[{"id":"yamaha-r50","year":"1987","title":{"ja":"R-50：農業無人航空の事業化","en":"R-50: commercialising agricultural unmanned aviation"},"country":"JP","context":{"ja":"ヤマハは複雑な反転ローター方式で重量・費用・操縦性の問題に直面し、単一主ローター方式へ転換した。","en":"Yamaha encountered weight, cost and handling problems with a counter-rotating design and shifted to a single main rotor."},"outcome":{"ja":"1987年にR-50を完成。15kgを搭載した散布実演を行い、12月から20機を限定販売して運用を追跡した。","en":"In 1987, the R-50 demonstrated spraying with a 15 kg payload; a monitored run of 20 aircraft went on sale that December."},"lesson":{"ja":"最初から大量展開せず、機構の単純化と運用観察を組み合わせたんじゃ。","en":"Simplifying the mechanism and monitoring early users supported introduction."},"limitations":{"ja":"製造元の社史に基づく事例。現代の電動マルチローターの性能や許可を示すものではない。","en":"Manufacturer history; not evidence of present-day multirotor performance or approvals."},"sources":[{"title":"Yamaha Motor History — Development of the R-50","url":"https://global.yamaha-motor.com/stories/history/stories/0028.html"}]},{"id":"mg1p-multiple-aircraft","year":"2018","title":{"ja":"複数機制御は製品機能、群知能とは分ける","en":"Multi-aircraft control is not automatically swarm intelligence"},"country":"CN","context":{"ja":"DJIのMG-1Pは、単一送信機による複数機制御を製品機能として説明。2018年11月の取扱説明書も公開している。","en":"DJI documented multi-aircraft control for the MG-1P, with a November 2018 user manual."},"outcome":{"ja":"メーカー資料では最大5機の同時制御を提示している。これは研究構想だけでなく、製品として記載された機能じゃ。","en":"The manufacturer specifies simultaneous control of up to five aircraft: a documented product capability rather than only a research concept."},"lesson":{"ja":"複数の機体を動かすことと、相互状態を使う協調制御・自律的な群知能は区別しよう。","en":"Separate concurrent operation from cooperative control and emergent swarm intelligence."},"limitations":{"ja":"現場の稼働率、安全性、各国の同時運航許可を証明する資料ではない。","en":"Product documentation does not establish field productivity, safety outcomes or permission for concurrent operation."},"sources":[{"title":"DJI — MG-1P","url":"https://www.dji.com/mg-1p"},{"title":"DJI — MG-1P documentation and dates","url":"https://www.dji.com/mg-1p/info"}]},{"id":"pulvedrone-drift","year":"2019–2021","title":{"ja":"ブドウ園の飛散は、ノズルで変わる","en":"Vineyard drift depends on the nozzle"},"country":"FR","context":{"ja":"PULVEDRONEは急傾斜地での試験枠において、ドローン散布と地上機械の飛散を比較した。","en":"PULVEDRONE compared drone and ground-equipment drift within an experimental steep-vineyard framework."},"outcome":{"ja":"公表ポスターではノズルによる大きな差を報告し、試験した低飛散ノズル付きドローンはクローラ型散布機と同程度の飛散指標を示した。","en":"The poster reports large nozzle-dependent differences; the tested drift-reducing drone configuration had a drift index comparable to a crawler sprayer."},"lesson":{"ja":"「ドローンだから低飛散」ではなく、機体・ノズル・飛行条件を一組で評価するんよ。","en":"Evaluate aircraft, nozzle and operating conditions together."},"limitations":{"ja":"試験構成の結果であり、病害防除効果や全機種の同等性、現在の運航許可を示さない。","en":"These configuration-specific results do not prove biological efficacy, universal equivalence or current permission."},"sources":[{"title":"IFV — Pulvérisation par drone en viticulture et dérive aérienne","url":"https://www.vignevin.com/wp-content/uploads/2022/03/PosterPULVEDRONEderive.pdf"}]},{"id":"canola-counts","year":"2023","title":{"ja":"画像を、まき直しの判断材料へ","en":"Turn imagery into reseeding evidence"},"country":"CA","context":{"ja":"サスカチュワン大学の研究は、広い圃場を歩いて数えるカノーラ苗の調査を画像解析で支援した。","en":"University of Saskatchewan research addressed laborious manual counting of early canola seedlings."},"outcome":{"ja":"2023年の大学紹介では、画像から苗数と地表被覆率を農家へ返すモデルを報告し、追加画像で改良を続けていた。","en":"A 2023 university account reports a model returning seedling counts and ground-cover estimates to farmers, with further image training underway."