scholarly journals Environmental Role of Earthworm (Lumbricidae) in Formation of Soil Buffering Capacity Against Copper Contamination in Remediated Soil, Steppe Zone of Ukraine

10.5772/64722 ◽  
2016 ◽  
Author(s):  
Iryna Loza ◽  
Yurii Kul'bachko ◽  
Oleg Didur ◽  
Angelina Kryuchkova
Keyword(s):  
Steppe Zone ◽  
Buffering Capacity ◽  
Copper Contamination ◽  
Soil Buffering

Responses of soil buffering capacity to acid treatment in three typical subtropical forests

2016 ◽  
Vol 563-564 ◽  
pp. 1068-1077 ◽  
Author(s):  
Jun Jiang ◽  
Ying-Ping Wang ◽  
Mengxiao Yu ◽  
Kun Li ◽  
Yijing Shao ◽  
...  
Keyword(s):  
Acid Treatment ◽  
Buffering Capacity ◽  
Subtropical Forests ◽  
Soil Buffering

scholarly journals The Role Of Perennial Grasses In The Protection Of Soil Resources Of Erosive Ecosystems With Active Development Of Linear Erosion

2021 ◽  
Vol 901 (1) ◽  
pp. 012007
Author(s):  
V M Kosolapov ◽  
V I Cherniavskih ◽  
E V Dumacheva ◽  
M N Marinich ◽  
L D Sajfutdinova ◽  
...  
Keyword(s):  
Festuca Arundinacea ◽  
Trifolium Pratense ◽  
Genetic Material ◽  
Steppe Zone ◽  
Perennial Grasses ◽  
Grass Species ◽  
Forest Steppe ◽  
Perennial Legume ◽  
The Stability

Abstract We evaluated the stability of perennial legume and cereal grass species in artificial plant communities on permanent anti-erosion watercourses in the agroecosystems of the Belgorod region with active development of linear soil erosion. In the conditions of steppe and forest-steppe zones of the Belgorod region on permanently grassed watercourses in 2017-2019. varieties of perennial leguminous and cereal grasses: ‘Krasnoyaruzhskaya 1’ and ‘Krasnoyaruzhskaya 2’ (Medicago varia), ‘Kazatsky’ (Trifolium pratense), ‘Olshanka’ and ‘Ivica’ (Festuca arundinacea), ‘Streletsky’ and ‘Stepnyak’ (Lolium perenne)) obtained using local genetic material were studied. All varieties showed their resistance in agro-ecosystems with active development of linear erosion in the forest-steppe and steppe zones. Projective cover on watercourses in the steppe zone in all variants of experience was on average 83,4 %, in the forest-steppe zone - 86,3 %. In the third year of the tests on permanently irrigated watercourses in the steppe zone, the share of cereal and legume grass species was quite high and varied from 88 % in the variant M. varia + Onobrychis arenaria to 92 % in the variants M. varia + Bromopsis inermis and O. arenaria. In the forest-steppe zone, the share of cereal and legume grass species varied from 86 % in the variant L. perenne to 94 % in the variant L. perenne + B. inermis.

scholarly journals ГЕОГРАФІЧНА СТРУКТУРА УРБАНОФЛОР СТЕПОВОЇ ЗОНИ УКРАЇНИ

2016 ◽  
Vol 6 (2) ◽  
pp. 239-245
Author(s):  
G. G. Derevyanska ◽  
O. Z. Glukhov
Keyword(s):  
Great Influence ◽  
Steppe Zone ◽  
Significant Heterogeneity ◽  
Geographic Ranges ◽  
Urban Flora ◽  
Adventive Species ◽  
Number Of Species ◽  
The Impact ◽  
Transition Type

