scholarly journals Research on the Physico-Chemical Properties of Soils Locality Dobrosloveni, Olt County for Sustainable Agriculture

2021 ◽  
Vol 9 (2) ◽  
pp. 8
Author(s):  
Anca-Luiza Stănilă
Keyword(s):  
Environmental Factors ◽  
Soil Cover ◽  
Chemical Properties ◽  
Hydrological Regime ◽  
Physico Chemical ◽  
Wide Range ◽  
Low Altitude ◽  
Chemical Properties Of Soils ◽  
Direct Reflection ◽  
Pedogenetic Processes

The studied territory located in the central-western part of Olt County, belongs to the Caracal Plain and extremely little in the Leu-Rotunda Field in the SW part, both as divisions of the Romanati Plain.Locality presents a predominant relief of plain low altitude that is characterized by alluvio-proluvial plains moderately fragmented with local terraces, covered with loess-like deposit but relief of saucer.The soil cover of the territory under study is the direct reflection of all environmental factors, each having a role in the pedogenetic processes. Climate, as a pedogenetic factor, acted by its components, namely: temperature, precipitation, evapotranspiration, global radiation.Forest steppe vegetation was the supply of organic matter and biomass, because the hydrological regime is deficient, but especially the lithological substrate (loess-like complex) to steer solification to types characteristic of the cernisols class.Under the influence of environmental factors and pedogenetic processes within the locality Dobrosloveni it formed a wide range of soils, namely: protisols, cernisols, luvisols and hydrisols.

scholarly journals Research on the Physico-Chemical Properties of Soils Locality Daneasa, Olt County for Sustainable Agriculture

2020 ◽  
Vol 8 (2) ◽  
pp. 1
Author(s):  
Anca-Luiza Stănilă
Keyword(s):  
Environmental Factors ◽  
Chemical Properties ◽  
Hydrological Regime ◽  
Left Bank ◽  
Climate Conditions ◽  
Physico Chemical ◽  
Wide Range ◽  
Chemical Properties Of Soils ◽  
Direct Reflection ◽  
Pedogenetic Processes

The territory studied is situated in the South-Eastern part of Olt County, it is part of the great unit of the Romanian Plain, that is, from the subunit of Boianu Plain (Calmatui Plain), being located on the left bank of Olt River. Locality presents a predominant relief of plain low altitude that is characterized by alluvio-proluvial plains moderately fragmented with local terraces, covered with loess-like deposit but relief of saucer.The soil cover of the territory under study is the direct reflection of all environmental factors, each having a role in the pedogenetic processes. Thus, the climate conditions have ensured the solification direction, taking into account the temperature regime and the specific precipitation of the Boianu Plain.Steppe vegetation was the supply of organic matter and biomass, because the hydrological regime is deficient, but especially the lithological substrate (loess) to steer solification to types characteristic of the cernisols class.Under the influence of environmental factors and pedogenetic processes within the locality Daneasa it formed a wide range of soils, namely: protisols, cernisols, luvisols, hydrisols and salsodisols.

scholarly journals A review on conductometric studies of electrolytes in mixed solvent systems to understand ion-ion and ion-solvent interactions

2020 ◽  
Vol 10 (3) ◽  
pp. 5355-5360
Keyword(s):  
Mixed Solvent ◽  
Mixed Solvents ◽  
Chemical Properties ◽  
Electrolyte Solutions ◽  
Molar Conductance ◽  
Extensive Literature ◽  
Solvent Interactions ◽  
Physico Chemical ◽  
Wide Range ◽  
Solvent Systems

The study of ion- solvent interaction is of much importance to investigate the nature of different solutions. Measurement of electrical conductivity and evaluation of physico-chemical properties, such as molar conductance, limiting molar conductance, ion-pair association, Walden product etc. shade light on different intermolecular interactions present in electrolyte solutions. Solvation properties can be varied by mixing two or more solvents. An extensive literature survey on conductometric studies has been carried out on different electrolytes dissolved in a wide range of mixed solvent systems. The reported results show that strong solute-solute, solute-solvent and solvent-solvent interactions are responsible for the physico- chemical behavior of a solution in mixed solvents.

scholarly journals Contributions to the Knowledge of Soil Resources of Cuca Plain

2017 ◽  
Vol 5 (2) ◽  
pp. 13
Author(s):  
Anca -Luiza Stănilă ◽  
Mihail Dumitru ◽  
Cătălin Cristian Simota
Keyword(s):  
Environmental Factors ◽  
Soil Cover ◽  
Geographical Area ◽  
River System ◽  
Parent Material ◽  
Point Of View ◽  
Soil Resources ◽  
North Eastern ◽  
A Subunit ◽  
Pedogenetic Processes

The territory to which we refer is located in the geographical area of the Romanian Plain, north-eastern sector, representing a subunit of Plain Covurlui. From the administrative point of view this territory belongs entirely Galaţi County. Since the first review of Cuca Plain territory fragmentation is found in the form of ridges interfluvial oriented northwest-southeast separated by a river system consistent. The provision gives relief peaks ordely character of monotony. Starting from the idea that the soil appears as a product of the interaction of many factors, we can say that the formation of soil cover of Cuca Plain took part relief, parent material, climate, groundwater, vegetation, human activity. Under the influence of environmental factors and pedogenetic processes in the Cuca Plain were differentiated two classes of soils, namely: protisols and cernisols.

