scholarly journals Ratio of elements in humic acids extracted from restored mine soil as a measure of quality of carbon sequestered

2020 ◽  
Vol 8 (6) ◽  
pp. 1343-1346
Author(s):  
Preeti Singh ◽  
AK Ghosh
Keyword(s):  
Humic Acids ◽  
Mine Soil

scholarly journals Effects of Different Humic Acids on Growth and Fruit Quality of Tomato Plant

2007 ◽  
Vol 26 (4) ◽  
pp. 313-318 ◽  
Author(s):  
Hong-Gi Kim ◽  
Dong-Cheol Seo ◽  
Yong-Hwa Cheong ◽  
Chang-Sun Kang ◽  
Bo-Kyoon Sohn ◽  
...  
Keyword(s):  
Humic Acids ◽  
Fruit Quality ◽  
Tomato Plant

scholarly journals Properties of Humic Acids in Meadow Soils Irrigated With the Slope-And Flooding System

2021 ◽  
Author(s):  
Magdalena Banach-Szott ◽  
Andrzej Dziamski
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Organic Carbon ◽  
Humic Acids ◽  
Soil Samples ◽  
Hydrophobic Properties ◽  
Irrigation Ditch ◽  
Ft Ir ◽  
Degree Of Maturity

Abstract The aim of the research has been to determine the effect of many-year irrigation of unique grasslands on the properties of humic acids defining the quality of organic matter. The research was performed based on the soil (Albic Brunic Arenosol, the A, AE and Bsv horizons) sampled from Europe’s unique complex of permanent grasslands irrigated continuously for 150 years, applying the slope-and-flooding system; the Czerskie Meadows. The soil samples were assayed for the content of total organic carbon (TOC) and the particle size distribution. HAs were extracted with the Schnitzer method and analysed for the elemental composition, spectrometric parameters in the UV-VIS range, hydrophilic and hydrophobic properties and the infrared spectra were produced. The research results have shown that the HAs properties depended on the depth and the distance from the irrigation ditch. The HAs of the A horizon of the soils were identified with a lower “degree of maturity”, as reflected by the values of atomic ratios (H/C, O/C, O/H), absorbance coefficients, and the FT-IR spectra, as compared with the HAs of the Bsv horizon. The HAs molecules of the soils sampled furthest from the irrigation ditch were identified with a higher degree of humification, as compared with the HAs of the soils sampled within the closest distance. The results have demonstrated that many-year grassland irrigation affected the structure and the properties of humic acids.

Humus Substances and Soil Structure

2012 ◽  
Vol 63 (3) ◽  
pp. 31-36
Author(s):  
Erika Tobiašová ◽  
Juraj Miškolczi
Keyword(s):  
Humic Acids ◽  
Soil Structure ◽  
Size Fraction ◽  
Fulvic Acids ◽  
Optical Parameters ◽  
Humus Substances ◽  
Haplic Chernozems ◽  
Positive Correlations ◽  
The Stability

Abstract In this study, the soil structure of two soil types (Haplic Chernozems and Eutric Fluvisols) in four ecosystems (forest, meadow, urban and agro-ecosystem) with dependence on humus substances were compared. The stability of dry-sieved and waterresistant macro-aggregates and micro-aggregates with a dependence on the proportion of humus substance fractions was determined. Quantity of humus substances influenced mainly water-resistant aggregates. A positive correlation was recorded between size fraction of 2.3 mm and contents of humus substances (P < 0.01; r = +0.710) and fulvic acids (P < 0.05; r = +0.634), and negative correlation between size fraction of 0.5.1 mm and contents of humus substances (P < 0.05; r = -0.613) and fulvic acids (P < 0.01; r = -0.711). Humic acids influenced mainly the formation of dry-sieved aggregates and fulvic acids played an important role in micro-aggregate formation. The quality of humus substances influenced more intensively the formation of dry-sieved aggregates. There were positive correlations between optical parameters of humus substances and humic acids and larger dry-sieved aggregates (3.7 mm) and negative correlations with smaller (0.5.3 mm). The highest proportions of larger size of water-resistant aggregates (1. 20 mm) were in forest ecosystem, but smaller (0.25.1 mm) agreggates were dominated in agro-ecosystem.

scholarly journals The Influence of Natural and Model Forms of Humic Acids on the Dynamic Parameters of Model Membranes

2016 ◽  
Vol 23 (4) ◽  
pp. 695-708
Author(s):  
Izabella Pisarek ◽  
Barbara Pytel ◽  
Aneta Filipiak ◽  
Grzegorz Engel ◽  
Ryszard Olchawa ◽  
...  
Keyword(s):  
Surface Layer ◽  
Humic Acids ◽  
Dynamic Properties ◽  
Egg Yolk ◽  
Electrical Parameters ◽  
Bilayer Membranes ◽  
Membrane Models ◽  
Carl Roth Gmbh ◽  
Electrical Study

