scholarly journals DYNAMICS OF THE CONTENT OF PHOSPHORUS MOBILE COMPOUNDS IN SOILS OF THE TRANSCARPATHIAN REGION

2021 ◽  
Vol 29 ◽  
pp. 154-159
Author(s):  
А. FANDALYUK ◽  
I. KOMAR ◽  
A. CHOPAK
Keyword(s):  
Soil Acidity ◽  
Phosphorus Compounds ◽  
Mobile Phosphorus

The distribution of soils by the content of mobile phosphorus compounds in the soils of the Transcarpathian region according to the results of ecological and agrochemical survey conducted during the VIII - XI rounds (2001 - 2020) is highlighted. Keywords: soil, ecological and agrochemical survey, mobile phosphorus compounds, soil acidity.

scholarly journals AGRO-ECOLOGICAL SUBSTANTIATION OF THE MELIORATIVE ACTIVITIES TO IMPROVE THE STATE OF SOILS OF KALINOVSKY DISTRICT

2019 ◽  
pp. 220-230
Author(s):  
Yuri Shcatula
Keyword(s):  
Agricultural Production ◽  
Soil Acidity ◽  
Well Being ◽  
The State ◽  
Ecological State ◽  
Acidic Soils ◽  
Mobile Phosphorus ◽  
State Of The Environment

Agricultural production is one of the factors for the deterioration of the agro-ecological state of the environment and the anthropogenic-man-made changes in all its components. After analyzing the results of the research, it can be argued that the soils of the Kalinovsky region are characterized as medium-provided with humus, an indicator in the range of 2.21-4.01%. The content in the topsoil of mobile phosphorus is 10.0 mg/100 g of soil, mobile potassium 8.3 mg./100 g of soil related to the well-being, salt pH is 5.9. To carry out reclamation measures and reduce the areas of soil acidity to neutral and close to them values, it is necessary to have highly acidic soils with pH of salt. 4.5 and Нr 5.4 mg.eq/100 g produce lime with a rate of 5.4 t/ha; average oxygen with pH of sol. 4.8 and Нr 4.7 mg.eq/100 g to lime with the norm of lime 4.7 t/ha and slightly acid with pH of salt 5.4 and Hr 3.1 mg. Eq/100 g – 3.1 t/ha.

scholarly journals The change of the main agrochemical indicators of the sod-podzolic soil for the submission of the municipal wasterwater under the artichoke

2021 ◽  
Vol 12 (3) ◽  
pp. 66-75
Author(s):  
V. I. Lopushniak ◽  
◽  
G. M. Hrytsuliak ◽  
Keyword(s):  
Sewage Sludge ◽  
Podzolic Soil ◽  
Soil Layer ◽  
Fertilizer Application ◽  
Mineral Nitrogen ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
Concentration Coefficient ◽  
Mobile Phosphorus ◽  
Control Variant

