Saccharides in some Japanese paddy soils
نویسندگان
چکیده
منابع مشابه
Global Fallout Technetium-99 Levels in Japanese Paddy Soils
Determination of global fallout Tc in Japanese paddy field soil sample was carried out using a simple and rapid separation method by using a TEVA resin and determination by ICP-MS. The ranges of Tc concentrations are 6 110 mBq kg dry. The Tc values obtained were usually higher than the expected value of 6 mBq kg dry which was estimated from uniform Tc distribution on the surface of the northern...
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To understand which soil chemical properties are the best predictors of CH4 production in rice paddy soils, a model was developed with empirical data from nine types of rice soils collected around Japan and anaerobically incubated at 30 degrees C for 16 wk in laboratory conditions. After 1, 2, 4, 8, and 16 wk of incubation, CO2, CH4, and Fe(II) were measured to understand soil organic matter de...
متن کاملComparison of pedogenic properties of some paddy and nonpaddy soils of southern Iran
ABSTRACT- Paddy soils make up the largest anthropogenic wetlands on earth. Present study was performed to investigate and compare soil formation of paddy soils with long-term rice cultivation history with non-paddy soils and study the effect of waterlogging on soil pedogenesis. Soil samples were taken from paddy and non-paddy soils derived from the same calcareous parent materials. Some pedogen...
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Rice is one of the most important food crops in the world. All isotopes of technetium (Tc) are radioactive, and the environmentally most important one is 99 Tc because of its very long half-life (2.1x10 5 years) and relatively high 235 U-fission yield [1,2]. Accordingly, it is one of the critical radionuclides in an environmental impact assessment for radioactive waste disposal. A significant a...
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A laboratory study was conducted to investigate the mineralization of metsulfuron-methyl (MSM) in paddy soils in response to soil moisture, temperature and soil properties. The results indicated that MSM mineralization was relatively limited in the paddy soils when soil temperature was low. Only 2.2-6.0% of the applied (14)C mineralized after 84d of incubation at 15 degrees C. The mineralizatio...
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ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1977
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1977.10433066