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JIRCAS Research Projects

Africa rice farming system

"Africa rice farming system"
Development of sustainable rice cultivation and food production system in Africa

We will create new technologies and knowledge that will lead to increased rice production, a key crop in the region, and improved nutrition for the people, with the aim of building a sustainable food production system with resource utilization, centered on rice cultivation.
アフリカのための稲作を中心とした持続的な食料生産システムの構築【アフリカ稲作システム】
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Africa upland farming system

"Africa upland farming system"
Development of soil and crop management technologies to stabilize upland farming systems of African smallholder farmers

Our activities aim to develop and disseminate stable and sustainable land and cultivation management technologies for small-scale farming systems in the African savanna areas, where the natural environmental conditions are very different.
アフリカ小規模畑作システムの安定化に資する生産性・収益性・持続性を改善する土壌・栽培管理技術の開発【アフリカ畑作システム】
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Science and Technology Research Partnership for Sustainable Development (SATREPS) Projects

Project on establishment of the model for fertilizing cultivation promotion using Burkina Faso phosphate rock

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In Burkina Faso, there are 100 million tons of phosphate rock underutilized due to its low quality. Effective utilization of this PR resources must contribute to increasing agricultural productivity.

Fertility sensing and variety amelioration for rice yield (FY VARY) project

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Madagascar is one of the largest rice producers in Africa with a per capita rice consumption twice as high as that of Japan. We will develop rice production techniques to realize high yield even under low fertility conditions and evaluate the impact that adopting such techniques has on local farmers' income and nutritional status.

Research Activities and Results of JIRCAS Projects

TICAD8 Official Side Event “Managing African Soil for Food Security and Environmental Sustainability”
- Opportunities and Challenges of Agronomy to Solve Low Fertility/Nutrient Bottlenecks -

Ethiopia

Ethiopia

Ethiopia (/ˌiːθiˈoʊpiə/; Amharic: ኢትዮጵያ?, ʾĪtyōṗṗyā, ), officially known as the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ,… (More)

Ethiopia

Ethiopia

Ethiopia (/ˌiːθiˈoʊpiə/; Amharic: ኢትዮጵያ?, ʾĪtyōṗṗyā, ), officially known as the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ,… (More)

Ethiopia

Ethiopia

Ethiopia (/ˌiːθiˈoʊpiə/; Amharic: ኢትዮጵያ?, ʾĪtyōṗṗyā, ), officially known as the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ,… (More)

Ethiopia

Ethiopia

Ethiopia (/ˌiːθiˈoʊpiə/; Amharic: ኢትዮጵያ?, ʾĪtyōṗṗyā, ), officially known as the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ,… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Ghana

Ghana

Ghana (/ˈɡɑːnə/), officially the Republic of Ghana, is a sovereign unitary presidential constitutional democracy, located along the Gulf of Guinea and Atlantic… (More)

Tanzania

Tanzania

Tanzania /ˌtænzəˈniːə/, officially the United Republic of Tanzania (Swahili: Jamhuri ya Muungano wa Tanzania), is a large country in Eastern Africa within the… (More)

Tanzania

Tanzania

Tanzania /ˌtænzəˈniːə/, officially the United Republic of Tanzania (Swahili: Jamhuri ya Muungano wa Tanzania), is a large country in Eastern Africa within the… (More)

Benin

Benin

Benin (/bᵻˈniːn/ bǝ-NEEN or /bᵻˈnɪn/ bǝ-NIN; French: Bénin), officially the Republic of Benin (French: République du Bénin) and formerly Dahomey, is a country… (More)

Benin

Benin

Benin (/bᵻˈniːn/ bǝ-NEEN or /bᵻˈnɪn/ bǝ-NIN; French: Bénin), officially the Republic of Benin (French: République du Bénin) and formerly Dahomey, is a country… (More)

Mauritania

Mauritania

Mauritania /mɔːrɪˈteɪniə/ (Arabic: موريتانيا‎‎ Mūrītānyā; Berber: Muritanya or Agawej; Wolof: Gànnaar; Soninke: Murutaane; Pulaar: Moritani; French: Mauritanie… (More)