The studies have shown that the introduction of sewage sludge and compost made on its basis, significantly affects the change in the agrochemical parameters of the sod-medium-podzolic soil, increasing the content of the alkaline hydrolysed nitrogen compounds by 2.2 – 13.4 mg/kg of the soil compared to with control and determining the size of its values at the level of 51.2 – 56.5 mg/kg of the soil in the upper (0 – 20 cm) and 27.9 – 31.6 mg/kg – in the lower (20 – 40 cm) soil layer. The content of the ammonium nitrogen compounds in the variants with the fertilizer application fluctuated in a small range of the values (16 – 21 mg/kg of soil) and increases under the influence of increasing fertilizer doses. Together with the change in the content of the nitrate nitrogen, this contributed to an increase in the content of the mineral nitrogen compounds in the soil in the range of 18.5 – 23.4 mg/kg of the soil in arable (0 – 20 cm) and 19.8 – 21.9 mg/kg of the soil – in subsoil (20 – 40 cm) layers, which by 1.7 – 2.2 mg/kg of the soil exceeded the control variant. The highest indicators of the mineral nitrogen compounds were recorded in the variant where the highest dose of the sewage sludge was applied – 40 t/ha and mineral fertilizers (N10P14K58). Despite the wide range of the nitrogen content values of the alkaline hydrolysed compounds and mineral nitrogen compounds, their ratio remained stable and was 2.3 – 2.6 in the upper and 1.3 – 1.5 in the lower (20 – 40 cm) soil layer, and also decreased with the increasing dose of the fertilizer. That is, this indicator did not change significantly depending on the fertilizer application rate. The content of the mobile phosphorus compounds in the variants with the use of the fertilizers fluctuated in the range of the values (77.5 – 98.5 mg/kg of the soil) and increased under the influence of the introduction of the sewage sludge and compost based on it, which is 14.6 – 35.6 mg/kg of the soil was dominated by the control indicators. The highest rates of the mobile phosphorus compounds were recorded in the variant where the sewage sludge were applied – 40 t/ha and N10P14K58. The introduction of the sewage sludge at a rate of 20 – 40 t/ha contributed to an increase in the content of the potassium metabolites at the level of 89.3 – 97.2 mg/kg of the soil in the upper (0 – 20 cm) and 83.1 – 93.4 mg/kg – in the lower (20 – 40 cm) layer, which exceeded the indicators of the control variant by more than 42.1 mg/kg of the soil. The content of the potassium metabolic compounds increased somewhat less with the introduction of the composts based on the sewage sludge and straw. The results of the correlation-regression analysis indicate that the phosphorus concentration coefficient in the soil largely depends on the content of its mobile compounds and is marked by the coefficient of the determination R2 = 0.70. The potassium concentration coefficient is closely (R2 = 0.91) correlated with the content of its metabolic compounds in the soil.

Noninvasive Investigation of Cerebral Ischemia by Phosphorus Nuclear Magnetic Resonance

PEDIATRICS ◽  
1982 ◽  
Vol 70 (2) ◽  
pp. 310-313
Author(s):  
D. T. Delpy ◽  
R. E. Gordon ◽  
P. L. Hope ◽  
D. Parker ◽  
E. O.R. Reynolds ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Human Subjects ◽  
Newborn Infants ◽  
Phosphorus Compounds ◽  
Mobile Phosphorus ◽  
Brain Substance ◽  
The Brain ◽  
Nuclear Magnetic

Brain damage in newborn infants who require intensive care commonly results from cerebral hemorrhage or ischemia leading to infarction.1 Hemorrhages are easy to detect with ultrasound2,3 or computed tomography,4 but neither of these techniques reliably identifies ischemic lesions until loss of brain substance has occurred. Phosphorus (31P) nuclear magnetic resonance (NMR) can be used to measure, noninvasively, the relative concentrations of mobile phosphorus compounds involved in energy metabolism in living systems,5 including the brain of animals in vivo.6,7 Intracellular pH can also be estimated. With the introduction of surface radiofrequency coils6 and topical NMR,8 it has recently become possible to make measurements in human subjects, and these methods are already proving valuable for exploring disorders of muscle (references 9 to 11, and M. J. Dawson, R.H.T. Edwards, R. E. Gordon, et al, unpublished data, 1982).

scholarly journals Isolation and study of promising strains of phosphate-mobilizing microorganisms for the creation of biofertilizer

2020 ◽  
Vol 99 (3) ◽  
pp. 36-42
Author(s):  
Nariman Zhappar ◽  
◽  
Valerij Shaikhutdinov ◽  
Bakhytzhan Myrzabayev ◽  
Kanatbek Zeinelov ◽  
...  
Keyword(s):  
Culture Media ◽  
Soil Analysis ◽  
Phosphorus Compounds ◽  
Serratia Plymuthica ◽  
Dissolved Phosphorus ◽  
Mobile Phosphorus ◽  
Biochemical Studies ◽  
Bacillus Spp ◽  
Collection Strain ◽  
Physiological And Biochemical

