scholarly journals RESTORATION OF SOILS CONTAMINATED WITH RADIONUCLIDES BY PHYTOREDOMEDIATION METHOD

2020 ◽  
pp. 151-155
Author(s):  
I.V. Udalov ◽  
V.A. Peresadko ◽  
O.V. Polevich ◽  
A.V. Kononenko
Keyword(s):  
Model Experiment ◽  
Toxic Elements ◽  
Vegetation Period ◽  
Soil Restoration ◽  
Soil Conditions ◽  
Geochemical Barriers ◽  
Artificial Geochemical Barriers

The possibility of soil restoration by means of phytotechnology and artificial geochemical barriers (GB) from contamination by radionuclides (RN) and toxic elements (TE) is methodologically substantiated. For this purpose, a number of artificial GBs were created at a special landfill within the framework of a model experiment. The process of formation and development of barriers, their parameters are investigated. Agrophytocenosis cultures were selected for optimal phytostabilization of soil conditions. The study of phytoextraction of TE and RN by agrophytocenosis cultures during one complete vegetation period was performed. Some selectivity of the investigated plants for extraction of different TEs and RNs from soils and material of barriers was revealed.

ASPECTS CONCERNING PEANUTS CROPS ON SANDY SOILS IN SOUTHERN OLTENIA

2021 ◽  
Author(s):  
Milica Dima ◽  
Aurelia Diaconu ◽  
Reta Drăghici ◽  
Drăghici Iulian ◽  
Matei Gheorghe
Keyword(s):  
Proper Time ◽  
Sandy Soils ◽  
Vegetation Period ◽  
Yield Potential ◽  
High Yield ◽  
Soil Conditions ◽  
Growth Type ◽  
Great Production ◽  
Large Production ◽  
Seeding Time

"For the capitalization of the climate and soil conditions for the sandy soil region in Southern Oltenia by cultivating peanuts it is necessary to use varieties with large production abilities and proper technology for the crops. In view of its cultivation on south Oltenia sandy soils, there were carried out in the period 2004-2006, at the Plants Crops Research and Development Station on Sandy Soils Dabuleni, experiments have been set regarding aspects such as: the optimal seeding period, the recommendation varieties with high yield potential and balanced composition. The research was conducted under irrigation conditions, in a three-year rotation of wheat, peanut, maize. Along with erect growth type varieties, known for their short vegetation period, rising and creeping growth type varieties can also be used; these varieties have a great production potential in our country`s conditions. Establishing the proper time for seeding is espe since sandy soils are heating quickly but are also cooling quickly, the best seeding time is between the end of April- the beginning of May, depending on the date when the seeding depth has a steady temperature, minimal required for the seed to germinate."

scholarly journals METALS IN OILED PEAT (WESTERN SIBERIA)

2011 ◽  
pp. 67-79
Author(s):  
Yu. Vodianitsky ◽  
A. Savichev ◽  
S. Trofimov ◽  
E. Shishkonakova
Keyword(s):  
Condition Monitoring ◽  
Western Siberia ◽  
Soil Condition ◽  
The State ◽  
Peat Bog ◽  
Peat Layer ◽  
Geochemical Barriers ◽  
Artificial Geochemical Barriers

The study of metals in oil-contaminated peat has double meaning. Firstly, it is diagnostic as convenient and simple The method of soil condition monitoring, and secondly, the ecological method to predict the state of the peat bog as a biocenosis element. Every pollutant elements in contaminated peat are divided into two bands. Some of them (Ti, V, Cr, Ni, Zr, Ba, Y, La, Ce, Nd) accumulate in the upper, bituminous layer of peat. Other elements (halogen chlorine, as well as metals: Ca, Mp, Zn, Cu, Sr), on the contrary, migrate deep into the peat layer with light fractions hydrocarbons. For capturing particularly moving Cu metals, Zn needs to be equipped with artificial geochemical barriers to prevent pollutants from entering groundwater and open ponds.

scholarly journals NORTH-AMERICAN SPECIES OF ROWAN TREES FROM THE COLLECTION OF THE SOUTH-URAL BOTANICAL GARDEN

Ekosistemy ◽  
2020 ◽  
pp. 66-71
Author(s):  
R. G. Abdullina
Keyword(s):  
North American ◽  
Vital Signs ◽  
Vegetation Period ◽  
Botanical Garden ◽  
Climatic Conditions ◽  
North American Species ◽  
Research Centre ◽  
Soil Conditions ◽  
The South ◽  
Species Characteristics

