scholarly journals Change of nitrogen regime of gray forest large-sawn-light-ber-soil soil under the influence at different systems fertilizer and chemical land-reclamation

2021 ◽  
Vol 12 (1) ◽  
pp. 77-85
Author(s):  
O.V. Dmytrenko ◽  
◽  
M.A. Tkachenko ◽  
A.I. Pavlichenko ◽  
◽  
...  

The results of research in a stationary study, based in 1992 on gray forest coarse-grained loamy soil, on the impact of long-term chemical reclamation and0,0 various supply systems (mineral, organic, organo-mineral) on the nitrogen regime. Nitrogen is extremely important in agriculture, as all processes, photosynthesis, volume of substances and distribution of the level of yield and its quality are impossible without this element. In the total coverage of the country, the share of soils of forest origin exceeds 33 %, and among agricultural lands – 25 %. Given the content of humus and its total reserves, the integrated indicator of soil formation and the most important characteristic that determines the overall habit of the soil, in the articles above, change it from the above factors. It can also be shown that the content of gross nitrogen reflects the humus content, which is determined and differs from the humus content of the residual. There is a high density correlation between these indicators for all different studies (r = 0,991). The obtained data indicate that only with the use of greens and by-products of precursors and measured doses of mineral fertilizers with the use of liming achieved by the size of the total nitrogen to the initial level. The growth of the composition is 0,36 – 0,45 t / ha and in this case we can state the expansion of its reproduction. Only after mineralization nitrogen of organic compounds becomes available to plants. The form of nitrogen, which is easily hydrolyzed, is a fairly reliable indicator of the provision of this element. To classify the test content with the content of mobile compounds 81,2 – 103 mg / kg belong to the user groups with a very high degree of supply, but the degree hydrolyzes organic substances in high quantities (9,6 – 10,2 %). With the combined use of green manures, non-marketable plant products, single doses of mineral fertilizers in a combination of lime achieved growth of 27,5 % on the restoration to control of this form of nitrogen. For the above complex of nutrients at an increased content of 16,5 mg/kg to control the amount of N-NO3- + N-NH4 +, as well as 7,4 mg / kg of nitrifying capacity of the soil. The studied gray forest soils belong to the group of soils with low humus content and its total reserves, which are inherited from the original pedogenesis and modern soil formation processes. Under the influence of a set of agronomic measures for a long time the type of humus does not change, which indicates the invariability of the direction of soil formation

Author(s):  
P. H. Kopytko ◽  
◽  
R. V. Yakovenko

The issue of scientifically sound fertilizer application in fruit plantations, which are long-term and re-grown in one place remains insufficiently studied. To solve this problem is possible only in long-term stationary studies, as the impact of different fertilizer systems on changes in soil properties and tree productivity for a long period of their use. The results of researches of long-term fertilizer influence on the main fertility indices of dark gray podzolic heavy loam soil and productivity of repeatedly grown apple trees of Idared varieties on seed and vegetative (M4) rootstocks and Calville snow on seedling rootstock are considered. During the 85-year period of growing the first and second generation of apple trees in the experimental garden, the organic fertilizer (40 t/ha of cattle manure), mineral fertilizer (N120P120K120) and their combination (20 t/ha of manure + N60P60K60) were applied in the old plantation every two years in autumn in plowing in rows at 18–20 cm, and in the new repetition: manure, phosphorus and potassium fertilizers as well, and nitrogen fertilizer in half doses annually in spring for cultivation or disk plowing to a depth of 12–15 cm. As a result of research it was found that organic fertilizer better than mineral fertilizers provided the formation of soil fertility (humus and mobile compounds and forms of nutrients, soil reaction) and yield capacity of experimental apple trees, which for all years of fruiting exceeded the total yield of Calville snow and Idared on seedling and vegetative rootstocks, respectively, by 34.8, 27.7 and 23.4 % compared with the yield of the control non-fertilized areas and 16.0, 15.8 and 13.2 % – on those fertilized with N120Р120К120. Similar parameters of soil fertility indicators are formed by the organo-mineral fertilizer system with systematic long-term application of half the norms of organic and mineral fertilizers of manure 20 t/ha together with N60P60K60. However, the mineral system (N120P120K120) significantly less increases the humus content and content of macronutrients available for plant nutrition and does not enrich the soil with trace elements, acidifies the reaction of the soil environment


