scholarly journals Composition of organic-mineral complexes (OMC) migrating in the reclaimed sod-podzolic soils (Umbric Albeluvisol Abruptic)

2020 ◽  
Vol 224 ◽  
pp. 04012
Author(s):  
A V Litvinovich ◽  
O Yu Pavlova ◽  
A V Lavrishchev ◽  
A. A. Belimov
Keyword(s):  
Carbon Content ◽  
Optical Density ◽  
Fulvic Acids ◽  
Soil Minerals ◽  
Destructive Effect ◽  
Podzolic Soils ◽  
Organic Mineral ◽  
Density Index ◽  
Optical Density Index ◽  
Range Of Values

The composition of organo-mineral complexes (OMC) migrating from the arable horizon limed by Umbric Albeluvisol Abruptic was studied. The carbon content in organic-mineral complexes (OMC) ranged from 5.5 to 5.7%. The optical density index (Esmg/ml) varied in the range of values from 2.7 to 3.1, characteristic for fulvic acids (FA). It was established that FAs averaged with bases retain the ability to exert a destructive effect on soil minerals, transferring a significant amount of Al, Mn, and Fe into solution. According to their ability to migrate as part of OMC, the elements studied in the experiment with dolomite particles at a dose of 7.35 t/ha were arranged in the following decreasing sequence: Mn > Al > Fe. In the experiment with conversion chalk (CC) at a dose of 20.25 t/ha, this sequence was Al > Mn > Fe.

Optical density of bone tissue in the dynamics of therapy of professionally caused osteopathies of the shoulder joint

2020 ◽  
pp. 620-620
Author(s):  
V. N. Druzhinin ◽  
V. G. Suvorov ◽  
A. E. Shelekhova
Keyword(s):  
Bone Tissue ◽  
Optical Density ◽  
Bone Mineral ◽  
Shoulder Joint ◽  
Primary Diagnosis ◽  
Density Index ◽  
Optical Density Index

Optical density index can be a criterion of bone mineral saturation, both at the stage of primary diagnosis and in the dynamics of observation of patients with shoulder periarthrosis and osteoarthritis of the shoulder joint.

scholarly journals Plasmalyte: No Longer a Culprit in Causing False-Positive Galactomannan Test Results

2015 ◽  
Vol 54 (3) ◽  
pp. 795-797 ◽  
Author(s):  
Isabel Spriet ◽  
Katrien Lagrou ◽  
Johan Maertens ◽  
Ludo Willems ◽  
Alexander Wilmer ◽  
...  
Keyword(s):  
Optical Density ◽  
False Positive ◽  
Test Results ◽  
Density Index ◽  
Optical Density Index

False-positive galactomannan (GM) results have been reported in patients treated with gluconate-containing solutions, such as Plasmalyte. The GM optical density index was tested on 33 distinct batches of Plasmalyte and was found to be negative in all of the batches, confirming that Plasmalyte is no longer a cause of false-positive GM results.

scholarly journals Agro-Environmental Rationale of Sewage Sludge Processing and Application

2020 ◽  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Crop Yields ◽  
Conservation Agriculture ◽  
Fulvic Acids ◽  
Black Soil ◽  
Point Of View ◽  
Total Carbon ◽  
Mineral Fertilizers ◽  
Organic Mineral

Conservation agriculture is becoming a priority for Ukraine as well as for many countries of the world. It is a known fact that high content of heavy metals in the soil impairs fertility and carries the risk of crops translocation. An agroecological effect of obtaining and applying organic-mineral fertilizers has been insufficiently studied so far. The purpose of the work is to determine possibilities to produce new organic-mineral fertilizers based on sewage sludge with enhanced adsorbing properties, to establish their agroecological efficiency. Methods. Field, laboratory-analytical, statistical-mathematical. Results. From the agroecological point of view, the production process of organic-mineral fertilizers based on the sewage sludge of Kharkiv is justified. It allows us to expand functional capabilities of reagents, enhancing adsorbing properties of heavy metals. It is proved the advantage of organic-mineral fertilizers over the traditional ones on chernozem typical. After fertilization, the content of total carbon in the soil increased, the content of humic acids increased by 1,5 – 2,8 times, fulvic acids – by 1,1 – 1,7 times, the total sum of humic substances – by 1,3 – 2,1 times compared with no fertilizer option. It is established that application of organic-mineral fertilizers promotes blocking of heavy metals in soil and prevents translocation to plant. Maximum yields of corn were obtained after the local application of granular organic-mineral fertilizers – the yield increase was 41% compared to the control, after introduction of bulk fertilizers – 32% compared to the control. Profit was $ 23 -36 per hectare. Conclusions. The process of organic-mineral fertilizers production on the basis of sewage sludge in Kharkiv is substantiated from the agro-ecological point of view. Agroecological and agrochemical efficacy of sewage sludge use as compared to organic and mineral fertilizers applied in equivalent doses separately was established on the typical heavy loam chernozem. After introduction of organic-mineral fertilizers based on sewage sludge a significant increase in the concentration of trace elements and heavy metals was found in the black soil but these indicators did not exceed the established maximum permissible concentrations. The implementation of the proposed technology will reduce bioavailability of heavy metals and their mobility in the soil which, in turn, impedes their accumulation in products. It is expected to increase soil fertility, crop yields and obtain environmentally friendly and safe products due to the stable composition of innovative fertilizers.