A brief description of three North-American species of rowan trees from the collection of the South-Ural Botanical Garden-Institute of Ufa Federal Research Centre of Russian Academy of Sciences (UFRC RAS): Sorbus decora, Sorbus americana and Sorbus scopulina is given. The climatic conditions of introduction area are similar in temperature to the parameters of the natural range of the North American S. decora: they are not optimal for it, but the plants bloom and give viable seeds. It can be assumed that vital signs of S. decora would be higher in milder climate and favorable water-physical soil conditions. According to the analysis of variance, it is revealed that the conditions of the year and species characteristics significantly affect all the phenological phases of development of North American rowan trees. At the same time, they are more dependent on the temperature conditions of the year (F=17.4 at p<0.001) and less on species characteristics (F=6.2, at p<0.001), although the sequence of phenophases is maintained from year to year. The average vegetation period of rowan trees is 154–163 days. S. decora growing in the Botanical Garden for a long time (planted in 1960–1974) and relatively new species for the collection – S. mericana and S. scopulina (2009–2013) can be considered promising decorative crops for growing in the climatic conditions of Ufa and the Bashkir Urals

scholarly journals WAYS TO REDUCE THE RISK OF OCCURRENCE OF ENVIRONMENTAL ORIGIN EMERGENCY SITUATIONS IN AREAS OF ANTHROPOGENIC IMPACT AT COAL MINES

2018 ◽  
pp. 125-131
Author(s):  
V. Karabyn
Keyword(s):  
Mine Waste ◽  
Principal Component ◽  
Environmental Parameters ◽  
Ash Content ◽  
Coal Basin ◽  
Geochemical Barriers ◽  
Emergency Situations ◽  
Mine Dumps ◽  
Waste Dumps ◽  
Artificial Geochemical Barriers

The description of the topic and problems of the object.  The factors of environmental danger that can lead to emergency situations in areas of technogenic impact of mining enterprises in the Lviv-Volyn coal basin are analyzed. The purpose of the article is to justify the feasibility of the measures to minimize the spread of pollutants from mine dumps by the arrangement of geochemical barriers. The results of the research. The microelement composition of the dumps rocks of some mines in the coal basin have been examined. The rocks of mine waste heaps Chervonograd in compareness with the clark for clays and mudstone rocks of waste heaps concentrate Cobalt, Lead, Magnesium, Yitrium, Cuprum, Itterbium and Beryllium; Nadiia – Gallium, Manhan, Plumbum, Stanum, Itterbium, Cuprum;  Stepova – Titanium and Tsirconium; Mezhyrichanska – Molybdenum and Plumbum. By the principal component methodparagenetic associations of trace elements and environmental parameters, which gave the opportunity to predict the ways and forms the main components of migration of trace element contamination are dedicated. In particular, for the rocks of mine waste heaps at Stepova such paragenetic associations are allocated: 1) the thickness of the bulk layer, the swiftness of slope, the ash content of rocks, the concentration of  Sn, Cr, Zn and mudstones; thecontent of coal, pyrite, siderite, siltstone, Co, Ni, Mo, Cu, geomorphological characteristics, radioactivity of rocks; 2) the concentration of Pb, Ti, Cu, Sr, mudstone and rocks; 3) the contents of Mn and P. For the rocks of mine Mezhyrichanska are shown the  association: 1) content of V, Y, Yb, Co, Ti, P, Cr, Ni, Be, Mn, Cu, Ba, Sn, Sc, Zn, Ga, Sr, Zr, ash content of rocks 2) the content of Mo, distribution of coal, not burnt rocks and pyrite. For the environment protection from pollution the most optimal methods are based on acceleration of the natural transformation of pollutants in the secure or their targeted concentrations in some limited areas with an area of the lithosphere, which are declared. To reduce the level of environmental risk and minimize the occurrence of emergency, on the territory of the Lviv-Volyn coal basin, the arrangement of artificial geochemical barriers on the way of pollutants from coal mine waste dumps to water have been proved for the first time.

Impact of weather conditions on variability in sunflower yield over years in eastern parts of Croatia and Hungary

2012 ◽  
Vol 60 (4) ◽  
pp. 397-405 ◽  
Author(s):  
A. Mijić ◽  
I. Liović ◽  
V. Kovačević ◽  
P. Pepó
Keyword(s):  
Meteorological Data ◽  
Correlation Coefficients ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Soil Conditions ◽  
Field Crops ◽  
Oil Crops ◽  
Air Temperatures ◽  
Important Field ◽  
The Impact

Oil crops constitute the second most important field crops worldwide and are important both in Hungary and Croatia. Among the oil crops, sunflower has a significant role in Hungary (∼550,000 ha) and Croatia (∼30,000 ha). The main aim of this study was to compare sunflower yields and their variation over years (2000–2007) in the eastern parts of Hungary and Croatia, with the emphasis on the impact of rainfall and temperature regime, and using a rain factor (RFm) calculated monthly as the quotient of precipitation (mm) and mean air temperatures (°C). The results showed that the year had a different effect on the yield of sunflower in the different counties of eastern Hungary and Croatia, because of their different soil conditions. The results proved that the highest yields of sunflower (2140–2710 kg ha−1) were obtained in years when the rainfall before and during the vegetation period was 110–130 mm and 350–420 mm, which was very similar to the 30-year mean data (82–108 mm and 305–346 mm, respectively). The strongest correlations (positive and negative r values) between meteorological data and sunflower yields were found in counties with unfavourable soil conditions. In counties with better soil fertility the correlation coefficients were smaller, indicating that better soil conditions can compensate for unfavourable year effects (especially temporary shortage of rainfall or unfavourable rainfall distribution).

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