},"lesson":{"ja":"納品物を「きれいな地図」から、まき直しを検討できる数と場所へ変えるんじゃ。","en":"Deliver a quantity that informs a decision, not just attractive imagery."},"limitations":{"ja":"研究段階の報告。再播種判断の正しさ、増収、他作物への適用を独立に実証したものではない。","en":"Research reporting does not independently establish reseeding outcomes, yield gains or transfer to other crops."},"sources":[{"title":"University of Saskatchewan — Drone innovation from family farm roots","url":"https://agbio.usask.ca/news/2023/05/drone-innovation-by-usask-researcher-comes-from-family-farm-roots.php"}]},{"id":"nagano-ground-alternative","year":"2024","title":{"ja":"ドローン直播の後、地上機を選んだ理由","en":"Why a farm tested a ground alternative after drone seeding"},"country":"JP","context":{"ja":"長野のゴトーファームは前年に40アールでドローン直播を行い、省力化と収量確保を報告した。","en":"Nagano’s Goto Farm reported labor-saving and yield benefits from drone direct-seeding on 0.4 hectares the previous year."},"outcome":{"ja":"2024年は3haで田植機の直播アタッチメントを試験。自社の構成では肥料と除草剤を同時に施用できる点を重視した。","en":"In 2024, it tested a transplanter-mounted direct-seeding attachment on three hectares, valuing simultaneous fertilizer and herbicide application."},"lesson":{"ja":"飛行速度だけでなく、工程をまとめられるかで道具を選ぶんよ。","en":"Choose tools by the complete workflow, including combined operations."},"limitations":{"ja":"一農場の機材比較。ドローン全般の限界とはいえず、出芽、水管理、鳥害には懸念が残った。","en":"One farm’s configuration, not a universal drone limitation; emergence, water management and birds remained concerns."},"sources":[{"title":"JA Nagano — 直播を試験 面積拡大を目指す","url":"https://www.iijan.or.jp/topic/20240605-04"}]},{"id":"argentina-vetch","year":"2025","title":{"ja":"立ったトウモロコシの上から、次作をまく","en":"Establish vetch before maize harvest"},"country":"AR","context":{"ja":"マルコス・フアレスの実証は、2025年4月に成熟期のトウモロコシ圃場へドローンでベッチを播種した。","en":"An April 2025 demonstration at Marcos Juárez broadcast vetch into standing mature maize."},"outcome":{"ja":"資料は7.29haでの作業、補給・電池交換、後日の出芽と被覆を記録。目標25kg/haに対し実績31.57kg/haだった。","en":"The report records 7.29 hectares, refilling and battery changes, then emergence and cover. Actual application was 31.57 kg/ha against a 25 kg/ha target."},"lesson":{"ja":"早くまける利点と、実際の吐出量・地上の定着を一緒に測ろう。","en":"Assess timing gains alongside actual distribution and establishment."},"limitations":{"ja":"商業担当者による実証報告で、無作為化した地上機との比較ではない。年は確認できるが、資料内の日付と経過日数には不一致がある。","en":"Commercial demonstration, not a randomized ground-equipment comparison; some dates and elapsed-day labels conflict."},"sources":[{"title":"INTA-hosted demonstration report — Vicia villosa over maize","url":"https://www.argentina.gob.ar/sites/default/files/2025/05/inta_crcordoba_eeamarcosjuarez_bonavia_r_siembra.pdf"}]},{"id":"us-turnaround","year":"2025","title":{"ja":"補給と暑さが、散布能力を制限する","en":"Refills and heat constrain spray capacity"},"country":"US","context":{"ja":"2025年のミシシッピ州立大学記事は、Auburn大学などの圃場評価を紹介した。","en":"A 2025 Mississippi State Extension report describes field evaluations presented by Auburn University and other researchers."},"outcome":{"ja":"Auburnの担当者は、評価中に約5分ごとの液剤補給と電池交換が必要で、夏の現場負担が大きかったと述べた。","en":"The Auburn researcher reported refilling and battery swaps about every five minutes in their work, with substantial summer labor demands."},"lesson":{"ja":"一日の能力は飛行時間だけでなく、着陸後の作業と人の負担で決まるんじゃ。","en":"Measure the ground cycle and workload alongside flight time."},"limitations":{"ja":"特定の評価経験であり、全機種共通の交換間隔ではない。広告上の飛行時間との差も個別に検証する必要がある。","en":"A reported experience, not a universal service interval; advertised endurance needs configuration-specific validation."