<p>This paper considers the problem of geographic links between the urban flora of steppe zone of Ukraine on the example of the industrial agglomeration Donetsk-Makeyevka, in comparison with urban flora of Kherson and Kirovograd. We presented the detailed description of special features of the composition of geographic elements of the agglomeration flora. It strongly reflects the characteristic features of steppe urban flora, because its territory is affected by the anthropogenic influence at large extend. The spectrum of geographic ranges of species from the agglomeration Donetsk-Makeyevka urban flora numbers 6 types, 12 classes and 130 groups of ranges. The urban flora is both represented by species with wide and local ranges, endemics, that point to its significant heterogeneity. However, compared to the flora of Kherson and Kirovograd, the role of holarctic type of ranges in the agglomeration flora (375 species compared to 400 and 522 species, respectively) is reduced in favor of the polyregional type, reflecting active adventization processes. The holarctic class itself is represented by 150 species (16.7%). It far exceeds the number of species of this class in the regional flora (9.2%), since nearly a half of their number in the observed flora is adventive species. Second place by the number of species in the holarctic class belongs to the European and North American group (13; 1.5%). Apart from this, seven more groups of the class, comprising 1-3 species each, are connected with North America. The polyregional type is represented to a large extent by the species of ruderal habitats. The total number of species of this type is 199. The palaearctic class includes the greatest number of ranges of species from the agglomeration urban flora (31); it consists of 175 species (19.5%), that is less than such index for regional flora (27.3%). The European and Old Mediterranean transition type comprises 97 species (10.8%), that is less than in other urban flora of steppe zone (128; 13.3% in Kherson and 171; 18.0% in Kirovograd). The Nomadic type numbers 132 species (14.7%). One more species – Verbascum marschallianum Ivanina et Tzvelev – is related to the Nomadic and European transition type. The Nomadic and Old Mediterranean transition type includes 93 species (10.4%). This all suggests heterogeneity of urban flora of steppe zone of Ukraine due to their wide geographic connections. On the one hand, they have features of regional flora, which was formed under the great influence of Old Mediterranean flora and has a significant number of narrow-range and endemic species. On the other hand, under the impact of urbanization one can observe the reduction of the role of ranges of the Nomadic type and the enhanced role of the polyregional type due to the significant number of adventive species.</p><p> </p>

scholarly journals Agroecological aspects of application of Pseudomonas sp. DA1.2 in overcoming herbicidal stress in wheat

2020 ◽  
Vol 23 ◽  
pp. 03009
Author(s):  
Maxim. D. Timergalin ◽  
Arina V. Feoktistova ◽  
Timur V. Rameev ◽  
Gaisar G. Khudaygulov ◽  
Sergei N. Starikov ◽  
...  
Keyword(s):  
Bacterial Strain ◽  
Field Experiments ◽  
Steppe Zone ◽  
Pseudomonas Sp ◽  
Synthetic Auxins ◽  
Promising Agent ◽  
Relative Water ◽  
Stress Application ◽  
Positive Effect

This article submits results of laboratory and field experiments on the effect of an auxin-producing bacterial strain Pseudomonas sp. DA1.2 in comparison with Pseudomonas koreensis IB-4 on wheat plants in conjunction with the “Chistalan” herbicide treatment. Our work shows the positive effect of bacterial treatments on plant growth, the relative water content in leaves and the role of bacteria in the redistribution of ABA and IAA in wheat shoots under conditions of herbicidal stress. Application of Pseudomonas sp. DA1.2 together with the herbicide in the field of the steppe zone led to an increase in yield by 20% relative to the control variant. This bacterial strain helps to overcome herbicidal stress and is a promising agent for improving the technology of using synthetic auxins herbicides.

scholarly journals The role of titanium in biomass production and its influence on essential elements’ contents in field growing crops

2011 ◽  
Vol 51 (No. 1) ◽  
pp. 19-25 ◽  
Author(s):  
P. Tlustoš ◽  
P. Cígler ◽  
M. Hrubý ◽  
S. Kužel ◽  
J. Száková ◽  
...  
Keyword(s):  
Nitrogen Availability ◽  
Spring Barley ◽  
Essential Elements ◽  
Field Conditions ◽  
Agricultural Crops ◽  
Beneficial Effects ◽  
The Individual ◽  
Soil Buffering ◽  
N Status

The role of titanium (Ti) in plant metabolism is not so far fully clear. Many positive beneficial effects as well as a few adverse effects of Ti application are described in literature. The objective of our study was to investigate the effects of Ti foliar applications alone or in combination with Mg on the yield and accumulation of essential cations in consumable portions of frequently grown agricultural crops (potatoes, winter wheat and spring barley) grown under reduced and optimum nitrogen availability in field conditions. Nitrogen side dress fertilization significantly affected the investigated parameters, especially yield and N content. The effect of foliar Ti applications was substantially influenced by the nutrient N status of the individual plants. The plant response to Ti applications was almost negligible under N deficiency. At N treated plots the responses were much clearer but not many significant differences were found confirming high soil buffering capacity and many counteracting effects under field conditions.

