Humus condition of brownish-podzolic soils of the Pregorganian Precarpathians

2020 ◽  
Vol 99 (1-2) ◽  
pp. 37-44
Author(s):  
Stepan Malyk ◽  
Zinoviy Pankiv
Keyword(s):  
Humus Content ◽  
Total Content ◽  
Fulvic Acids ◽  
Illuvial Horizon ◽  
Joint Movement ◽  
Podzolic Soils ◽  
Fine Soil ◽  
Humus Composition ◽  
Profile Distribution ◽  
Soil Forming Processes

The indicators of humus condition reflect not only the productivity of soils, but also the features of the genesis, intensity and direction of soil-forming processes. It was found that the brownish-podzolic soils of the Pregorganian Precarpathian region are characterized by a low content of humus (1 36-3.7%) within the NE gl horizon, and in the lower horizons its content decreases sharply. Profile distribution of humus is determined as regressive-accumulative type, which is typical for most soils with elluvial-illuvial type of profile. The content of humus in the silty fraction of the studied soils is 1.5-2.0 times higher in comparison with the fine soil, and within I (e) m gl of the horizon the accumulation of humus is established, which is due to the lessivage process. Brown-podzolic soils are characterized by fulvate type of humus (C ha: C fa = 0.2-0.5). The movement of fulvic acids within the profile, especially organo-mineral colloids, is caused by the lessivage process. Among fulvic acids, the fraction connected with the mineral part (FC-3) has the highest content, which increases with the depth from 17.6 to 35.1%. The enhance in the content of this fraction with depth is primarily due to the ability to migrate within the profile. It can cause both the movement of fulvic acids deep into the profile with their sorption on peptizing colloids, and the joint movement of organo-mineral peptized colloids in the profile. The highest level of humification (28.10–28.75%) have upper humus-elluvial horizons, because they create the best conditions for the intensive activity of microorganisms. The humus content in clay cutans is 1.5 times higher than in the contained illuvial horizon, which is caused by lessivage and clay granulometric distribution. The humus content in the nodules is lower (0.26%) in comparison with the contained horizon. The results of the optical density analysis indicate a decrease in the extinction index from NE g1 to I (e) m gl of the horizon, which correlates with the indicators of the profile distribution of humic acids, the total content of which decreases with the depth. Such characteristics of humus composition indicate the genetic affinity with brown forest soils.

scholarly journals CALCIUM IN SOIL HUMUS OF WEST-SIBERIAN TRANSECT

2020 ◽  
Vol 4 (2) ◽  
pp. 64-70
Author(s):  
Boris M. Klenov ◽  
Mikhail V. Yakutin
Keyword(s):  
Total Content ◽  
Calcium Content ◽  
Fulvic Acids ◽  
Ecological Stability ◽  
Environmentally Sustainable ◽  
Nontraditional Method ◽  
Humus Composition ◽  
Main Components ◽  
Zonal Soils

The paper analyzes the behavior of one of the main components of humus (humic acids - calcium system) depending on the participation of calcium in the biological cycle of substances. The role of calcium in the formation of ecological stability of humic systems is shown, which largely determines the environmentally sustainable agriculture. It is shown that the changeable calcium amounts to no more than a half of its total content in humus horizon of automorphic zonal soils. Within the limits of the transect, the participation of calcium in binding of humic and fulvic acids is distributed according to their content in humus composition. Additional assessment of exchangeable calcium content to be determined by nontraditional method showed the same geographic regularity of its distribution in the soils of the transect as in the case of distribution of the main characteristics of humus.

Regime of soil humus rural residential areas organic farming systems

2018 ◽  
Vol 2 (95) ◽  
pp. 78-81
Author(s):  
L.I. Shkarivska
Keyword(s):  
Organic Farming ◽  
Rural Areas ◽  
Humus Content ◽  
Farming Systems ◽  
Farming System ◽  
Organic Substrates ◽  
Residential Areas ◽  
Typical Chernozem ◽  
Podzolic Soils ◽  
Organic Farming System

The changes of the soil’s humus soil within the rural areas are investigated for the organic farming system. The most significant impact of organic agriculture on humus content over 55% was observed on soddy podzolic soils (V>75%), the lowest –7,5% on typical chernozem (V≈16%). Changes in the qualitative composition of humus for the introduction of various types of organic substrates are analyzed.

scholarly journals Ground-exploring routes of the Volyn region

2017 ◽  
pp. 179-192
Author(s):  
Pavlo Kucher ◽  
Ivan Voloshyn ◽  
Andrii Kukhtiy
Keyword(s):  
Chemical Properties ◽  
Soil Science ◽  
Soil Conditions ◽  
Natural Soil ◽  
Peat Bogs ◽  
Forest Steppe ◽  
Podzolic Soils ◽  
Typical Chernozems ◽  
Soil Forming Processes ◽  
Soil Distribution