Author(s):  
Н.Т. Чеботарёв ◽  
О.В. Броварова

Исследования эффективности минеральных удобрений на фоне последействия извести, внесённой в 1983 году, проводили в 1983–2020 годах на опытных полях Института агробиотехнологий ФИЦ Коми НЦ УрО РАН. Целью исследований было изучение влияния минеральных удобрений на продуктивность и качество бобово-злаковой травосмеси, а также выявление изменений агрохимических показателей почвы под влиянием удобрений и мелиорантов. В результате установлено, что наиболее значительный средний урожай бобово-злаковой травосмеси получен при использовании минеральных удобрений (N60P75K75) на фоне последействия извести (2,0 г.к.). Он составил 6,6 т/га сухого вещества (СВ) и превышал вариант без удобрений на 153,8%. Близкая урожайность трав получена при использовании NPK по фону извести 1,0 г.к. — 6,2 т/га СВ. Установлено, что при использовании удобрений и мелиоранта содержание сухого вещества в травах снижалось на 1–2%. Наибольшее количество сырого протеина было в травах при совместном применении NPK и извести (12,3–13,9%), как и содержание фосфора, калия и кальция (0,91–0,94; 2,82–2,93; 0,77–0,79% соответственно). Наши исследования показали: наиболее оптимальным приёмом воздействия на кислую дерново-подзолистую почву является применение минеральных удобрений (N60P75K75) по фону последействия двух доз извести. К 2010 году содержание гумуса повысилось на 0,4–0,5%, обменная кислотность снизилась на 0,6–0,8 ед. pHKCL, гидролитическая кислотность — на 1,3–1,9 ммоль/100 г почвы, содержание подвижного алюминия — на 1,1–2,2 ммоль/100 г почвы. Значительно повысилось количество подвижного фосфора (156–184 мг/кг почвы) и калия (до 141 мг/кг почвы), в большей степени — при применении NPK по фону последействия извести 2,0 г.к. The effectiveness of mineral fertilizers was tested on the background of lime applied in 1983 at the Institute of Agrobiotechnology from 1983 to 2020. The aim was to analyze the impact of mineral nutrition on productivity and quality of a legume-gramineous mixture as well as on soil chemistry. The mixture showed the best productivity (6.6 t DM ha-1) on the background of N60P75K75 and pH of 2.0. The yield increase amounted to 153.8%. Mineral fertilization under soil pH of 1.0 resulted in 6.2 t DM ha-1. The use of ameliorant decreased DM accumulation by 1–2% under fertilization. Combination of NPK and liming led to the highest content of crude protein (12.3–13.9%) as well as P, K and Ca (0.91–0.94; 2.82–2.93; 0.77–0.79%, respectively). Application of N60P75K75 had the best effect on acid sod-podzolic soil on the background of double liming. By 2010 humus content increased by 0.4–0.5%, pHKCL — by 0.6–0.8 units, hydrolytic soil acidity — by 1.3–1.9 mmol/100 g of soil, soluble Al concentration — by 1.1–2.2 mmol/100 g of soil. Concentrations of soluble P and K grew significantly — 156–184 and up to 141 mg/kg of soil, respectively, mostly due to the NPK application under soil pH of 2.0.


Author(s):  
Leonid Sereda ◽  
Dmytro Kovalchuk

The agro-industrial complex of Ukraine is a branch of the national economy designed to ensure the production of sufficient food for the population at high quality. The dynamic growth of the country's population leads to an increase in the gradual need for food, thus the agro-industrial complex will be a relevant industry for a long time, one of the key areas of economic development. The basis of agricultural production is agriculture, the main subject of which is land. Today, agriculture in the country is experiencing a very serious problem associated with the rapid decline in potential soil fertility. Effective development of agriculture in Ukraine does not do without the introduction of innovations in agriculture. Namely, the introduction of rational technologies with minimization of tillage and new design solutions for tillage units, focused on preserving and increasing the potential fertility of the country's lands, which is the key to a highly efficient process of crop production. Industrial tillage technology The impact on the soil, in addition, the violation of the technology of fertilizers, both organic and mineral, leads to a high level of plowing, deterioration of soil structure and reduced humus content, so research aimed at finding alternative, modern technologies tillage, which will preserve and restore the potential fertility of soils, which determines the relevance of this article. Thus, in order to preserve the main indicator of soil fertility of Ukraine, the authors of the article conducted theoretical studies of the parameters of the tillage unit for tillage technologies Strip-till, preceding the design and design, the main results of which are presented in the article.


Author(s):  
V.K. Kuznetsov ◽  
◽  
N.N. Isamov ◽  
A.V. Panov ◽  
◽  
...  

