With the increase in scale and the division of labor in the dairy industry in Japan, the use of liquid digestate derived from livestock manure produced in biogas plants as fertilizer has been promoted. It is a challenge to optimize the location, timing, and amount of application of the digestate to pastures. Here, we developed a Web-based system to manage the application of liquid digestate fertilizer to multiple paddocks on the basis of application history. It uses an existing cloud-based system to collect and manage application history data and open satellite imagery data to calculate the Enhanced Vegetation Index of pastures, which is used to evaluate their growth in relation to the amount of digestate applied per year. By comparison with the annual average value in the district, paddocks with excess nutrient application (more digestate application but poorer grass growth) are selected as “caution” areas and are mapped in the Web application. Users can select a paddock and view its history of digestate application and grass growth. Through this system, we aim to encourage information sharing and understanding among farmers, those who manage and apply liquid digestate, and local government officials, with the goal of more efficient use of local resources.
"},{"@language":"ja","@value":"酪農産業の大規模化と分業化に伴い，バイオガスプラントで生じる家畜糞尿由来消化液肥料の集約的な利用が進められてきた．分業化され委託業者が散布を行う場合，液肥の牧草地における利用に関する散布場所や時期，量の情報管理やその適正化が課題となっている．本論文では，これまで十分に活用されていなかった消化液散布履歴を利用した多牧区の散布管理システムを開発した．このシステムでは，オープンデータの人工衛星画像データを利用し牧草の拡張植生指標（Enhanced Vegetation Index；EVI）を調べ，既存クラウド型システムで収集・管理した消化液散布履歴データと統合し利用可能とした．このシステムで年間の牧区ごとの消化液散布量に対する牧草生育量を評価する．さらに，地区平均との比較から，消化液散布量は多いが牧草生育状況が悪い牧区，即ち必要以上に施肥されていると考えられる牧区を選定して注意牧区とし，ウェブアプリケーションのマップ上にアラート画像を表示することで即座に発見できるようにした．また，このアプリケーションでは牧区を選択することで，牧草生育と施肥の履歴のグラフを閲覧できる．本システムを通して，農業従事者，液肥の管理や散布関係者，地域の行政担当者などの間での情報共有と理解を後押しし，より効率的な地域資源の活用を目指すことが可能となる．
"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410856583390904577","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Uchida Yoshitaka"},{"@language":"ja","@value":"内田 義崇"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"北海道大学大学院農学研究院環境生命地球化学研究室"},{"@language":"en","@value":"Research Faculty of Agriculture, Hokkaido University"}]},{"@id":"https://cir.nii.ac.jp/crid/1410856583390904576","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Oka Miyuki"},{"@language":"ja","@value":"岡 碧幸"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"北海道大学大学院農学研究院環境生命地球化学研究室"},{"@language":"en","@value":"Research Faculty of Agriculture, Hokkaido University"}]},{"@id":"https://cir.nii.ac.jp/crid/1410856583390904578","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Ishige Nao"},{"@language":"ja","@value":"石毛 奈央"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"北海道大学大学院農学研究院環境生命地球化学研究室"},{"@language":"en","@value":"Research Faculty of Agriculture, Hokkaido University"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"09169482"},{"@type":"EISSN","@value":"18815219"}],"prism:publicationName":[{"@language":"en","@value":"Agricultural Information Research"},{"@language":"ja","@value":"農業情報研究"},{"@language":"en","@value":"Agricultural Information Research"},{"@language":"en","@value":"Nogyojohokenkyu"},{"@language":"ja","@value":"農業情報研究"}],"dc:publisher":[{"@language":"en","@value":"Japanese Society of Agricultural Informatics"},{"@language":"ja","@value":"農業情報学会"}],"prism:publicationDate":"2022-10-01","prism:volume":"31","prism:number":"3","prism:startingPage":"78","prism:endingPage":"86"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"https://www.jstage.jst.go.jp/article/air/31/3/31_78/_pdf"}],"availableAt":"2022-10-01","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=%E8%8D%89%E5%9C%B0%E6%96%BD%E8%82%A5%E7%AE%A1%E7%90%86","dc:title":"草地施肥管理"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%B6%88%E5%8C%96%E6%B6%B2%E8%82%A5%E6%96%99","dc:title":"消化液肥料"},{"@id":"https://cir.nii.ac.jp/all?q=%E8%A1%9B%E6%98%9F%E7%94%BB%E5%83%8F","dc:title":"衛星画像"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%82%A6%E3%82%A7%E3%83%96%E3%82%A2%E3%83%97%E3%83%AA%E3%82%B1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3","dc:title":"ウェブアプリケーション"},{"@id":"https://cir.nii.ac.jp/all?q=pasture%20management","dc:title":"pasture management"},{"@id":"https://cir.nii.ac.jp/all?q=liquid%20digestate","dc:title":"liquid digestate"},{"@id":"https://cir.nii.ac.jp/all?q=satellite%20image","dc:title":"satellite image"},{"@id":"https://cir.nii.ac.jp/all?q=web%20application","dc:title":"web application"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360016868470956672","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Evaluating the Effectiveness of Using Vegetation Indices Based on Red-Edge Reflectance from Sentinel-2 to Estimate Gross Primary Productivity"}]},{"@id":"https://cir.nii.ac.jp/crid/1360857595576448896","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Farm management information systems: Current situation and future perspectives"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418521092462848","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Overview of the radiometric and biophysical performance of the MODIS vegetation indices"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2009902091"},{"@type":"CROSSREF","@value":"10.3173/air.31.78"},{"@type":"OPENAIRE","@value":"doi_________::55739bf56e896357a360aaaabebfab08"}]}