Breakthrough in Nutrient Use Efficiency for Rice by Genetic Improvement and Fertility Sensing Techniques in Africa




  • Kensuke Kawamura , Tomohiro Nishigaki , Yasuhiro Tsujimoto , Andry Andriamananjara , Michel Rabenaribo , Hidetoshi Asai , Tovohery Rakotoson & Tantely Razafimbelo, "Exploring Relevant Wavelength Regions for Estimating Soil Total Carbon Contents of Rice Fields in Madagascar from Vis-NIR Spectra with Sequential Application of Backward Interval PLS", Plant Production Science, 2020; DOI:10.1080/1343943X.2020.1785898
  • Tomohiro Nishigaki , Kenta Ikazaki , Yasuhiro Tsujimoto , Andry Andriamananjara , Tovohery Rakotoson & Tantely Razafimbelo, "Soil survey of the east coast and the central highlands indicates need to update Madagascar soil map", Soil Science and Plant Nutrition, 2020; DOI:10.1080/00380768.2020.1769452 
  • Ryosuke Ozaki and Takeshi Sakurai, "The Adoption of Upland Rice by Lowland Rice Farmers and Its Impacts on Their Food Security and Welfare in Madagascar", Japanese Journal of Agricultural Economics, Vol.22, pp.106-111, 2020; DOI:10.18480/jjae.22.0_106
  • Tovohery Rakotoson, Marie Holz & Matthias Wissuwa, "Phosphorus deficiency tolerance in Oryza sativa: Root and rhizosphere traits", Rhizosphere, 2020; DOI:10.1016/j.rhisph.2020.100198
  • Njato Mickaël Rakotoarisoaa, Yasuhiro Tsujimotob & Aung Zaw Oo, "Dipping rice seedlings in P-enriched slurry increases grain yield and shortens days to heading on P-deficient lowlands in the central highlands of Madagascar", Field Crops Research, 2020; DOI:10.1016/j.fcr.2020.107806
  • Hobimiarantsoa Rakotonindrina, Kensuke Kawamura, Yasuhiro Tsujimoto, Tomohiro Nishigaki, Herintsitohaina Razakamanarivo, Bruce Haja Andrianary and Andry Andriamananjara, "Prediction of Soil Oxalate Phosphorus using Visible and Near-Infrared Spectroscopy in Natural and Cultivated System Soils of Madagascar", Agriculture, 10(5), 177, 2020; DOI:10.3390/agriculture10050177


  • Yasuhiro Tsujimoto, Tovohery Rakotoson, Atsuko Tanaka & Kazuki Saito, "Challenges and opportunities for enhancing fertilizer use efficiency of rice production in Sub-Saharan Africa", Plant Production Science, 22(4), 413-427. 2019, DOI: 10.1080/1343943X.2019.1617638
  • Naoki Moritsuka, Kensuke Kawamura, Yasuhiro Tsujimoto, Michel Rabenarivo, Andry Andriamananjara, Tovohery Rakotoson & Tantely Razafimbelo, "Comparison of visual and instrumental measurements of soil color with different low-cost colorimeters", Soil Science and Plant Nutrition,  65(6), 605-615. 2019, DOI: 10.1080/00380768.2019.1676624
  • Juan Pariasca-Tanaka, Cedric Baertschi and Matthias Wissuwa, "Identification of Loci Through Genome-Wide Association Studies to Improve Tolerance to Sulfur Deficiency in Rice", Frontiers in Plant Science, 2020, DOI:10.3389/fpls.2019.01668
  • Aung Zaw Oo,Yasuhiro TSUJIMOTO, Njato Mickaël RAKOTOARISOA. "Optimizing the Phosphorus Concentration and Duration of Seedling Dipping in Soil Slurry for Accelerating the Initial Growth of Transplanted Rice", Agronomy 10 (2): 240, DOI:10.3390/agronomy10020240
  • Rakotoson, T., Tsujimoto, Y., "Pronounced effect of farmyard manure application on P availability to rice for paddy soils with low total C and low pH in the central highlands of Madagascar", Plant Production Science, DOI:10.1080/1343943X.2020.1740601
  • Moritsuka, N., Satio, H., Tajima, R., Takahashi, Y., Hirai, H., "Farm-Scale Estimation of Total Nitrogen Content in Surface Paddy Soils by Extraction with Commercially Available Hydrogen Peroxide", Agronomy 2020, 10(1), 40. DOI:10.3390/agronomy10010040
  • Ozaki, R. Sakurai, T., "The Adoption of Upland rice by lowland rice farmers and its impacts on their food security and welfare in Madagascar", Japanese Journal of Agricultural Economics. Vol. 22, 2020.