The article highlights the features of conducting soil excursion cognitive routes. We have proposed a comprehensive cognitive route for tourists of various degrees of educational level: schoolchildren and students of natural sciences. For each type of tourists, according to their wishes, information on natural features, soil cover and other excursion facilities are provided. Complex excursions are offered to attract more tourists. It is proposed to include in excursion routes: monuments and memorable places, architectural, archaeological, historical, sacral, museum and other valuable tourist objects. The excursion route in the Volyn region consists of eight soil study areas, where information is provided on the natural soil conditions, the most common types of soils, including gray forest soils, typical chernozems, sod-podzolic soils, peat soils and peat bogs. Two soils study areas are located on the forest-steppe area, where information on the main types of soils, their granulometric composition, and chemical properties are highlighted. The third-eighth field is laid within Volyn Polissya. Based on the study of the features of soil distribution, a soil-cognitive tourism route within the limits of the Forest-steppe and Volyn Polissya has been developed. The tour consists of information on the natural features of this territory, which testify to the conditions of the soil-forming processes, depending on the characteristics of natural conditions. During the soil study route, the peculiarities of distribution of the main types of soils and soil-forming rocks are highlighted. A table is prepared, in which a brief description of all types of soils found on the route and interesting tourist objects is located. Key words: soil, soil science cognitive field, tourist object, soil science route.

scholarly journals Ferum concretions in the soils of the Lviv region

2017 ◽  
pp. 256-266 ◽  
Author(s):  
Zinoviy Pankiv ◽  
Olena Iliasevych ◽  
Stepan Malyk
Keyword(s):  
Unsaturated Soils ◽  
Podzolic Soil ◽  
Soil Material ◽  
Profile Distribution ◽  
High Level ◽  
Soil Forming Processes ◽  
Reducing Potential ◽  
Main Factor ◽  
Brown Color

It is established that ferum concretions can be observed in 60 % area of Lviv’s oblast’s and represented by brown spots, pseudophybras, ortsteins, ortzanders, nodules, layers of marsh ore. In acidic unsaturated soils of Male Polissya, Nadsanya, Precarpathians ferum concretions is the basis for diagnosing soil-forming processes and their genesis. The main factor of ferum concretions formation is the dynamics of oxidation-reducing potential. Fe-Mn pedofetures (ortsteins) dominated in the sodpodzolic gleyed soils of Malogo Pollisya, Nadsanya and in the sod-podzolic pseudogleyed soils of the Precarpathians. Their profile distribution and morphological features. Were established nodules (solid concretions of a dark brown color with a gray tint, irregular shape and with diffuse outlines) were diagnosed within the EI horizon of the brown-podzolic soil of the Precarpathians. Found features of nodules testify about the genesis of in situ. Sod glesish soils of Male Polissya, Precarpathians, valleys Pasmovogo Pobyzzya are characterized by ferum concretions of a dense consistency, a dark brown color with diffuse outlines, which are formed in horizons with long saturation of water due to cementation with soil material of oxides Fe, Al, Mn, Si. Ferum concretions are characterized by maximum accumulation of iron compound (Кх=7,21). Ortzanders and pseudophybras - glandular hydrogenated cemented neoplasms formed are within the profi les of sod pinewood soils of Male Polissya, Nadsanya which were formed on the water-glacial deposits and sod soils in the Davudiv range, formed on Neogene sands on the conditions of high level ironization of ground water and pulsating regime. Little attention is paid to the study of ferum concretions in the soils, which is a significant disadvantage in the study of the genesis of hydromorphic soils. In order to establish the genetic nature, of ferum concretions it is advisable to use modern methods of scanning electronic microscopy, mineralogical and micromorphological studies. Key words: ferum concretions, Fe-Mn pedofetures, ortsteins, nodules, soils.

scholarly journals Mobile Forms of Gold and Pathfinder Elements in Surface Sediments at the Novye Peski Gold Deposit and in the Piilola Prospecting Area (Karelia Region)

Minerals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 34 ◽  
Author(s):  
Vera Korshunova ◽  
Marina Charykova
Keyword(s):  
Organic Matter ◽  
Gold Deposit ◽  
Surface Sediments ◽  
Gold Mineralization ◽  
Total Content ◽  
Fulvic Acids ◽  
Water Soluble ◽  
Mobile Form ◽  
Mobile Forms ◽  
Pathfinder Elements