The article describes the process of isolation and study of strains of phosphate-mobilizing microorganisms. As a result of soil analysis, the selected 9 samples contain a sufficient amount of total nitrogen, humus and mobile phosphorus compounds for the development of microorganisms. As a result of the isolation of phosphate-mobilizing microorganisms, 23 mono-isolates were selected. After incubation of the flasks, analyzes for the content of dissolved phosphorus and pH in the culture media were carried out. As a result, the highest content of dissolved phosphorus was obtained by incubation of monoisolates No. 9 and 20, which were 3.57 g/l and 2.55 g/l, respectively. Also, the pH of the medium in these monoisolates showed the lowest values: 5.4 and 5.7, respectively. Monoisolates No. 9 and 20 are named FT1 and FT2, respectively. Based on physiological and biochemical studies, isolated monoisolates were identified as Bacillus megaterium FT1 and Bacillus sp. FT2. As a result of studying phosphate-mobilizing activity in the isolated strains of soil phosphate mobilizing microorganisms and the collection strain, the new strain of B. megaterium FT1 showed the highest phosphate mobilizing activity, where 100 % of phosphorus in the medium were dissolved within 120 hours. The yield of dissolved phosphorus in the medium with the strains of Bacillus spp. FT2 and Serratia plymuthica Nl1 were 50.0 5 and 54.2 %, respectively, for 168 hours.

scholarly journals The effects of calcareous sapropel application on the changes of Haplic Luvisols chemical properties and crop yield

2011 ◽  
Vol 51 (No. 12) ◽  
pp. 539-544 ◽  
Author(s):  
E. Bakšienė ◽  
V. Janušienė
Keyword(s):  
Crop Rotation ◽  
Soil Acidity ◽  
Sandy Loam ◽  
Chemical Properties ◽  
Winter Rye ◽  
Exchangeable Bases ◽  
Mobile Phosphorus ◽  
Term Experiment ◽  
Long Term Experiment

The possibilities to use sapropel for fertilisation have been investigated at the Voke Branch of the Lithuanian Institute of Agriculture since 1984. The experiments were carried out on sandy loam Haplic Luvisols in the crop rotation (maize, barley, clover, winter rye, potatoes, oats) with the application of 50, 100, 150, 200 t/ha rates of dry calcareous sapropel and 30 t/ha of dry manure on the background of mineral fertilisers. Sapropel was applied only to the first crop (maize) in the rotation (in 1984). Manure was applied to the first crop in each crop rotation (in 1984, 1990 and 1996). Summarised results of a long-term experiment showed that by the end of the second (after 12 years) and third (after 18 years) rotation the effect of sapropel on soil chemical properties was positive. Calcareous sapropel reduced soil acidity, increased the amount of exchangeable bases (Ca + Mg). Under the influence of sapropel the contents of organic carbon and total nitrogen increased as well. The amount of mobile phosphorus increased, and mobile potassium decreased. Sapropel improved the composition of humus (C<sub>HA</sub>:C<sub>FA</sub> = 0.74&ndash;0.77; in control = 0.71). The results of investigations have shown that after 18 years of application the higher rates (150, 200 t/ha) of dry sapropel increased the productivity of crops. The highest rate of sapropel (200 t/ha) was almost of the same effectiveness as manure applied in every rotation.

The effect of agrochemical loading on the migration mobile phosphates in profile dark gray podzolized soil

2017 ◽  
Vol 2 (93) ◽  
pp. 35-38
Author(s):  
S.G. Korsun ◽  
A.V. Davydiuk ◽  
M.O. Panasiuk
Keyword(s):  
Organic Fertilizers ◽  
Phosphorus Compounds ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Natural Level ◽  
Systematic Application ◽  
Mobile Phosphorus ◽  
Organic And Mineral Fertilizers ◽  
The Right ◽  
Statistical Results

The purpose of the study was to investigate the direction of migration processes of mobile phosphorus in the dark gray profile of podzolized soil for the long systematic application of various doses of organic and mineral fertilizers. Methods. Laboratory and mathematical-statistical. Results. The results of researches on studying migration processes of mobile phosphorus in the profile of dark gray podzolized soil under the influence of agrochemical loading are given. It was established that the application of mineral phosphates in the dose P74 on the fone of N75K83 and organic fertilizers on the dark gray podzolized soils of the right bank of the Forest steppe is sufficient for the expanded reproduction of the natural level of factor the capacity phosphates for preventing the migration of phosphorus compounds in the lower horizons of the soil.

scholarly journals Influence of Fertilizer Norms on Root Mass, Nutrient Quantity and Chemical Composition of Lucerne