The paper presents the impact of remedial actions on 137Cs content in agricultural lands affected by radiation as a result of the Chernobyl accident. The remediation of Cs-137 – contaminated of hayfields and pastures in the vicinity of the Veprin village, located in the Bryansk region, was car-ried out in 2004. Remediation of greenlands aimed at reduction of soil-forage-milk transfer of 137Cs involved deep ploughing of the soil, liming, introducing high doses of mineral fertilizers and sowing grass mixtures. Evaluation of remedial actions effectiveness after the first three years and 15 years later is discussed in the paper. Undertaken agrotechnical measures resulted in reduc-tion of soil surface layer density contamination with 137Cs by 1.8 times. Due to remediation of the pasture in the river flood-plain the soil surface layer density contamination with 137Cs was re-duced by 2.7 times and dose rate by 1.9 times. It is to be noted that lower geomorphological ele-ments of the landscape with prevailing peat soils are critical for accumulation of 137Cs in the grass stand and accumulation of radionuclides in the river floodplain. In the first three years after the remediation 137 Cs soil-grass transfer was reduced by 3 times, and in cultivated hayfield soils the 137Cs transfer was reduced by 8 times. While the land reclamation effectiveness weakened signif-icantly in 15 years after the remediation, accumulation of 137Cs in grass stand grown on cultivated hayfields was 1.6 time lower than in the grass grown in uncultivated lands. The radionuclide con-tent in cultivated pastures is 1.8 times lower than in uncultivated ones. The content of 137Cs in milk was reduced by 3.3 times in the first years after grasslands reclamation, in 15 years the reduction factor was 1.5. Outcomes of long-term follow-up of radioecological situation in grasslands, af-fected by radiation as a result of the Chernobyl accident, following land remediation and the as-sessment of its effectiveness can be used as the motivation for and benefits of remedial actions ensuring radiation safety of agricultural products from radioactively contaminated areas. The ob-tained results can be used for clarification and adjustment of the strategies of reclamation of ra-dioactively contaminated lands and optimal use of grasslands after their restoration.


2016 ◽  
pp. 62-68
Author(s):  
L. Vorotyntseva

The article gives the results of monitoring studies on the effect of drip irrigation by mineralized water on such soil-reclamation indicators of chernozem ordinary of Northern Steppe as salt regime, the composition of absorbed cations, humus content, nutrient status, bulk density, particle size and microaggregational composition. For irrigation we used water from the local pond, which was characterized by a weak alkaline reaction (pH 7.6–7.7) and mineralization 2.1–2.3 g/dm3. Investigations were carried out under a unit of vegetable crop rotation, followed by such alternating crops as 1. Tomatoes, 2. Onions, 3. Peppers. The local nature of moistening under drip irrigation leads to a diversity and spatial differentiation of soil-reclamation rates in the interval of feed-row-row spacing. With this method of irrigation in chernozem ordinary there is intensification of salinization and alkalinity processes (the formation of bands with a high content of soluble salts and sodium absorption), especially in the area of irrigation band. Long-term irrigation led to a decrease in the total humus content, increase in weight of particle size distribution to medium loamy due to the growth of silt fractions and fine dust, destruction and reducing the stability of the microstructure. To assess the impact of the intensity and extent of changes in soil properties in order to prevent local manifestations of degradation processes and reducing the fertility of chernozem ordinary it is necessary to carry out systemic monitoring observations.


2022 ◽  
Vol 6 (4) ◽  
pp. 348-356
Author(s):  
P. L. Paleev ◽  
L. I. Khudyakova

Environmental pollution creates problems for health of people living in residential areas near pollution sources. Studies aimed at developing methods for investigating the impact of industrial facilities on the air is of interest. The purpose of this work is to analyze the methodology for assessing the risk of exposure of a technosphere object to the atmosphere. It was assumed that the enterprise in emergency mode emits pollutants through the source of emissions at the maximum single concentration of the substance exceeding the maximum permissible concentration. To calculate the impact on a human, various scenarios of an emergency situation are taken into account. These are constructing failure trees and using well-known health risk assessment techniques. The calculation took into account the wind rose for a specific enterprise location and wind speed projections obeying the normal distribution law. These assumptions allowed us to develop a method for calculating the risk of exceeding the concentration of a pollutant at a given point (x, y) during the year. Isolines of surface concentrations were built. Three toxic substances were taken for analysis. The method for calculating the dispersion of emissions of harmful (polluting) substances in the atmospheric airwas used; maps of the dispersion of isolines of pollutants in residential areas were constructed. When solving the inverse problem, emergency emission intensities at which excess of permissible concentrations occurred were determined. In the range of multiplicities exceeding the maximum single maximum permissible concentration from 1 to 5, the dependence was well approximated by a straight line. This technique can be used to determine the risk of diseases caused by carcinogenic and noncarcinogenic substances and minimize the risk of exposure to harmful substances. Ash and slag wastes are the source of negative impact on the environment. This area is studied by a number of researchers. The article aims to systematize the data on possible applications, accumulated practical experience of using ash and slag waste in agriculture both in Russia and abroad. The analysis showed that waste from the fuel and energy industry can be widely used in various areas of agriculture. It can be used as ameliorants, zeolite-based mineral fertilizers, pesticides and insecticides for treating horticultural crops, microfertilizers, as well as for soil remediation and land reclamation. The use of ash and slag waste in agriculture and other sectors of the national economy can reduce the ecological load on the environment. The number of overfilled ash dumps can be reduced, and there will be no need to build new ones.