The success of prospecting for gold deposit in overburdened areas based on the using of secondary dispersion haloes mostly depends on the chosen method of geochemical survey (sampling horizon, sample preparation for analysis, etc.). At the same time, the geochemistry of gold in the supergene zone is insufficiently studied, especially it’s migration and concentration in association with other elements in surface sediments due to weathering of gold-bearing ore. The main aim of the study presented in this paper is the determination of mobile forms of gold and pathfinder elements (As, Cu, Ni, Ag, Zn, Pb, Se, Sb, Mo, Bi, and Te) in podzol soil and moraine in the areas of Karelia region with known gold mineralization. As a result of conducted experiments it was determined that the main mobile forms of gold are water-soluble and bound to organic matter, while pathfinder elements bound preferably to Fe and Mn(hydr)oxides and to organic matter. As gold and some pathfinders bind with organic matter, this form was considered in more detail, and the elements’ interaction with humic and fulvic acids was investigated. In addition, it was determined that the studied elements are quite “mobile” because the percentage of the mobile form in their total content was mostly more than 50%. The main features of the elements’ migration and concentration were identified in surface sediments of the study areas.

scholarly journals Effects of Returning Granular Corn Straw on Soil Humus Composition and Humic Acid Structure Characteristics in Saline-Alkali Soil

2020 ◽  
Vol 12 (3) ◽  
pp. 1005
Author(s):  
Xiaodong Chen ◽  
Jinggui Wu ◽  
Yaa Opoku-Kwanowaa
Keyword(s):  
Humic Acid ◽  
Structural Characteristics ◽  
Block Design ◽  
Humus Content ◽  
Corn Straw ◽  
Soil Humus ◽  
The Sustainable Development ◽  
Alkali Soil ◽  
Randomized Block Design ◽  
Humus Composition

Returning straw plays an important role in protecting the environment and maintaining the sustainable development of agriculture. In this research, we explored the effects of returning granular corn straw on soil humus composition and humic acid structural characteristics in a typical saline-alkali soil. This study was conducted in Jilin province. A randomized block design consisting of nine plots with three treatments in three replicates was used for this study. The treatments were granular corn straw (GS), coarse corn straw (CS), and control (CK). The results show that treatments GS and CS both increased the contents of soil humus and its components in the soil compared to CK. However, treatment GS recorded the highest significant increase in soil humus carbon (HEC), fulvic acid carbon (FAC), and humic acid carbon (HAC) by 17.59%, 8.32%, and 26.51%, respectively. Comparing the two straw treatments, it was found that the relative intensities of treatment GS at 2920 and 2850 cm−1 were higher than treatment CS by 1.58% and 72.49%, respectively. The relative intensities of treatment GS at 1720 cm−1 and 1620 cm −1 were lower than treatment CS by 52.2% and 30.43%, respectively. Moreover, an analysis of soil humic acid (HA) through an infrared spectrum, fluorescence spectrum, and principal components analysis (PCA) showed that the application of straw makes the structure of HA aliphatic, simple, and younger, and also promotes the continuous renewal of humus. In this study, the application of granular corn straw effectively improved the soil humus content and humic acid structural characteristics and is thus highly recommended.

scholarly journals Chemical nature of soil humified fractions and their bioactivity

2004 ◽  
Vol 39 (3) ◽  
pp. 233-240 ◽  
Author(s):  
Luciano Pasqualoto Canellas ◽  
Arnoldo Rocha Façanha
Keyword(s):  
Humic Substances ◽  
Chemical Nature ◽  
Biochemical Marker ◽  
Soil Depth ◽  
Fulvic Acids ◽  
Soil Samples ◽  
Humic And Fulvic Acids ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Maize Roots ◽  
Humus Composition

The aim of this work was to evaluate the humus composition from an Ultisol from Campos dos Goytacazes, RJ, Brazil. Soil samples of four depths (0-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m) and its chemical nature were analysed by elemental composition, E4/E6 ratios and Fourier transformed infrared spectroscopy. The bioactivity of these humified substances was evaluated through their action on maize root growth and H+-ATPase activity of roots microsomes. In topsoil, the content of high condensed alkaline soluble humic substances is greater than that found in the subsuperficial layers. The chemical nature of humic and fulvic acids also varied with the soil depth. The humic acids isolated from the soil samples exhibited higher bioactivity compared with the fulvic acids. Moreover, the results suggest that more condensed humic substances can promote highest stimulation of the microsomal H+-ATPases from maize roots. These data reinforce the concept that the activity of the H+ pumps can be used as a biochemical marker for evaluation of humic substances bioactivity.

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