Production of Functional Rice with Germanium under Different Soil Texture in Soil Application of Germanium.

The growth characteristics and Germanium (Ge) absorption of rice plant (Hopyung) were investigated under different soil texture such as silt loam, clay loam, loam and sandy loam in pot (1/5,000a) in order to produce a functional rice with germanium (Ge) in Korea. The soil was treated with 8 mg/kg Ge. The growth status of rice plant was almost similar in all soil texture, and rice yield was higher in the order of silt loam > clay loam > loam > sandy loam. In rice gran, the Ge content in silt loam, clay loam, loam and sandy loam were 980, 868, 754 and 803 ug/pot, respectively. The Ge content of brown rice and polish rice were greater in the order of silt loam > sandy loam > clay loam > loam. In silt loam, the Ge absorption rate in leaf, stem, root, rice grain and brown rice were 19.7, 2.3, 0.03, 3.1 and 0.44%, respectively. Therefore, the optimum soil texture for production of functional rice with Ge is a silt loam.