論文 - 内山 智裕
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肉用牛経営におけるメタン削減技術の効果と課題 ─カシューナッツ殻液飼料の効果検証─ 査読あり
植木緑海, 内山智裕
東京農業大学農学集報 68 ( 2 ) 48 - 53 2023年10月
担当区分：責任著者 記述言語：日本語 掲載種別：研究論文（大学，研究機関等紀要）
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フィンランドの農業事情と普及 招待あり
内山智裕
農業普及研究 28 ( 1 ) 34 - 39 2023年06月
担当区分：筆頭著者 記述言語：日本語 掲載種別：研究論文（学術雑誌）
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農業経営の倒産・再生・継承研究の現段階
内山 智裕
農業経営研究 61 ( 1 ) 68 - 68 2023年04月
担当区分：筆頭著者 記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等） 出版者・発行元：日本農業経営学会
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シンポジウム報告／日系商社による穀物調達行動の実態と課題 招待あり
内山 智裕
フードシステム研究 30 ( 3 ) 149 - 157 2023年
担当区分：筆頭著者, 最終著者, 責任著者 記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：日本フードシステム学会
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Assessing the Acceptability and the Feasibility of an Agricultural Package of Technologies for Risk Management in Southern Haiti
VALCIN RIVAL, UCHIYAMA TOMOHIRO, HATANAKA KATSUMORI, OHE YASUO, PAUL BENEDIQUE
International Journal of Environmental and Rural Development 14 ( 2 ) 122 - 131 2023年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>Haitian farming faces serious climate risks. Losses due to hurricanes, droughts, floods, and diseases seriously threaten productivity. This paper aimed to study the feasibility and acceptability of agricultural technology packages that could help manage risk while improving the productivity of farming in Haiti. Significant risks faced by farmers include uninsurable disasters due to their systemic and catastrophic nature. Therefore, a package of technologies including a paid-in-kind "stabilization account" component may be an appropriate financial tool for risk management. Are Haitian farmers open to such innovation? To answer this question, we collected data from 28 agricultural experts and 1,400 farmers, including 234 maize farmers in southern Haiti, and adopted the new product development (NPD) process to test the feasibility of the concept. We used the Spearman correlation, multinomial logistic regression, and linear regression to determine factors affecting the openness of Haitian farmers to innovation. We also conducted the Cochran-Mantel-Haenszel test to analyze the association between "financial inclusion" and "openness to innovation." Based on the results, 70 % of farmers expressed their willingness to pay 6 % to more than 12 % of their harvested crop as a stabilization account. Farmers with "financial inclusion" are expected to be twice as likely to adopt innovative technologies, while farm size, gender, household size, and revenue had a significant positive impact on openness to innovation. However, contrary to the trends found in literature, we found that risk aversion may positively affect the acceptance and adoption of some technologies. The results also suggest that, in Haitian farming, risks linked to natural disasters are more strongly related to financial incapacity than uncertainty. Therefore, access to proper just-in-time inputs complemented by a financial tool to overcome uncertainty will significantly boost the adaptability and resilience of Haitian farmers toward climate risks.</p>
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都市近郊における農家レストランの成功要因と発展可能性─農家レストランいぶきを事例として─ 査読あり
増田絵夢, 内山智裕, 寺野梨香, 土田志郎
東京農業大学農学集報 67 ( 3 ) 116 - 121 2022年12月
担当区分：責任著者 記述言語：日本語 掲載種別：研究論文（大学，研究機関等紀要）
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アメリカ─日本の飼料穀物・配合飼料バリューチェーンにおける日系商社グループの構造分析
野口 敬夫, 内山 智裕, 西嶋 亜矢子, 磯田 宏, 八木 浩平
農村研究 2022 ( 135 ) 15 - 31 2022年09月
記述言語：日本語 出版者・発行元：食料・農業・農村経済学会
<p>本稿では，アメリカ─日本の飼料穀物・配合飼料バリューチェーンにおける日系商社グループの構造について検討した。穀物ビジネスでは，基本的に差別化による高付加価値化が困難なため，スケールメリットの発揮によるコスト削減が収益性を高める手段となる。そこで，日系商社は中国へ進出して販路開拓を図る一方，アメリカにおいて穀物集荷・輸出会社の統合を進め，穀物取扱量を拡大させている。また，代替性が高い配合飼料についても付加価値の創出は難しく，競争力の向上にはコスト削減が要求される。そのため，飼料会社は原料調達の多角化，大規模生産者との直接取引，大ロットによる直接配送等を進めている。</p>
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小売業におけるフラワーロス対策の内容解明─3社の事例分析─ 査読あり
田村夢果, 内山智裕, 井形雅代
東京農業大学農学集報 67 ( 2 ) 81 - 86 2022年09月
担当区分：責任著者 記述言語：日本語 掲載種別：研究論文（大学，研究機関等紀要）
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日系商社による米国飼料穀物・油糧種子事業をめぐる戦略の動向 査読あり
内山智裕、西嶋亜矢子
東京農業大学農学集報 67 ( 1 ) 12 - 23 2022年06月
担当区分：筆頭著者 記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Income Generation and Expenditure of Organic Rice Farming Households: Case Study of Preah Vihear Province, Cambodia
SOK CHANMONY, UCHIYAMA TOMOHIRO, SHIMOGUCHI NINA N.