scholarly journals Effect of no tillage on the physico-chemical properties of soils of the El Koudia region, Rabat (Morocco)

2020 ◽  
Vol 150 ◽  
pp. 03010
Author(s):  
Hassnae Maher ◽  
Rachid Moussadek ◽  
Abdelmjid Zouahri ◽  
Ahmed Douaik ◽  
Houria Dakak ◽  
...  
Keyword(s):  
Organic Matter ◽  
Structural Stability ◽  
Plant Cover ◽  
Chemical Properties ◽  
Aggregate Stability ◽  
Agricultural Practices ◽  
Conventional Tillage ◽  
No Tillage ◽  
Physico Chemical ◽  
Chemical Properties Of Soils

In Morocco, agriculture is an important sector of the economy, accounting for 15 to 20% of Gross Domestic Product. However, it has faced several challenges: intensive tillage of land that has accelerated water erosion, seriously threatening water and soil potential, low plant cover density and misuse of traditional agricultural practices, causing a decrease in organic matter levels and destroying aggregate stability. Climate change is making water and soil management in agriculture more and more complicated. The major challenge for Moroccan agriculture is to increase agricultural production while preserving natural resources. The objective of our study is to evaluate the effect of no tillage (NT) on the physico- chemical properties of soil in the El Koudia experimental station, Rabat, Morocco. The crop is durum wheat, Arrehane variety. Soil samples are pre-dried, ground and screened to 0.2mm for organic matter (OM) analysis and 2mm for the remainder of the analyses. Plugs, canned, are then sintered, screened and dried for structural stability tests. The results show that no tillage (NT) favours the accumulation of surface OM, particularly at the 0-5cm horizon unlike conventional tillage (CT). The NT promotes structural stability, with a mean weight diameter (MWD) = 0.94mm for the NT compared to 0.83mm for the CT. These results show that soils ploughed in CT are more exposed to erosion degradation than soils not ploughed (NT). In addition, NT preserves soil moisture and promotes additional water retention of 5 to 10%.

scholarly journals Controllable synthesis of pomelo peel-based aerogel and its application in adsorption of oil/organic pollutants

2019 ◽  
Vol 6 (2) ◽  
pp. 181823 ◽  
Author(s):  
Guangyu Shi ◽  
Yizhu Qian ◽  
Fengzhi Tan ◽  
Weijie Cai ◽  
Yuan Li ◽  
...  
Keyword(s):  
High Speed ◽  
Chemical Properties ◽  
Absorption Capacity ◽  
High Porosity ◽  
X Ray Diffraction ◽  
Water Separation ◽  
Physico Chemical ◽  
Wide Range ◽  
Oil Water Separation ◽  
Oil Water

Oil/water separation is a field of high significance as it might efficiently resolve the contamination of industrial oily wastewater and other oil/water pollution. In this paper, an environmentally-friendly hydrophobic aerogel with high porosity and low density was successfully synthesized with renewable pomelo peels (PPs) as precursors. Typically, a series of sponge aerogels (HPSA-0, HPSA-1 and HPSA-2) were facilely prepared via high-speed dispersion, freeze-drying and silanization with methyltrimethoxysilane. Indeed, the physical properties of aerogel such as density and pore diameter could be tailored by different additives (filter paper fibre and polyvinyl alcohol). Hence, their physico-chemical properties including internal morphology and chemical structure were characterized in detail by Fourier transform infrared, Brunauer–Emmett–Teller, X-ray diffraction, scanning electron microscope, Thermal gravimetric analyzer (TG) etc. Moreover, the adsorption capacity was further determined and the results revealed that the PP-based aerogels presented excellent adsorption performance for a wide range of oil products and/or organic solvents (crude oil 49.8 g g −1 , soya bean oil 62.3 g g −1 , chloroform 71.3 g g −1 etc.). The corresponding cyclic tests showed the absorption capacity decreased slightly from 94.66% to 93.82% after 10 consecutive cycles, indicating a high recyclability.

scholarly journals Soil Heterogeneity Reflected in Biogeography of Beech Forests in the Borderland Between the Bohemian Massif and the Outer Western Carpathians

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Pavel Samec ◽  
Aleš Kučera ◽  
Klement Rejšek
Keyword(s):  
Bohemian Massif ◽  
Chemical Properties ◽  
Specific Weight ◽  
Soil Heterogeneity ◽  
Western Carpathians ◽  
Volume Weight ◽  
Physico Chemical ◽  
Outer Western Carpathians ◽  
Chemical Properties Of Soils

AbstractSoil environment characteristics naturally affect the biogeographical classification of forests in central Europe. However, even on the same localities, different systems of vegetation classification de-scribe the forest types according to the naturally dominant tree species with different accuracy. A set of 20 representative natural beech stands in the borderland between the Bohemian Massif (Hercyni-an biogeographical subprovince) and the Outer Western Carpathians (Westcarpathian subprovince) was selected in order to compare textural, hydrostatic, physico-chemical and chemical properties of soils between the included geomorphological regions, bioregions and biotopes. Differences in the soils of the surveyed beech stands were mainly due to volume weight and specific weight, maximum capillary capacity (MCC), porosity, base saturation (BS), total soil nitrogen (N

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