14.3℃とする有効積算温度に基づいた乾物収量モデルを構築し, 最適な収穫時期を汎用的に検討可能とした。飼料用サトウキビは年2回収穫体系で栽培するが, その他の個別の栽培技術の開発も行った。栽植密度は製糖用品種の基準の1.5～2倍の密植にすることで, 新植時の初期生育改善と乾物収量増加に繋がることを明らかにした。また, 製糖用品種の栽培では必須とされる株出し時の管理作業の株揃えは, 飼料用サトウキビでは不要であり, 省力的な株出し管理の導入が可能であることを示した。さらに, 施肥量は製糖用品種の1作に準じるものの, カリウム, マグネシウム, カルシウムでは吸収量が施肥量を上回るため, 多回株出し栽培で多収を維持するためには, これら要素の追加施用が必要であることを明らかにした。「KRFo93-1」は黒穂病抵抗性が十分でないため, 奄美・沖縄地域で栽培を推奨できる飼料用サトウキビ品種がなかった。そこで, 黒穂病に強く, かつ多収となる品種の開発に取り組み, 製糖用品種「NiF8」と種間雑種系統「KRSp93-26」の交雑から, 新品種「しまのうしえ」を育成した。「しまのうしえ」は, 「NiF8」と同程度の強い黒穂病抵抗性を有し, また, 「KRFo93-1」と同程度の高い収量性を示す。この品種の育成により, 奄美・沖縄地域でも飼料用サトウキビの栽培が可能となった。以上, 本研究の結果, 南西諸島における飼料用サトウキビの栽培体系を確立するとともに, 黒穂病抵抗性の品種の育成にも至り, 安定的な飼料確保の基盤を構築することができた。\n","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/00001760","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立研究開発法人 農業・食品産業技術総合研究機構 九州沖縄農業研究センター"}]},"item_10002_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.24514/00001760","subitem_relation_type_select":"DOI"}}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1346-9177","subitem_source_identifier_type":"ISSN"}]},"item_10002_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"境垣内, 岳雄"},{"creatorName":"サカイガイチ, タケオ","creatorNameLang":"ja-Kana"},{"creatorName":"SAKAIGAICHI, Takeo","creatorNameLang":"en"}],"nameIdentifiers":[{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-03-19"}],"displaytype":"detail","filename":"konarc_report_No65p1-74p.pdf","filesize":[{"value":"4.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"konarc_report_No65p1-74p.pdf","url":"https://repository.naro.go.jp/record/1809/files/konarc_report_No65p1-74p.pdf"},"version_id":"706c993f-3d19-4333-a091-4a4c804db7a0"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"飼料用サトウキビ","subitem_subject_scheme":"Other"},{"subitem_subject":"栽培体系","subitem_subject_scheme":"Other"},{"subitem_subject":"年2回収穫","subitem_subject_scheme":"Other"},{"subitem_subject":"品種育成","subitem_subject_scheme":"Other"},{"subitem_subject":"forage sugarcane","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cultivation system","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"two harvests per year","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"breeding","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"飼料用サトウキビの栽培体系の開発および品種育成に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"飼料用サトウキビの栽培体系の開発および品種育成に関する研究"},{"subitem_title":"Studies on Cultivation System and Breeding of Forage Sugarcane (Saccharum spp. hybrid)","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"12","path":["275"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-03-22"},"publish_date":"2019-03-22","publish_status":"0","recid":"1809","relation_version_is_last":true,"title":["飼料用サトウキビの栽培体系の開発および品種育成に関する研究"],"weko_creator_id":"12","weko_shared_id":12},"updated":"2023-05-15T16:14:37.069078+00:00"}