International Journal of Environmental and Rural Development 13 ( 1 ) 56 - 61 2022年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>In Cambodia, organic rice farmers commonly engage in integrated farming and off-farm activities to supplement their income. To identify factors for income optimization, this study attempted to assess the income and expenditure structure of organic rice farm households in the Preah Vihear Province, Cambodia. Guided with a structured questionnaire, a total of 90 and 50 randomly selected farmers were interviewed in 2019 and 2021, respectively. This study utilized both descriptive and multiple regression analyses. Overall, farmers tended to expand their cultivation area and increase income from off-farm jobs. Particularly, large-scale farmers (5ha<) significantly expanded their farmland area and increased their livestock and off-farm activities, while small-scale farmers (5ha>) reduced their farmland area and increased their off-farm activities. Moreover, the multiple regression analysis revealed that secured spare time from combine-harvester usage opened opportunities for farmers to engage in off-farm jobs. These off-farm jobs, particularly by male farmers, boosted their respective annual income. On the other hand, existing loans gave several farmer respondents negative profit in 2020. Thus financial management seemed to be a factor affecting farmers’ incomes in rural areas. For further study, farm household employment choice behavior, particularly on labor mobility and off-farm activities, is recommended.</p>
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フィンランド酪農の構造変化と経営対応
内山 智裕
農業 1 45 - 50 2022年
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伝統野菜の生産拡大の成功要因と将来展望─「比企のらぼう菜」を事例として─ 査読あり
松尾明音・内山智裕
東京農業大学農学集報 66 ( 3 ) 75 - 80 2021年12月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌）
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Effective Farm Business Strategy for Local Commodities in Haiti; Case of Maize 査読あり
Rival Valcin and Tomohiro Uchiyama
Études Caribéennes ( 49 ) 2021年08月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌）
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Farmers’ Perception on Contract Farming: A Case of Sunflower Seed Crop in Central Tanzania
MUJAMA RUBASHA MATIKU, UCHIYAMA TOMOHIRO
International Journal of Environmental and Rural Development 12 ( 2 ) 65 - 70 2021年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>In most developing countries like Tanzania, poor farmers have limited access to agricultural inputs. In case of sunflower seed, one of the proposed solutions is through use of contract farming among the farmers. In the country, sunflower oil has been preferred as edible cooking oil for many households since it is much safer for human consumption. Despite the government’s new agricultural policy, contract farming has been facing some challenges in coordination such as pricing, trust, arrangement for the delivery of the inputs, procedures for paying farmers, poor credit (cash) services as agreed of the contract. The study aims to investigate the impact of contract farming program among sunflower farmers. Specifically, the study aims to (i) determine households’ background characteristics; (ii) examine contract arrangement of sunflower seeds in Tanzania; (iii) discuss the farmers’ perception in terms of trust, and personal relations play for their coordination. The field study was conducted in August and September 2019, selecting 80 farmers in two regions in Central Tanzania. Among them 40 farmers were sunflower producers with contract farming with Three Sisters Company Ltd and Ikungi Sunflower Edible Cooking Oil Company for eight (8) years; 40 farmers were sunflower producers without contract farming. Based on the field study, contract terms and conditions, hereafter called contract design attributes such as mode of payment and price setting of farmers’ crop produce can affect farmers’ decisions to participate in contract farming, varyingly affecting their expected level of utility from participation. On the other hand, in contract farming, farmers produce quality seeds with high cooking oil content. Surprisingly, in contract terms, prices are not set in advance, contract farmers sell their produce with similar price to the local sunflower seed. Finally, lack of education was the factor for non-contract farmers to participate in contract farming.</p>
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Evaluation of Organic Rice Contract Farming Model in Cambodia 国際誌
SOK CHANMONY, UCHIYAMA TOMOHIRO, SHIMOGUCHI NINA N.
