Chloritization in lowland paddy soils
نویسندگان
چکیده
منابع مشابه
Tc in Paddy Soils Contaminated in Two Different Ways
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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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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BACKGROUND Metsulfuron-methyl is widely used for controlling many annual grasses and broadleaf weeds in cereal crops. Nonetheless, increasing evidence has demonstrated that even extremely low levels of metsulfuron-methyl residues in soil can be toxic to subsequent crops or non-target organisms. The behavior of herbicides in soils is mostly related to their residual forms. The intent of the pres...
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An understanding of the influence of flooding on electrochemical and chemical properties of paddy soils provides insight needed in their management for rice production.When an aerobic soil is submerged, its redox potential decreases during the first few days and reaches a minimum; then it increases, attains a maximum, and decreases again asymptotically to a value characteristic of the soil, aft...
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ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1974
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1974.10433233