CO2 effect on the pH of compacted bentonite buffer on the laboratory scale

Clay Minerals ◽  
2013 ◽  
Vol 48 (2) ◽  
pp. 277-284 ◽  
Author(s):  
A. Itäla ◽  
J. Järvinen ◽  
A. Muurinen
Keyword(s):  
Partial Pressure ◽  
Spent Nuclear Fuel ◽  
Buffering Capacity ◽  
Test Cases ◽  
Experimental Setup ◽  
Atmospheric Conditions ◽  
Compacted Bentonite ◽  
Bentonite Buffer ◽  
Insight Into

AbstractDisposal of Finnish spent nuclear fuel is planned to be based on the KBS-3 repository concept. The role of the bentonite buffer in this concept is essential, and thus the behaviour of the bentonite has to be known. The experiments in this paper concentrated on providing information about the effects of carbon dioxide CO2(g) partial pressure on compacted sodium bentonite, giving an insight into the buffering capacity. The experimental setup consisted of a hermetic box which had a CO2-adjusted atmosphere, and the bentonite was in contact with this atmosphere through water reservoirs. The results indicated that it is possible to measure online the changing pH in the porewater inside compacted bentonite using IrOx electrodes. It was found that the pH fell if the CO2 partial pressure increased above atmospheric conditions. The experimental results indicated a greater fall in pH than in our model in the test cases where CO2 was present. The pH in the experiment with 0 PCO2 remained nearly constant throughout the 5 month period. On the other hand, the pH dropped to near 6 with 0.3 PCO2 and to 5.5 with 1 PCO2.

scholarly journals The role of beef breeding cows in strategic management of feed supply under pasture variability

1991 ◽  
pp. 145-149
Author(s):  
A.B. Pleasants ◽  
R.A. Barton ◽  
P.J. Batley
Keyword(s):  
Risk Management ◽  
Strategic Management ◽  
Buffering Capacity ◽  
Production Cycle ◽  
Beef Cow ◽  
Livestock Policy ◽  
Economic Use ◽  
Farm Livestock

The ability of the beef cow to buffer herself against pasture variability by losing liveweight at certain periods in the production cycle is reviewed. The point is made that this attribute of the beef cow can be used to buffer other enterprises on the farm less able to cope with variability in pasture feed supply. It is suggested that a farm livestock policy should include livestock classes like the beef cow which, because of their ability to buffer against variability in pasture feed supply,canresultinamoreefficient, and more economic use of pasture on the farm. Keywords Beef cow, nutrition, pasture variability, flexibility, buffering capacity, risk management

scholarly journals The role of variety and forecrop in the population dynamics of Rhizoctonia solani in soil

2021 ◽  
Vol 51 (1) ◽  
pp. 25-32
Author(s):  
A. A. Malyuga ◽  
N. S. Chulikova
Keyword(s):  
Population Dynamics ◽  
Rhizoctonia Solani ◽  
Growing Season ◽  
Steppe Zone ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
The Difference ◽  
Two Peaks

Long-term studies (2014–2019) of the population dynamics of the fungus Rhizoctonia solani Küch. were carried out in the soil on the Purple Majesty, Vitelotte and Fioletovy potato varieties and preceding crops (potatoes, oats and tendergreen). The study was carried out in Novosibirsk region in the soil and climatic conditions typical of the forest-steppe zone of Western Siberia. To study the peculiarities of R. solani fungus population dynamics in potato plantations, soil samples were taken from under the plants during the entire growing season. The accumulation of rhizoctonia propagules in the soil was determined using the method of multiple soil pellets. The difference in the amount and rate of accumulation of the fungus R. solani on different varieties, as well as the influence of previous crops on this process, was established. Two peaks of the fungus accumulation were observed on the Purple Majesty variety: the first (48.7 propagules/100 g of soil) – during the full germination period, the second (57.2 propagules/100 g of soil) – at the end of the crop maturation phase. One peak was observed in the population dynamics of the fungus on Vitelotte and Fioletovy varieties, at the end of the ripening period (59.0 and 49.1 propagules/100 g soil, respectively). The smallest amount of R. solani fungus in the soil on average during the growing season was noted on the Fioletovy variety – 33.3 propagules/100 g of soil. In the Purple Majesty and Vitelotte varieties, this figure was 41.5 and 40.4 propagules/100 g of soil, respectively. When potato variety Agata was cultivated as monoculture, there was a rapid and significant accumulation of the fungus R. solani in the soil (from 34.6 to 126.8 propagules/100 g of soil). When this variety was cultivated following tendergreen or oats, the amount of the pathogen varied to a lesser extent (25.1–52.2 and 19.8–41.0 propagules/100 g of soil, respectively). No sharp increases in the number of propagative structures of the phytopathogen in the soil were noted.

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