International Journal of Environmental and Rural Development 12 ( 2 ) 176 - 181 2021年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>In Cambodia, organic farming under contract farming scheme is considered as one of the measures for better access to markets and poverty reduction since 2012. Previous literature revealed that organic rice farmers can generate more profit by engaging in contract farming. But only a few organic farming cases under contract farming succeeded. Since there was a lack of empirical study on current condition and issues of contract farming design and arrangement, this study clarified the effectiveness of organic rice contract farming arrangement and determined the most suitable contract farming model for small-scale farmers to maximize economic benefits. From a total of 5,053 organic rice contract farming households in Preah Vihear province, a total of 90 respondents were randomly selected. In the study area, two different organic rice contract farming models were found, namely intermediary model (Model A) and the multipartite model (Model B). Economic analysis approach revealed that even farmers in model A received a higher rice price than model B, but there were still model A farmers who did side-selling much more than model B farmers. Thus, third-party in model B seemed to play an essential role in contract farming to make proper arrangements as well as to balance the bargaining between farmers and contractors. In general, model B contract farming (also known as multi partite model) is recommended for organic rice farmers to maximize their economic benefits as well as profits.</p>
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Contracting and Negotiation Attributes: A Case of Sunflower Seed Crop in Central Tanzania
MUJAMA RUBASHA MATIKU, UCHIYAMA TOMOHIRO
International Journal of Environmental and Rural Development 12 ( 2 ) 49 - 55 2021年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>In the most developing countries like Tanzania, poor farmers have limited access to agricultural inputs. One of the proposed solutions is to link farmers with the private sector through contract farming. In Tanzania, sunflower oil has been preferred as edible cooking oil for many households since it has a low cholesterol level for human consumption. Moreover, sunflower-contract farming was adopted as part of the new agricultural policy in 2009-2010 cropping season, majoring in providing triangular benefits to the stakeholders, including sunflower-farmers, private companies, and the Government of Tanzania. Despite the government of Tanzania’s efforts to link the sunflower farmers with the private sector, contract farming has been facing some challenges in coordination such as pricing, production services and credit services. The purpose of this study is to investigate the impact of the contract farming program among sunflower farmers. Specifically, the study aims to: (i) determine the socio-economic characteristics of the sample farmers; (ii) identify private firms providing contract farming to the sunflower farmers; and (iii) evaluate the relationship of the negotiation attributes in income growth among sunflower farmers. The field survey was conducted in March 2020, targeting 40 contracted farmers and 40 non-contracted farmers in the two regions of Central Tanzania. In relationship of the negotiation attributes the paper points out the credit access and production services were significant with farmers’ income. Besides, the results show that there was no statistically significant relationship between advance pricing and income growth among sunflower farmers. This was because in contract terms price is not set in advance.</p>
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ASSESSING THE SUSTAINABILITY OF THE INDONESIAN HALAL BEEF SUPPLY CHAIN 査読あり
Akhmad Mahbubi, Tomohiro Uchiyama
JOURNAL ON FOOD SYSTEM DYNAMICS 11 ( 5 ) 468 - 481 2020年
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌）
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Economic Impact of Rice Tractor and Combine Harvester Custom Services in Northwest Cambodia
SUN DALIN, UCHIYAMA TOMOHIRO, SHIMOGUCHI NINA N.
International Journal of Environmental and Rural Development 11 ( 2 ) 128 - 133 2020年
記述言語：英語 出版者・発行元：Institute of Environmental Rehabilitation and Conservation, Research Center
<p>Agricultural machinery has become significantly important to carry out farm work and to address labor scarcity in Cambodia. However, rural areas face many challenges such as lack of farmers’ improper machinery utilization and lack of skilled operators in order to implement agricultural mechanization. The effective use of tractor or combine harvester (CH) requires not only management knowledge and experience, but also proper the economic evaluation. This study aims to determine the potential of rice tractor and combine harvester custom service to create an economic advantage for the agricultural machinery owners. A survey of 28 tractor owners (group T), 21 CH owners (group CH), and 23 tractors and CH owners (group B) in Banan District, Battambang Province was conducted in March 2019. The result indicated that the annual custom service area by group T, CH, and B were 133.4 ha, 213.1 ha, 398.9 ha (tractor 180.8 ha, and CH 216.1 ha), respectively. The average operating cost was estimated at 30.0 USD/ha for group T, 58.9 USD/ha for group CH, and 26.2 USD/ha (tractor) and 56.3 USD/ha (CH) from group B. Among the costs incurred, depreciation cost was the highest cost, followed by diesel and labor costs. In some cases, owners tend to offer higher pay to skilled operators to work for them especially during the peak seasons. The break-even point per year were estimated at 116.4 ha for group T, 117.5 ha for group CH, and 113.0 ha (tractor) and 109.6 ha (CH) for group B. In general, custom service by group seemed to vary on the field and infrastructure conditions, operators’ skill, frequently machine breakage, and owners’ desire to gain profit. Therefore, this study suggests that the owners should prolong the economic life of tractors or CHs by conducting proper and regular maintenance that will eventually lead to decrease break-even area.</p>
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Capturing consumer value and clustering customer preferences in the Indonesian halal beef market 査読あり
Akhmad Mahbubi, Tomohiro Uchiyama, Katsumori Hatanaka
Meat Science ( 156 ) 23 - 32 2019年10月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌）
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A comparison of halal beef consumer preferences in majority and minority Muslim areas in Indonesia 査読あり
Akhmad Mahbubi and Tomohiro Uchiyama
International Journal of Islamic Marketing and Branding 4 ( 3-4 ) 195 - 211 2019年01月
担当区分：責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌）