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• 野生稲（Oryza latifolia）の耐塩性機構に関する生理・生化学的研究

  2004.03

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Published Papers 【 display / non-display 】

• Desalination of Sedimentation Solid Discharged from Aquaculture Tanks for Farmland Application

  YAMAOKA Masaru, NAKAMURA Ichirou, KINJO Kazutoshi, ENDO Masato, YAMASHINA Fumika, YAMAUCHI Chihiro

  Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering ( The Japanese Society of Irrigation, Drainage and Rural Engineering )  93 ( 1 ) I_13 - I_20   2025 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  <p>The authors are conducting research with the aim of promoting resource recycling of sedimentation solids (fish feces, leftover food, etc.) collected from aquaculture tanks where saltwater fish are raised to agricultural land as fertilizer. As a part of this study, the desalination of sedimentation solids was examined in laboratory experiments, the laboratory experiments showed that (1) the hydraulic conductivity of the sedimentation solids was about 10^-5 cm/s, and (2) the EC and Na⁺ concentration of the sedimentation solids were less than 2.2 mS/cm and 240 mg/L, respectively, when desalinating water (pure water) five times the dry weight of the sedimentation solids was added to permeate the sedimentation solids in consideration of the water content of the sedimentation solids. These EC and Na⁺ concentrations were lower than EC of 4.8 mS/cm and Na⁺ concentration of 1,140 mg/L, which were proposed as a rough guideline for the desalination of sedimentation solids in a previous report by the authors. Based on the experimental results of Na⁺ concentrations, desalination of sedimentation solids was attempted to model using tanks-in-series model. The model calculations for each experimental case were estimated the amount of water required for desalination. The amount was 14.0 mm per unit area and 1.75 L/kg per dry weight of precipitated solids.</p>

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• Effects of Harvesting Method on Seed Yield and Seed Quality in Urochloa ruziziensis （cv. ’OKI-1’and cv.'Br-203')

  Y Imura, I Nakamura, W Juntasin, M A Hossain, S Thaikua, R Poungkaew and Y Kawamoto

  Agronomy   14 ( 3 )   2024.03 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• Properties and Salinity of Sedimentation Solid Discharged from Aquaculture Tanks for Farmland Application

  YAMAOKA Masaru, NAKAMURA Ichirou, KINJO Kazutoshi, ENDO Masato, YAMASHINA Fumika, YAMAUCHI Chihiro

  Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering ( The Japanese Society of Irrigation, Drainage and Rural Engineering )  91 ( 2 ) 149 - 155   2023.12 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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  <p>The fertilizer components and salinity of sediments (fish feces, leftovers, etc.) collected from aquaculture tanks, where saltwater fish are raised, were investigated for application to farmlands. The sedimentation solids were acidic at pH 4.9, and the C/N ratio was lower than those of cattle manure and swine manure. Total nitrogen and phosphate were higher than those of cattle manure and swine manure, but potassium was much lower than those of cattle manure and swine manure. The content of heavy metals in the sedimentation solids was well below the allowable amount for sludge fertilizer. The sedimentation solids contained high concentrations of chloride (Cl^-) and sodium (Na⁺) ions. The origin of the Cl^- and Na⁺ was thought to be due to seawater in the sedimentation solids. Since commercial compost made from cattle manure contained about 1.82% Cl^- and 0.57% Na⁺ in dry matter, it was considered that the sedimentation solids would not be a problem in application to agricultural land if the Cl^- and Na⁺ contents were similar or lower.</p>

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• Growth of the common ice plant Mesembryanthemum crystallinum L. in the tsunami-affected soil generated by earthquake off the Pacific coast of Tohoku.

  S. Agarie, M. Tada, M. Kimura, H. Suzuki, M. Morokuma, M. Toyota and I. Nakamura.

  Plant Production Science     2022.05 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Production of doubled haploid through anther culture of the male fertile lines in the CMS system of eggplant with the cytoplasm of Solanum grandifolium.

  Md. M. R. Khan, T. Matsuyama, I. Nakamura, K. Ureshino, T. Arita, M. Iwayoshi, Y. Ogura-Tsujita and S. Isshiki.

  Environmental Control in Biology     2022.02 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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• 野菜用アマランサス(Amaranthus spp.)の沖縄における生育特性および品質の系統間差異.

  大城正信, 赤嶺光, モハメドアムザドホサイン, 仲村一郎, 玉城政信, 野瀬昭博

  日作記.   84 ( 1 ) 69 - 77   2015  [Refereed]

   

  DOI

• 塩ストレス下における野生稲Oryza officinalis Wall ex Wattの乾物生産および光合成能力.

  西澤優, 仲村一郎, モハメド アムザド ホサイン, 赤嶺光, 鄭紹輝

  日作記.   84 ( 1 ) 49 - 55   2015  [Refereed]

   

  DOI

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Na⁺ and K⁺ behavior in leaf blade cells of salinity tolerant wild <i>Oryza</i> species under the salt stress conditions

  Yabiku Takayuki, Nakamura Ichiro, Shimoji Sayaka

  Abstracts of Meeting of the CSSJ  2019  -  2019 

  CiNii Research

• Morphological characteristics and genetic analysis of “twin rice", a multipistil mutant of rice

  Agarie Sakae, Yokoyama Kana, Okaba Yuri, Morokuma Masahiro, Nakamura Ichiro, Hoque Aminul

  Abstracts of Meeting of the CSSJ  2016  -  2016 

  CiNii Research

• Effects of fertilizers on growth characteristics, yield and quality of edible amaranthus spp.in Okinawa, japan.

  Ohshiro M., Hossain M.A., Akamine H., Nakamura I., Tamaki M. and Nose A.

  Jpn. J. Crop Sci.  2013  -  2013 

• Growth characteristics, yield and quality of edible amaranthus spp. in gray soil, Dark-red soil and red soil in Okinawa, Japan.

  Ohshiro M., Hossain M.A., Akamine H., Nakamura I., Tamaki M. and Nose A.

  Jpn. J. Crop Sci.  2012  -  2012 

• Curcumin and mineral contents of turmeric (Curcuma longa L.) at different growth stages in Okinawa, Japan.

  Hossain M.A., Akamine H., Nakamura I. and Tamaki M.

  International Crop Science Congress.  2012  -  2012 

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Grant-in-Aid for Young Scientists(B)

  Project Year: 2009  -  2011 

  Direct: 1,100,000 (YEN)  Overheads: 330,000 (YEN)  Total: 1,430,000 (YEN)

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