2019 ◽  
Vol 5 (12) ◽  
pp. 219-222
Author(s):  
S. Khalilov
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Soil Fertility ◽  
Physical Properties ◽  
Phosphorus Compounds ◽  
Mineral Fertilizers ◽  
Root Mass ◽  
Mobile Phosphorus ◽  
Positive Effect

The results of the effect of fertilizers on the root mass, chemical composition and amount of alfalfa nutrients Medicago, (Fabaceae). Along with this, when the root mass is decomposed, the soil is enriched with mobile phosphorus compounds. It was found that the application of mineral fertilizers in the ratio of N60P90K60 significantly increases the root mass. An increase in root mass, along with an increase in organic matter, has a positive effect on the amount of nutrients in the soil, improves water–physical properties and increases soil fertility. 125.7–235.8 kg/ha of nitrogen, 26.1-58.7 kg/ha of phosphorus and 81.1–163.3 kg/ha of potassium enter the soil.

scholarly journals Influence of using fertilizers on fertility indices of sod-podzolic soils and productivity of short-term crop rotation of Polissya

2021 ◽  
Author(s):  
A. Egorov ◽  
N. Zhidok ◽  
E. Grischenko ◽  
I. Shabanova
Keyword(s):  
Crop Rotation ◽  
Green Manure ◽  
Humus Content ◽  
Arable Land ◽  
Crop Rotations ◽  
Phosphorus Compounds ◽  
Mineral Fertilizers ◽  
Podzolic Soils ◽  
Mobile Phosphorus ◽  
Positive Balance

The influence of litter manure and straw as fertilizers in pure form and in combination with manure, green manure and mineral fertilizers on the content of humus and basic nutrients in sod-podzolic soil has been studied. A significant effect on the change of humus content on sod-podzolic soils depending on fertilizer systems has been established. The highest indicators of humus content in the soil were found in the variants with 40 t/ha of manure, 0.97–1.14% and 1.17–1.23%, respectively, and straw 4 t/ha in combination with lupine green manure — 0.94–1.15% and 1.16–1.25%. The most significant increase in humus content per rotation was observed in sidereal crop rotation, against the background without fertilizers the indicator increased by 0.05–0.29%, against the background of N40P40K120 application — by 0.03–0.21%, in crop rotation — 0.05–0.19% and 0.01-0.09%, respectively. Analyzing the dynamics of the content of easily hydrolyzed nitrogen, it was found that the greatest growth both at the beginning and at the end of crop rotation provided options with the introduction of 40 t/ha of manure (+69…+85 mg/kg of soil), 4 t/ha of straw with half dose of manure (+63…+82 mg/kg of soil) and straw with green manure (+71…+80 mg/kg of soil). The application of manure, straw and plowing of green manures contributed to the increase of the content of mobile phosphorus compounds from 9 to 69 mg/kg of soil on the background without fertilizers and 38 to 67 mg/kg of soil on the background N40P40K120. The combination of straw with manure and straw with green manure for the application of mineral fertilizers helped to increase the content of mobile phosphorus compounds to the level recorded in the variant for the application of 40 t/ha of manure, and in some versions of the experiment even exceed it. It was found that the deficit-free and positive balance of potassium for rotation of crop rotation and sidereal crop rotation was provided by variants with 4 t/ha of straw in combination with 20 t/ha of manure and 4 t/ha of straw in combination with lupine green manure against N40P40K120. Balances and productivity of arable land use in short-rotation crop rotations of Polissya are calculated. In crop rotation, the humus balance is negative for the alienation of lupine green mass for fodder. Variants with application of 10 t / ha of crop rotation area of manure (–0.03 t/ha) and 1 t/ha of straw with half dose of manure (–0.1 t/ha) on the background of N35P35K85 application allowed to get as close as possible to the deficit-free balance of humus. In sidereal crop rotation, a positive balance of humus is observed with the application of 10 t/ha of manure (+0.21…+0.29 t/ha), 1 t/ha of straw in combination with 5 t/ha of manure, 22 t/ha) and 1 t/ha of straw in combination with green manure (+0.09… +0.18 t/ha). Close to the deficit-free balance of humus is the option with the introduction of 1 t/ha of straw in its pure form. An alternative to manure in Polissya should be the use of straw in combination with green manure (including lupine), which will help preserve and reproduce the humus content in the soil, improve the balance of nutrients and increase the productivity of arable land in crop rotations.

