@misc{oai:repo.qst.go.jp:00070148,
 author = {Ishikawa, Nao and Tagami, Keiko and Uchida, Shigeo and 石川 奈緒 and 田上 恵子 and 内田 滋夫},
 month = {Jun},
 note = {Knowledge concerning selenium (Se) uptake from soil to crop is of particular importance for environmental assessments for Se contaminant sites or nuclear waste repositories including the long half-life radionuclide 79Se (T1/2 = 1.1*10^6 y). Since plant uptake of Se is affected by several factors, including plant species and soil properties, development of a method for estimation of crop uptake of Se using some soil and crop properties would be useful. 
We took a statistical approach to estimate soil-to-plant transfer factor of stable Se (TFSe), as a natural analogue of radioactive Se, from selected soil and crop properties as listed in Table 1. TFSe is defined as the ratio of the Se concentration in plant to that in soil. For this
study we used a database for soil and crop samples collected from 143 agricultural fields (63 paddy  and 80 upland fields) throughout Japan. TFSe values ranged from 9.5*10^-3 to 2.9*10^-1 (geometric mean (GM) = 6.3*10^-2) for paddy samples and from 2.8*10^-3 to 3.0*10^-1 (GM = 2.3*10^-2) for upland samples. We applied a multiple linear regression analysis in order to get an empirical equation to estimate the TFSe. The TFSe could be estimated from three properties, such as the total carbon content in soil (Csoil-C), potassium concentration in crop (Ccrop-K), and zinc concentration in crop (Ccrop-Zn). A good correlation between observed and estimated TFSe with determination coefficient R of 0.68 was found., Selenium 2010},
 title = {Estimation of plant uptake of selenium from soil using soil and crop properties in Japanese agricultural fields},
 year = {2010}
}