Mauritania

Mauritania

Mauritania /mɔːrɪˈteɪniə/ (Arabic: موريتانيا‎‎ Mūrītānyā; Berber: Muritanya or Agawej; Wolof: Gànnaar; Soninke: Murutaane; Pulaar: Moritani; French: Mauritanie… (More)

Mauritania

Mauritania

Mauritania /mɔːrɪˈteɪniə/ (Arabic: موريتانيا‎‎ Mūrītānyā; Berber: Muritanya or Agawej; Wolof: Gànnaar; Soninke: Murutaane; Pulaar: Moritani; French: Mauritanie… (More)

Mauritania

Mauritania

Mauritania /mɔːrɪˈteɪniə/ (Arabic: موريتانيا‎‎ Mūrītānyā; Berber: Muritanya or Agawej; Wolof: Gànnaar; Soninke: Murutaane; Pulaar: Moritani; French: Mauritanie… (More)

Publications

2023

  • Ichinose, Y.*, Nishigaki, T., Shibata, M., Kilasara, M., Shinjo, H., Funakawa, S. (2023) Carbon and nutrient budgets of the Chagga home garden system in the Kilimanjaro highlands, Tanzania.. Soil Use and Management, https://doi.org/10.1111/sum.12923
  • Nakagawa, A.C.S., Oya, T. . (2023) Contrasting responses to prolonged drought stress and mitigation effects of manure application on plant growth of two tropical forage legumes.. African Journal of Agricultural Research, 19:
  • Soma, D., Iwasaki, S., Fukuda, M., Nakamura, S., Bambara, D., Nagumo, F.. (2023) Effect of slow?release phosphorus components in calcined and acidulated phosphate rock significantly correlated with ground?water levels in lowland rice cultivation in Center West Burkina Faso.. International Journal of Plant Production,, https://doi.org/10.1007/s42106-023-00258-z
  • Maeno, O.K., Piou, C., Lem?nager, N. . (2023) Egg size-dependent embryonic development in the desert locust, Schistocerca gregaria.. Journal of Insect Physiology,
  • Rinasoa, S., Rakotoson, T., Rabeharisoa, L., Tsujimoto, Y., Nishigaki, T. (2023) Farmyard manure application increases lowland rice yield in phosphorus-deficient soils, but not in soils with high pH and phosphorus-fixing capacity. Field Crops Research, 296:. https://doi.org/10.1016/j.fcr.2023.108906
  • Nikiema, A. R., Shiratori, S., Rafalimanantsoa, J., Ozaki, R., Sakurai, T. . (2023) How are higher rice yields associated with dietary outcomes in smallholder farm households in Madagascar?. Food Security, 15:. https://doi.org/10.1007/s12571-022-01333-5
  • Maeno, K.O., Piou, C., Whitman, D.W., Ould Ely, S., Ould Mohamed, S., Jaavar, M.E.H., Ould Babah Ebbe, M.A.. (2023) How molting locusts avoid cannibalism.. Behavioral Ecology, https://doi.org/10.1093/beheco/arad025
  • Ishizaki, T., Ueda, Y., Takai, T., Maruyama, K., Tsujimoto, Y. (2023) In-frame mutation in rice TEOSINTE BRANCHED1 (OsTB1) improves productivity under phosphorus deficiency. Plant Science, https://doi.org/10.1016/j.plantsci.2023.111627
  • Johnson, J.M., Ali, I., Dossou-Yovo, E.R., Senthilkumar, K., Tsujimoto, Y., Asai, H., Saito, K.. (2023) Inorganic fertilizer use and its association with rice yield gaps in sub-Saharan Africa.. Global Food Security, 38:
  • Rajonandraina, T., Ueda, Y., Wissuwa, M., Kirk, G.J.D., Rakotoson, T., Manwaring, H., Andriamananjara, A., Razafimbelo, T. . (2023) Magnesium supply alleviates iron toxicity-induced leaf bronzing in rice through exclusion and tissue-tolerance mechanisms. Frontiers in Plant Science, 14:
  • Rajonandraina, T., Rakotoson, T., Wissuwa, M., Ueda, Y., Razafimbelo, T., Andriamananjara, A., Kirk, G.J.D.. (2023) Mechanisms of genotypic differences in tolerance of iron toxicity in field-grown rice. Field Crops Research. Field Crops Research, 298:
  • Takai, T., Taniguchi, Y., Takahashi, M., Nagasaki, H., Yamamoto, E., Hirose, S., Hara, N., Akashi, H., Ito, J., Arai-Sanoh Y., Hori, K., Fukuoka, S., Sakai, H., Tokida, T., Usui, Y., Nakamura, H., Kawamura, K.,Asai, H., Ishizaki, T., Maruyama, K., Mochida, K., Kobayashi, N., Kondo, M., Tsuji, H., Tsujimoto, Y., Hasegawa, T., Uga, Y.. (2023) MORE PANICLES 3, a natural allele of OsTB1/FC1, impacts rice yield in paddy fields at elevated CO2 levels. The Plant Journal, 114:. https://doi.org/10.1111/tpj.16143
  • ODAMA, E., Tsujimoto, Y., Yabuta, S., Akagi, I., Sakagami, J.. (2023) P-dipping improved NERICA 4 rice seedling resilience to water and nutrient stresses under rainfed-like conditions. Rhizosphere, 26:. https://doi.org/10.1016/j.rhisph.2023.100688
  • Shiratori, S., Narmandakh, D., Rafalimanantsoa, J.. (2023) Seasonal Energy Deficiency of Rural Rice Farmers in Madagascar. Japanese Journal of Agricultural Economics, 25:. https://doi.org/10.18480/jjae.25.0_13
  • Traore, B., Traore, M., Birba, S., Nacro, H.B., Sarr, P.S., Ouattara, B.. (2023) Short-term effect of calcined phosphate rock on soil macrofauna diversity and abundance in lixisol in a semi-arid area of Burkina Faso. International Journal of Innovation and Applied Studies, 39:
  • Maeno, K.O., Ould Ely, S., Ould Mohamed, S., Jaavar, M.E.H., Ould Babah Ebbe, M.A.. (2023) Thermoregulatory behavior of lekking male desert locusts, Schistocerca gregaria, in the Sahara Desert.. Journal of Thermal Biology, https://doi.org/10.1016/j.jtherbio.2023.103466