scholarly journals CHARACTERISTICS OF CHEMICAL COMPOSITION OF UPPER HORIZONS OF SOILS OF ROADSIDE PHYTOCENOSIS

2018 ◽  
pp. 95-100
Author(s):  
Gulsem Salimovna Alimova ◽  
Alena Yurievna Tokareva ◽  
Elena Ivanovna Popova
Keyword(s):  
Soil Salinization ◽  
Phosphorus Compounds ◽  
Biogenic Elements ◽  
Nitrate Content ◽  
Mobile Phosphorus ◽  
Nitrite Nitrogen ◽  
Synanthropic Species ◽  
Low Degree ◽  
Chloride Sulfate ◽  
Synanthropization Index

Geobotanical descriptions of roadside phytocenoses of south of the Tyumen region were made within the boundaries of five administrative districts: Uporovsky, Zavodoukovsky, Yalutorovskiy, Yarkovsky, Tobolsk. Soil cuts were taken at each site and their morphological and chemical characteristics were determined. The biogenic composition (nitrite nitrogen, nitrates, mobile phosphorus compounds, exchange ammonium), the degree and type of soil salinization have been determined. The investigated soils, in accordance with the taxonomy of A. G. Dyukarev, belong to sod podzolic and podzolic types, typical subtype, ordinary genus. As for degree of salinity, soils are non-saline. Type of salinity is chloride-sulfate, sulfate. The reaction of the aqueous extract medium is weakly acidic. Biogenic elements determined during the study are concentrated to a greater extent in the upper horizons of the soil and are characterized by a low degree of availability of available phosphates in all areas from 28 to 50 mg/kg (movable forms). The nitrate content in all areas is in the same range, from 0.2 to 0.8 mg/kg. Distribution of ammonium metabolic (4.5-23.6 mg/kg), nitrates vary from 0.2 to 0.8 mg/kg. The content of nitrite nitrogen in all soil samples is minimal: less than 0.037 mg/kg of soil. The investigated phytocenoses are characterized by poor and stable floral composition. Most of the total projective cover of studied phytocenoses account for synanthropic species. Synanthropization index of the flora of the studied phytocenoses lies within 43-64%.

FERTILIZATION SYSTEM AS A WAY OF SOIL FERTILITY AND STABILIZATION OF FIELD CROP ROTATION PRODUCTIVENESS

1970 ◽  
pp. 38-41
Author(s):  
V. T. Sinegovskaya ◽  
E. T. Naumchenko
Keyword(s):  
Soil Fertility ◽  
Crop Rotation ◽  
C:N Ratio ◽  
Mineral Fertilizer ◽  
Organic Fertilizers ◽  
Nitrogen And Phosphorus ◽  
Rotation System ◽  
Mobile Phosphorus ◽  
Crop Rotation System ◽  
Fertilizer System

The article presents the results of comparative evaluation of the efficiency of the long-term application of mineral and organic fertilizers in the crop rotation system. It was found that the application of the mineral fertilizer system increased the value of hydrolytic acidity of the soil from 4,30 to 5,29 mg-eq per 100 g of soil, the indicator of metabolic acidity decreased from 5,2 to 4,9 pH units. By the end of the 11th rotation for both fertilizer systems, the content of mobile phosphorus increased by more than 4 times relative to the initial value, its mobility indicator – by 2,2-3,2 times compared with the control. The use of the organo-mineral system was accompanied by an increase in the content of humus by 0,35 % and a decrease in the C:N ratio from 11,2 to 8,9. The increased productivity of wheat was revealed when applying nitrogen and nitrogen-phosphorus fertilizers against the background of prolonged use of the mineral and organo-mineral fertilizer system. The change in wheat productivity by 56 % depended on the content of mineral nitrogen, mobile phosphorus, humus in the topsoil, and on the phosphate ion mobility. Soybean productivity depended on soil fertility indicators only by 24 %: the relationship between soybean productivity and the mineral forms of nitrogen and phosphorus is weak and direct, between productivity and P2O5 mobility - weak and inverse, with humus - moderate and direct.

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