{"created":"2023-10-16T06:46:50.661283+00:00","id":2000013,"links":{},"metadata":{"_buckets":{"deposit":"5b67da7b-a9ce-413b-a947-3dbd2aa0bb31"},"_deposit":{"created_by":18,"id":"2000013","owner":"18","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"2000013"},"status":"published"},"_oai":{"id":"oai:jicari.repo.nii.ac.jp:02000013","sets":["674"]},"author_link":[],"control_number":"2000013","item_10002_biblio_info_7":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueNumber":"Discussion Paper  No.14","bibliographicNumberOfPages":"36","bibliographicPageEnd":"34","bibliographicPageStart":"1","bibliographicVolumeNumber":"Discussion Paper"}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The Green Revolution in Asia is often considered the “fertilizer and seed revolution.” However, it has recently become recognized that Green Revolution is not merely a fertilizer and seed revolution but that good agricultural practices for better water and crop management are also crucial. If so, agricultural training instead of providing fertilizer and seeds for free should effectively increase agricultural productivity in sub-Saharan Africa. This study conducts a randomized control trial to compare the efficacy of agricultural training and the free distribution of a small amount of fertilizer and seeds of a modern variety of rice. Our results show that trained farmers adopted modern varieties and improved agronomic practices more often and achieved higher paddy yield, income, and profit per hectare than the control group. By contrast, neither the paddy yield nor the income of those who received free inputs increased, although they were more likely to adopt modern variety than a control group. The results suggest that proper knowledge transfer is crucial for enhancing agricultural productivity. We also observed that control group farmers learned about new technologies from trained farmers while they did not do so from free-input receiving farmers, suggesting possible knowledge spillover from trained farmers but not from free-input receivers.","subitem_description_type":"Abstract"},{"subitem_description":"アジアにおける緑の革命は「近代品種と化学肥料の革命」と考えられてきた。しかし、近年アフリカで緑の革命を起こすためには、近代品種と化学肥料に加えて、水及び作物管理のための栽培技術の普及が重要であることが認識されつつある。そのような状況においては、農業技術研修が農業生産性の向上にとって重要な政策となるだろう。本研究はランダム化比較実験を用いてコメの農業技術研修と少量の化学肥料と種子の無料配布の効果を検証する。その結果、技術研修を受けた農家は近代品種及び栽培技術をより多く採用し、籾米の単位面積当たりの収量、所得、利潤が増加した。それに対して、肥料と種子の無料配布を受けた農家は、近代品種の採用を増やすものの、その他の技術や生産性は向上しなかった。このことは技術研修が技術採用と生産性の向上にとって重要であることを示唆している。また技術研修を受けた農家は介入を受けなかった農家に技術の情報を伝えているが、無料配布を受けた農家からは情報の伝達は起こらなかったという結果も得られた。","subitem_description_type":"Abstract"}]},"item_10002_identifier_registration":{"attribute_name":"identifier_registration","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18884/0002000013","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"JICA Ogata Sadako Research Institute/緒方貞子平和開発研究所"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yuko,Nakano and Eustadius Francis Magezi"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-08-31"}],"filename":"Discussion_Paper_No.14.pdf","filesize":[{"value":"714 KB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://jicari.repo.nii.ac.jp/record/2000013/files/Discussion_Paper_No.14.pdf"},"version_id":"f73927cf-68ba-4dde-a16f-980dc1dcb6f5"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Technology adoption, Agricultural productivity, Agricultural training, Free-input distribution, Sub-Saharan Africa, Tanzania"},{"subitem_subject":"技術採用、農業生産性、農業技術研修、肥料と種子の無料配布、サブサハラ・アフリカ、タンザニア"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"item_resource_type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Is the Green Revolution in Sub-Saharan Africa a Fertilizer and Seed Revolution?  The Impact of Training and Free Distribution of Fertilizer and Seeds on  Agricultural Productivity","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Is the Green Revolution in Sub-Saharan Africa a Fertilizer and Seed Revolution?  The Impact of Training and Free Distribution of Fertilizer and Seeds on  Agricultural Productivity","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"18","path":["674","759"],"pubdate":{"attribute_name":"公開日","attribute_value":"2023-08-01"},"publish_date":"2023-08-01","publish_status":"0","recid":"2000013","relation_version_is_last":true,"title":["Is the Green Revolution in Sub-Saharan Africa a Fertilizer and Seed Revolution?  The Impact of Training and Free Distribution of Fertilizer and Seeds on  Agricultural Productivity"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2025-04-16T04:34:39.665040+00:00"}