Evaluation of the Growth Performance of Microalgae Based on Fine pH Changes

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Filali R ◽  
◽  
Tian H ◽  
Micheils E ◽  
Taidi B ◽  
...  
Keyword(s):  
Growth Rate ◽  
Carbon Content ◽  
Specific Growth ◽  
Optimal Growth ◽  
Microalgae Cultivation ◽  
Photoautotrophic Growth ◽  
Microalgae Culture ◽  
Potential Applications ◽  
Photosynthetic Microorganisms ◽  
Range Of Values

Microalgae are photosynthetic microorganisms with many potential applications in the food, cosmetics, pharmaceutical and environmental industries. Currently, commercial microalgae production remains limited. Therefore, improving the growth and the culture density of the microalgae cultivation is one of the key enablers to open the way to mass production and commercialisation of these microorganisms. The effect of culture pH on the photoautotrophic growth of C. vulgaris over a large range of values has been investigated in pH-regulated cultures. For each microalgae culture, the specific growth rate, the cell density, the chlorophyll content, the intracellular carbon content and the nitrogen source consumption were monitored. Optimal growth and carbon incorporation have been observed at pH of 7.0. The fastest growth rate and highest biomass production of C. vulgaris were 0.074 h-1 and 0.896 g/L respectively. Under these conditions, a maximum carbon content of cells was 49 % (w/w).

scholarly journals BIOLOGICAL TRANSFORMATION OF THE ORGANIC SUBSTANCE IN THE SODPODZOLIC SOIL UNDER THE INFLUENCE OF FERTILIZATION SYSTEMS AND MICROBIAL PREPARATIONS

2017 ◽  
Vol 26 ◽  
pp. 30-36
Author(s):  
L. V. Potapenko ◽  
L. M. Skachok ◽  
N. I. Horbachenko
Keyword(s):  
Organic Substance ◽  
Agricultural Crops ◽  
Long Term Effects ◽  
Mineral Fertilization ◽  
Podzolic Soils ◽  
Organic Mineral ◽  
Biological Transformation

The influence of microbial preparations on the processes of biological transformation of organicsubstance in sod-podzolic soils under the long-term effects of various fertilization systems has beeninvestigated. It has been established that organic-mineral fertilization systems in the technologies ofcultivating agricultural crops and the use of microbial preparations are appropriate for replenishing thesoil with the required amount of organic substance.

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 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 Haplic chernozems humus condition of Western Bug and Styr terraced landscapes

2016 ◽  
pp. 296-308
Author(s):  
Pavlo Papish ◽  
Halyna Ivanyuk ◽  
Ihor Papish
Keyword(s):  
Organic Matter ◽  
Clay Minerals ◽  
Optical Density ◽  
Humic Acids ◽  
Fulvic Acids ◽  
Soil Thickness ◽  
Humus Profile ◽  
Haplic Chernozems ◽  
High Degree ◽  
Very High

Volyn Upland Haplic Chernozems are distributed mainly on the terrace landscapes of the Western Bug and the Styr and their tributaries (Chornohuzka, Luha, Lypa). Most of these soils are old ploughlands that have experienced various types of degradation. Haplic Chernozems are low-humus soils and they have low storages of humus substance in the 20 cm arable layer and middle storages of humus in 100 cm soil thickness. There is correlation of C humic acids to C fulvic acids within 1.2–3.3 in the humus profile. Among the various fractions of humic substances the 2nd fraction associated to Calcium dominates. A content of “free” humic acids (1rst fraction) is very low and the amount of humin is low. The optical density of humic acids ( 0,001% НА Е1 cm, 465 nm ) are high and very high. The organic matter of Volyn Upland Haplic Chernozems has some regional peculiarities. First, it caused by topographical conditions of its formation and evolution in the Holocene. Chernozems of the 1st terrace of the River Western Bug are extremely deep. They have progressive-accumulative type of humus distribution in profile, humate type of humus in upper 100 cm layer, a very high degree of organic matter humification and the same content of humic fraction associated to Calcium and lowmiddle content of 3rd fraction associated to clay minerals. The molecules of humic acids in the humus horizon of Chernozems of the 1rst terrace are better structured that indicates the older age of humus in these soils. Chernozems of the 2nd terrace above the floodplain of the River Styr are middle-deep soils. They are characterised by the regressive-accumulative type of humus distribution in profile, humate-fulvate type of humus and very high degree of organic matter humification only in 25–50 cm layer. The content of fractions associated to Calcium and clay minerals is predominantly high. Key words: Haplic Chernozems, humus, humic acids, fulvic acids, optical density, humus condition.

scholarly journals Changes in agrochemical indicators in an agricultural landscape with sod-podzolic soils against the background of the use of non-traditional fertilizers

2021 ◽  
Vol 937 (2) ◽  
pp. 022053
Author(s):  
E V Chebykina ◽  
P A Kotyak ◽  
T V Taran ◽  
A N Voronin
Keyword(s):  
Agricultural Landscape ◽  
Plant Protection ◽  
Poultry Manure ◽  
Chicken Manure ◽  
Stationary Field ◽  
Podzolic Soils ◽  
Organic Mineral ◽  
Negative Effect ◽  
Intensive Development ◽  
Poultry Farming

Abstract The results of changes in agrochemical indicators in an agricultural landscape with sod-podzolic soils against the background of the use of non-traditional fertilizers in the Yaroslavl region are presented. A consequence of the intensive development of poultry farming and greenhouse farming in the region is not only an increase in the volume of basic products, but also the accumulation of production waste, such as poultry manure in poultry farming and used mats of the greenhouse economy. Both types of waste are environmentally hazardous and require special care when disposing of them. One of the options for solving the problem may be the processing of waste into a granular organic-mineral substrate. Evaluation of the effectiveness of the use of unconventional fertilizers was carried out in a 3-factor stationary field experiment while simultaneously studying the systems of basic soil cultivation and plant protection. The studies have shown that the developed organomineral fertilizer, created from waste chicken manure and mineral mats, does not have a negative effect on the agrochemical indicators of soil fertility and can be recommended for production.

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