Biophysicochemical properties of the eroded southern chernozem (Trans-Ural Steppe, Russia) with emphasis on 13C NMR spectroscopy humic acids | Azamat Suleymanov, Vyacheslav Polyakov, Mikhail Komissarov, Ruslan Ilyusya Gabbasova, Timur Garipov, Irik Saifullin, Evgeny Abakumov Agricultural Journals

A laboratory microcosm experiment was conducted to determine whether the earthworm Eisenia fetida could survive in a saline soil from a field site in North China, and an experiment using response surface methodology was conducted at that field site to quantify the effects of E. fetida and green waste compost (GWC) on the salt content of the soil. The microcosm results showed that E. fetida surv...

subsequent accretion of layers of the complexes might represent a combination of chemical and physical proSince twice as much C is sequestered in soils as is contained in the tection from enzymes. atmosphere, the factors controlling the decomposition rate of soil C are important to the assessment of the effects of climatic change. Humic substances are operationally defined, but have The formati...

Comparison of two commonly used techniques for molecular weight determination of natural organics, ultrafiltration (UF) fractionation and high-performance size exclusion chromatography (SEC), shows that neither technique gives absolute measures of molecular weight. Investigations of International Humic Substances Society standard humic and fulvic acids as well as natural organic matter concentr...

The effect of management practices on soil potential for regulating the residual concentration of pesticides was examined in samples from a Calcic Haploxeralf in Toledo (central Spain). Sorption-desorption of alachlor and linuron was found to depend on inputs of lignocelullosic wastes or cattle manure for the past 16 years. For a given herbicide, the soil sorption capacity (K(f)) follows the or...

Humic substances are defined as the result of decomposition any organic matter, and they consist mainly humin, humic, fulvic acids. Compared to humic acids acid (FA) most explored compounds. However, FAs less studied than because usually small residual quantities. Considering that its potential for bioactivity is stronger acids, current review was performed evaluate effectiveness FA application...