Biochar exhibits a profound impact on soil organic carbon (SOC) turnover and dynamics, but the underlying mechanism under field conditions is still unclear. A three-year experiment was performed to evaluate of peanut shell biochar applied at rates 0, 33.75, 67.5, 101.25 t/ha (referred as B0, B1, B2, B3, respectively) SOC content chemical composition in saline-sodic paddy using stable isotope 13...

Brassicaceae products have been extensively studied for their biofumigant activity; despite this, few investigate effect on soil proprieties. This paper aims to describe the fertility by adding seed meal of Brassica carinata at three different doses corresponding field dose (3 tons/ha), 10 and 100 fold this in organic soil. The carbon balance was evaluated analysing oxidisable, humified mineral...

In order to unravel the effect of aerated irrigation on soil dissolved organic matter (DOM) fluorescence characteristics, and humification degree, a randomized block experiment was conducted with three factors two-level design, i.e., two rates (0.6 1.0 times crop evaporation pan coefficient, W1 W2), nitrogen application (225 300 kg hm−2, N1 N2), aeration (15% 0% in control treatment, A1 A0). Fl...

Humic substances are generally seen as important soil and natural water components. They are formed during humification of organic matter by soil microorganisms. Humic substances are a mixture of complex organic compounds that are usually separated into three fractions: humic acids, fulvic acids and humins. The properties of humate products on the market depend on the ratios between these fract...

The deep geothermal water found within Kaifeng City, Henan province, China, is mainly contained a loose-pore reservoir in the Minghuazhen Formation (Neogene Period). To understand role and composition of Dissolved Organic Matter (DOM) water, samples collected from 13 wells at different depths were studied using three-dimensional (3D) excitation-emission matrix-parallel factor (EEM-PARAFAC) anal...

Selenium is a trace element and an essential nutrient. Its long-lived radioisotope, selenium 79 of potential radio-ecological concern in surface environment deep geological repository for high-level radioactive waste. In this study, the influence environmental, climatic geochemical conditions on stable Se (as surrogate 79Se) accumulation was statistically assessed (PCA analysis, Kruskall-Wallis...

Skeletonema dohrnii is a common red tide microalgae occurring in the coastal waters and throughout world. The associated heterotrophic or autotrophic bacteria play vital roles regulating algal growth, production, physiology. In this study, we investigated detailed bacterial community structure with growth of S. dohrnii’s using high-throughput sequencing-based on 16S rDNA. Our results demonstrat...

Humic acid (HA), as an important by-product, has been demonstrated to affect anaerobic digestion performance and subsequent land application of digestate via the batch process. However, knowledge about evolution structure function HA during continuous (AD) is still unclear. Therefore, current study examined structural changes in produced AD process its metal-adsorption-reduction abilities. The ...

This study aims to assess the characteristics of humic acids (HAs) in floodplain soils. HAs were isolated from Fluvisols located out embankment riparian forest (unflooded forest) and within (inter-embankment), area periodically flooded. these soils examined for quantity, structure, humification degree using extraction methods as well elemental analysis, UV-Vis, FTIR, EPR, 1HNMR spectroscopies. ...

Boone, 1994). Despite these efforts, no single fractionation method has been shown to cleanly distinguish Nitrogen mineralization in irrigated lowland rice (Oryza sativa L.) SOM fractions based on their contributions to soil N soils is poorly predicted by total soil C and N. To improve its prediction, two humic acid fractions were extracted with NaOH from lowland mineralization across a wide ra...