  • Kensuke Kawamura, Yasuhiro Tsujimoto, Tomohiro Nishigaki, Andry Andriamananjara, Michel Rabenarivo, Hidetoshi Asai, Tovohery Rakotoson and Tantely Razafimbelo. Laboratory Visible and Near-Infrared Spectroscopy with Genetic Algorithm-Based Partial Least Squares Regression for Assessing the Soil Phosphorus Content of Upland and Lowland Rice Fields in Madagascar.Remote Sensing. 2019, 11(5), 506, DOI:10.3390/rs11050506
  • Tomohiro Nishigaki, Yasuhiro Tsujimoto, Seheno Rinasoa, Tovohery Rakotoson, Andry Andriamananjara, Tantely Razafimbelo. Phosphorus uptake of rice plants is affected by phosphorus forms and physicochemical properties of tropical weathered soils. Plant and Soil. (2019) 435:27–38, DOI: 10.1007/s11104-018-3869-1


  • Kawamura K., Tsujimoto Y., Rabenarivo M., Asai H., Andriamananjara A. and Rakotoson T., Vis-NIR Spectroscopy and PLS Regression with Waveband Selection for Estimating the Total C and N of Paddy Soils in Madagascar. Remote sensing, 2017, DOI:10.3390/rs9101081 
  • Toshiyuki Takai, Hiroshi Nakano, Satoshi Yoshinaga, Motohiko Kondo. Identification of a novel QTL for the number of spikelets per panicle using a cross between indica- and japonica-type high-yielding rice cultivars in Japan. Plant Breeding. 2018. 137, DOI:10.1080/1343943X.2019.1667836



  • The 124nd Japanese Society for Tropical Agriculture (2018.9, Kyoto) 
    Naoki Moritsuka, Kensuke Kawamura, Yasuhiro Tsujimoto, Michel Rabenarivo, Andry Andriamananjara, Tovohery Rakotoson, Tantely Razafimbelo           
    Reproducibility and compatibility of visual and instrumental measurement of soil color
  • The 82nd Annual Convention of the Japanese Psychological Association (2018.9, Sendai)
    Psychological Measurement of Motivation in Development Aid Projects:Findings and Challenges from a Farmer Training Program in Madagascar
  • 6th symposium on Phosphorus in Soils and Plants, PSP6(Belgium, Leuven)
    Tomohiro Nishigaki、Yasuhiro Tsujimoto, Seheno Rinasoa, Tovohery Rakotoson, Andry Andriamananjara, Tantely Razafimbelo
    P uptake of rice plants are highly related to the soil P forms and oxalate-extractable Al and Fe in the typical P-deficient soils of Madagascar
  • 6th symposium on Phosphorus in Soils and Plants, PSP6(Belgium, Leuven)   
    Seheno Rinasoa, Tovohery Rakotoson, Yasuhiro Tsujimoto, Lilia Rabeharisoa, Matthias Wissuwa
    Potential of nursery phosphorus micro-dosing in lowland rice production in Madagascar
  • 6th symposium on Phosphorus in Soils and Plants, PSP6(Belgium, Leuven) 
    Rakotoson, T., Tsujimoto, Y.   
    Effects of farmyard manure and soil characteristics on soil-plant P dynamics in submerged rice
  • 6th symposium on Phosphorus in Soils and Plants, PSP6(Belgium, Leuven)    
    Andriamananjara, A., Kawamura, K., Rabenarivo, M., Asai, H., Rakotoson, T., Tsujimoto, Y.  
    Estimating oxalate P of paddy soils in Madagascar using Vis-NIR reflectance spectroscopy


  • Invited speaker: 132th sympodium (a), Japanese society of breeding, Oct. 2017, Iwate Univ.,
    Tsujimoto Y., ~Excitement and headaches in field studies~, For the crop production in Africa.
  • Oral presentation: 2017 annual meeting, Japansese society of soil science and plant nutrition, Sep. 2017, Tohoku Univ., Tsujimoto Y. and Rakotoson T., 熱帯のイネ作付圃場におけるケイ素施用の効果と圃場間差異の解析
  • OralPresentation: Japanese Agricultural Systems Society (JASS) 2017 Spring Meeting, June 2017, Niigata Univ., Kawamura, K., Tsujimoto, Y., Asai, H., Rabenarivo, M., Andriamananjara, A. and Rakotoson, T. Laboratory spectroscopy for estimating total nitrogen and total carbon contents of soils in Madagascar.


  • 第2回農学中手の会研究集会 口頭発表(2016.11、雄琴市)Oral presentation: 2nd gathering of middle aged agronomist, Nov. 2016, Ogoto-city, Shiga,
    Tsujimoto Y., Agricultural struggle in Africaアフリカで農業と格闘する~Work at the field.生産現場での取り組み
  • 2016年度土壌肥料学会 口頭発表(2016.9、佐賀大学)Oral presentation: 2017 annual meeting, Japanese society of soil science and plant nutrition, Sep. 2016, Saga Univ., Tsujimoto Y. and Rakotoson T.
  • 第2回植物の栄養研究会 口頭発表(2016.9、名古屋市)