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Yamada, Satoshi*; Kita, Makoto*; Goto, Yukari*; Ishimori, Yuu
JAEA-Research 2011-027, 38 Pages, 2011/11
Tottori University and Japan Atomic Energy Agency started a joint study to investigate the effect of hot spring water on the growth of vegetable plants in 2009. The aim of the study is to examine a feasibility of producing a regionally special vegetable with considering the characteristics of the Misasa district, where radon hot springs are historically famous. This report illustrates the intermediate results obtained from the study carried out from 2009 to 2010. (1) Screening test: Eighteen plants were examined for screening. As the results, Misasa hot spring water used in the water culture enlarged the growths of 14 plants. Lastly, 9 plants were selected as candidate plants for further examinations. (2) Sample preparation: Plants sampled in the water culture were lyophilized and stored in a freezer for nutrio-physiological analyses to select the suitable plant from the 9 plants. (3) Examination in labor-saving cultivation: Preliminary examinations were performed with a large-scale system to establish a practical labor-saving water culture system.
Goto, Yukari*; Nakagawa, Takuya*; Makino, Yuko*; Yamada, Satoshi*; Yamada, Mina*; Sakoda, Akihiro; Ishimori, Yuu
no journal, ,
Tottori University and Japan Atomic Energy Agency started a joint study to develop an environmental remediation technique for agricultural soil. Nine plants were water-cultured and examined for screening. A few were selected as candidates for demonstrations in fields. Preselected plants were mainly halophytes. Easily cultivated and harvested plants without harmful effect on new agriculture were also considered. Seedings prepared were first grown for a certain term. Additive-free, Cs and Sr groups, which are both stable isotopes, were then made. Stems, leaves and roots were harvested, in principle, two weeks after the addition, to measure K, Ca, Mg, Sr and Cs concentrations in them. It was concluded that New Zealand spinach and ice plant were most adequate for removing contaminants from surface soil. The two accumulate Cs and Sr mostly in the shoots, are prostrate, and spread the roots shallowly. For valid application, growth-phase dependences of absorption and distribution, growth property and root distribution should be elucidated. Finally, the application study plan was developed based on screening test results.