Abstract In this paper the influence of humic acid concentrations extracted from Histosols (HA-A) and their model forms (HA-B) separated from humic substances commercially produced by Carl Roth GmbH + Co.KG on the dynamic properties of liposome membranes was determined. Differences in the quality of the humic acids (HA-A and HA-B) were determined by the 1HNMR and FTIR methods. Liposomes from the sonication of egg yolk lecithin (EYL) in an aqueous solution and synthetic Dipalmitoylphosphatidylcholine (DPPC) were used. Fluidity of liposome membranes was determined by the EPR technique with spin probes (TEMPO, 16DOIXYL). The electrical parameters of membranes were found using a Keithley 6517 electrometer. Our study showed significant differences in the influence of HA-A and HA-B on the membranes. In the bilayer membranes of the liposomes of HA-A admixture there was slightly more stiffening of the interior of the membrane in comparison to HA-B. A similar effect was observed in the surface layer of the liposome membranes. This difference is particularly evident for DPPC liposomes, however, the EYL liposomes admixture with HA-B slightly increased the fluidity of the surface layer. Electrical study confirmed this effect. The study shows that natural and model forms of humic acids differ in their effects on the activity of tested membrane models. The strong differences in the interaction of HA-A and HA-B on parameter F in DPPC liposomes can be result from the transport of humic acids connected to the metal ions inside the membranes (xenobiotics present in the environment).

scholarly journals CHANGES IN THE CONTENT AND QUALITY OF ORGANIC MATTER IN AGRARIAN SOILS OF NON-CHERNOZEM ZONE DEPENDING ON ANTHROPOGENIC IMPACT

2010 ◽  
pp. 13-22
Author(s):  
N. Ismagilova
Keyword(s):  
Organic Matter ◽  
Optical Density ◽  
Humic Acids ◽  
Humus Content ◽  
Fulvic Acids ◽  
Black Soil ◽  
Organic Fertilizers ◽  
Optimal Interval ◽  
Humus State

On the basis of experimental and literary data the assessment of humus state of arable layer of differently cultivated typical agrarian-grey heavy loamy non-eroidated soils of the center of the Non-Black Earth zone of Russia was carried out. The gradations of humus content corresponding to the different level of soil fertility were determined. The optimal interval of humus content is calculated on the basis of its minimal value in non-erodized agrarian soils of the region and optimal limits of transforming organic matter. It is shown that at development of grey soils under forest in arable horizonThe content of humus, fulvic acids, mobile humic acids, extracted 0.1 n. NaOH, decreases, and the amount of humic acids associated with Ca sharply increases with the increase of their optical density and ratio to mobile humic acids to the level in agronomic black soil. Further domestication of agrarian soils on the background of systematic application of increased doses of organic fertilizers, along with increasing the content of humus, there are reverse changes in the ratio of these fractions of humic acids. At the same time, the optical density of humic acids associated with clay minerals decreases significantly, which indicates the processes of their renewal and enrichment by aliphatic structures. Criteria of difference between agrarian soils and podzolic soils and agronomic chernozems by quality of humus in arable horizon are discussed.

scholarly journals Biostimulants Based on Humic Acids, Amino Acids and Vitamins Increase Growth and Quality of Lettuce Seedlings

2019 ◽  
Vol 11 (6) ◽  
pp. 235
Author(s):  
Rubens Ribeiro da Silva ◽  
Antonio Carlos Martins dos Santos ◽  
Jefferson Santana da Silva Carneiro ◽  
Lara Couto Marques ◽  
Larissa Urzêdo Rodrigues ◽  
...  
Keyword(s):  
Amino Acids ◽  
Plant Growth ◽  
Factorial Design ◽  
Humic Acids ◽  
Lactuca Sativa L ◽  
Randomized Design ◽  
Production Research ◽  
Completely Randomized Design ◽  
The Ideal

Humic acids (HA), amino acids (AA) and vitamins can increase plant growth; however, there are still few studies that determine the ideal concentration for use in lettuce (Lactuca sativa L.) production. Research was conducted to evaluate the effects of HA enriched with sources and levels of AA and vitamins on lettuce seedlings morphology and quality. Two experiments were conducted in a completely randomized design with four replicates. The first experiment had 16 treatments, 3 &times; 5 + 1 factorial design, the first factor was betaine, glycine and proline used in the HA enrichment, and second factor five concentrations of AA (0, 0.5, 1.0, 1.5, and 2.0 g L-1), plus the control, without HA and AA. The second experiment had 21 treatments, 4 &times; 5 + 1 factorial design, the first factor was the use of four vitamins (A, E, B1 and B2) in the enrichment of HA, while the second factor was composed of five concentrations of each vitamin (0, 0.5; 1.0, 1.5, and 2.0 g L-1) plus the control, without HA and vitamins. The application of HA and HA+AA promote the improvement in the seedling&rsquo;s morphology and quality, while the application of the HA+vitamins negatively affected the morphology, reducing seedling quality.

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