},"sources":[{"title":"Mississippi State Extension — MSU is studying UAVs’ usefulness","url":"https://www.accessibility.extension.msstate.edu/news/feature-story/2025/msu-studying-uavs-usefulness-ag-settings"}]},{"id":"south-africa-cane","year":"2025","title":{"ja":"糖度測定から、散布・収穫の段取りへ","en":"Connect cane measurements, spraying and harvest"},"country":"ZA","context":{"ja":"2025年公表の研究は、小規模農家の分散圃場で糖度計とPurEstアプリを使い、成熟剤散布の判断を説明した。","en":"A study published in 2025 linked refractometer readings and the PurEst app to ripening decisions on fragmented smallholder fields."},"outcome":{"ja":"16実証でドローン散布を行い、無処理区との比較を図にして農家へ説明。推定回収糖量は増えたが、サトウキビ自体の重量は多くの区で減った。","en":"Sixteen demonstrations used drones and farmer-readable comparisons. Estimated recoverable sugar increased, while cane mass decreased in most trials."},"lesson":{"ja":"作物重量、製品価値、農家への説明を分けて評価するんよ。","en":"Distinguish crop mass, saleable value and understandable advice."},"limitations":{"ja":"広域普及には受託者不足、圃場分散、収穫・工場搬入の調整が障壁。年は論文公表年を示す。","en":"Contractor availability, fragmentation and harvest coordination limit wider adoption. The year denotes publication, not every trial date."},"sources":[{"title":"South African Journal of Agricultural Extension — Smartphone and drone sugarcane quality management","url":"https://www.scielo.org.za/scielo.php?lng=en&nrm=iso&pid=S0301-603X2025000400008&script=sci_arttext"}]},{"id":"taiwan-rural-logistics","year":"2020–2025","title":{"ja":"農産物の往復物流を、段階を分けて検証","en":"Validate two-way rural logistics in stages"},"country":"TW","context":{"ja":"台湾の交通部運輸研究所は2020年から、離島・山間部の輸送を検証。日常物資と農産物の双方向輸送を用途に含めた。","en":"Taiwan’s transport institute began island and mountain logistics validation in 2020, including goods and agricultural produce in both directions."},"outcome":{"ja":"2020〜2022年の技術検証、2023〜2025年の長期現場でのサービス検証を経て、2025年に事業性の検証へ進んだ。","en":"Technical validation in 2020–2022 progressed to extended service trials in 2023–2025 and business-model validation from 2025."},"lesson":{"ja":"飛べる、届け続けられる、採算が合う。この三つを別の到達点として扱うんじゃ。","en":"Treat technical feasibility, sustained service and commercial viability as separate milestones."},"limitations":{"ja":"官庁の進捗報告であり、農産物の輸送量、品質保持、採算の確立はこの資料だけでは確認できない。","en":"The government progress report does not establish produce volumes, quality retention or profitability."},"sources":[{"title":"Taiwan Ministry of Transportation — Rural UAV logistics validation","url":"https://www.motc.gov.tw/ch/app/news_list/view?id=14&module=news&serno=8b4d3285-179b-4de4-aad0-5735078e45c2"}]},{"id":"ipb-indoor-swarm","year":"2026","title":{"ja":"屋内スウォーム：研究と普及実績を分ける","en":"Indoor swarms: distinguish research from deployment"},"country":"ID","context":{"ja":"IPB大学は2026年3月、固定センサーが使えない場所を補う屋内農業向け小型群ドローン研究を紹介した。","en":"In March 2026, IPB University described indoor-farming swarm research intended to back up fixed sensors."},"outcome":{"ja":"研究者は、画像・環境情報の中央解析、機体間通信、位置調整を説明している。","en":"Researchers describe central analysis of imagery and environmental data, inter-drone communications and position coordination."},"lesson":{"ja":"前のMG-1Pの複数機制御事例と比べ、協調の中身と検証段階を明示しよう。","en":"Specify both the coordination mechanism and maturity level when comparing this with product multi-aircraft control."},"limitations":{"ja":"大学の研究紹介で、屋外散布の商用群運航、安全認証、収益改善を実証したものではない。","en":"A research account, not proof of commercial outdoor spraying swarms, certification or improved profitability."},"sources":[{"title":"IPB University — Swarm drones for AI-based indoor farming","url":"https://www.ipb.ac.id/news/index/2026/03/peneliti-ipb-university-kembangkan-swarm-drone-untuk-indoor-farming-berbasis-ai/"}]}]