2022

  • Mukai, M., Hiruma, K., Nishigaki, T., Utami, Y.D., Otaka, J., Yoshihashi, T., Sarr, P.S., Oo, A. Z., Takai, T., Tujimoto, Y.. (2022) Dysbiosis of the rhizosphere microbiome caused by γ-irradiation alters the composition of root exudates and reduces phosphorus uptake by rice in flooded soils. Plant and Soil, https://doi.org/10.1007/s11104-022-05726-5
  • Rakotondramanana, M., Tanaka, R., Pariasca-Tanaka, J., Stangoulis, J., Grenier,C., Wissuwa, M. . (2022) Genomic prediction of zinc-biofortification potential in rice gene bank accessions. Theoretical and Applied Genetics, 135:. https://doi.org/10.1007/s00122-022-04110-2
  • Oo, A. Z., Tsujimoto, Y.. (2022) Localized phosphorus application via P-dipping is more effective for improving initial rice growth in lower temperature conditions. Plant Production Science, 26:. https://doi.org/10.1080/1343943X.2022.2160363
  • Rinasoa, S., Nishigaki, T., Rabeharisoa, L., Tsujimoto, Y., Rakotoson, T.. (2022) Organic materials with high P and low C:P ratio improve P availability for lowland rice in highly weathered soils: Pot and incubation experiments. Journal of Plant Nutrition and Soil Science, 185:. https://doi.org/10.1002/jpln.202100266

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  • Technology Showcase for Sub-Saharan Africa
    Focusing on the results of collaborative research conducted by JIRCAS in recent years, we have compiled technologies that can contribute to the development of sustainable food systems, which are expected to be utilized in the Asia-Monsoon region and Sub-Saharan Africa.
    JIRCAS_TechShowcase_Sub-SaharanAfricaen.pdf5.95 MB