2019 ◽  
pp. 21-38
Author(s):  
Alexander N. Deryugin ◽  
Ilya A. Sokolov

The paper analyzes the impact of the “model budget” on the problems of intergovernmental relations in the Russian Federation: a high proportion of expenditure obligations of regional and local budgets and a high degree of interregional inequality in fiscal capacity and socio-economic development. It was concluded that the planned broader use of the “model budget” will not solve the problem of unfunded mandates and will lead first to a significant reduction in incentives for regional authorities to develop the territorial revenue base, and then to economic slowdown in the country. As an alternative approach to improving intergovernmental relations, options are being considered for adjusting the parameters of the equalization transfers distribution formula, the procedure for determining their total volume and calculating the budget expenditure index. In solving the problem of unfunded mandates, an equally important role is given to the procedure for preparing a financial and economic rationale for draft laws.


2015 ◽  
Vol 2 (2) ◽  
pp. 39-44
Author(s):  
V. Lopushniak

Aim. To establish the effect of different fertilization systems in short fi eld crop rotation on the change in the state of humus in the dark gray podzolic soils in Western Forest-Steppe of Ukraine. Methods. Field studies were carried out in a stationary experiment of the Department of Soil Science and Agricultural Chemistry of the L’viv National Agrarian University; determination of humus content – according to DSTU 4289:2004, and that of its labile forms – in accordance with DSTU 4732:2007, fraction-group composition – by Ponomare- va-Plotnikova’s method, according to the measurement procedure 31-497058-008-2002. Results. The use of organo-mineral fertilizer system in short fi eld crop rotation with the saturation of organic fertilizers of 15 t/ha of crop rotation contributes to the humus content increase by 0.7 % after the third rotation in 0–40 cm layer of dark gray podzolic soil, the increase in the share of stable forms of humic compounds up to 57–59 % and the increase in the ratio of R HA :R FA to 1.3–1.4. The study demonstrated very high dependence of amount of gross energy reserves in the humus on the R HA :R FA ratio. Conclusions. The combined application of organic fertili- zers in the form of manure, non-market of the crop (straw) and siderate, along with mineral fertilizers is re- commended in short fi eld crop rotations of Western Forest-Steppe of Ukraine toensure expanded reproduction of fertility of dark gray podzolic soil, improvement of its humus status, increase in gross energy reserves and the share of the stable forms and humic acids in the humus.


2018 ◽  
Vol 18 (2) ◽  
pp. 134-151
Author(s):  
Andrea Circolo ◽  
Ondrej Hamuľák

Abstract The paper focuses on the very topical issue of conclusion of the membership of the State, namely the United Kingdom, in European integration structures. The ques­tion of termination of membership in European Communities and European Union has not been tackled for a long time in the sources of European law. With the adop­tion of the Treaty of Lisbon (2009), the institute of 'unilateral' withdrawal was intro­duced. It´s worth to say that exit clause was intended as symbolic in its nature, in fact underlining the status of Member States as sovereign entities. That is why this institute is very general and the legal regulation of the exercise of withdrawal contains many gaps. One of them is a question of absolute or relative nature of exiting from integration structures. Today’s “exit clause” (Art. 50 of Treaty on European Union) regulates only the termination of membership in the European Union and is silent on the impact of such a step on membership in the European Atomic Energy Community. The presented paper offers an analysis of different variations of the interpretation and solution of the problem. It´s based on the independent solution thesis and therefore rejects an automa­tism approach. The paper and topic is important and original especially because in the multitude of scholarly writings devoted to Brexit questions, vast majority of them deals with institutional questions, the interpretation of Art. 50 of Treaty on European Union; the constitutional matters at national UK level; future relation between EU and UK and political bargaining behind such as all that. The question of impact on withdrawal on Euratom membership is somehow underrepresented. Present paper attempts to fill this gap and accelerate the scholarly debate on this matter globally, because all consequences of Brexit already have and will definitely give rise to more world-wide effects.


2018 ◽  
Author(s):  
C. Coy ◽  
A.V. Shuravilin ◽  
O.A. Zakharova

Приведены результаты исследований по изучению влияния промышленной технологии возделывания картофеля на развитие, урожайность и качество продукции. Выявлена положительная реакция растений на подкормку K2SO4 в период посадки. Корреляционно-регрессионный анализ урожайности и качества клубней выявил высокую степень достоверности результатов опыта. Содержание нитратов и тяжелых металлов в клубнях было ниже допустимых величин.The results of studies on the impact of industrial technology of potato cultivation on growth, yield and quality of products. There was a positive response of plants to fertilizer K2SO4 in the period of planting. Correlation and regression analysis of yield and quality of tubers revealed a high degree of reliability of the results of experience. The contents of nitrates and heavy metals in tubers was below the permissible values.


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