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Artykuły w czasopismach na temat „Soils Calcium content”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 28 stycznia 2023

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1

Cichota, R., I. Vogeler, N. S. Bolan, and B. E. Clothier. "Cation influence on sulfate leaching in allophanic soils." Soil Research 45, no. 1 (2007): 49. http://dx.doi.org/10.1071/sr06070.

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We have examined the influence of the ionic composition of the soil solution on the movement of sulfate and calcium in 2 New Zealand soils with differing allophane content. For this study, we have carried out a series of miscible displacement experiments using repacked and intact soil columns, in which sulfate was applied in the presence of either calcium or potassium as the accompanying cation. Our results showed that sulfate leaching was significantly retarded in the soil with higher allophane content when applied with calcium. On the other hand, no effects were observed for all studied soil
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2

Rogóż, Antoni, and Monika Tabak. "Contents of selected macroelements in soils, potatoes and fodder beets at variable soil reaction / Zawartość wybranych makroelementów w glebach oraz w ziemniakach i burakach pastewnych przy zmiennym odczynie gleby." Soil Science Annual 66, no. 1 (March 1, 2015): 3–9. http://dx.doi.org/10.1515/ssa-2015-0012.

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Abstract The aim of the research was to determine the concentration of selected macroelements in soil and in root crops (potatoes and fodder beets) at a variable soil reaction. The changes in pH values in the studied soils influenced the content of these elements in soluble forms determined in 0.1 mol HCl·dm-3. A statistical analysis showed a positive relationship between the soil pH value and the calcium and magnesium contents in a form close to the total form, as well as the content of soluble forms of phosphorus, calcium, and magnesium. The content of the studied macroelements, i.e. phospho
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3

Yildiz, Ercan, Mehmet Yaman, and Ahmet Sümbül. "RELATIONSHIPS BETWEEN PHYSICAL AND CHEMICAL PROPERTIES OF SOILS AND PLANT NUTRIENT CONTENT OF LEAVES IN THE APPLE ORCHARDS." Current Trends in Natural Sciences 11, no. 21 (July 31, 2022): 139–44. http://dx.doi.org/10.47068/ctns.2022.v11i21.016.

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This study was carried out in 42 orchards located in the lowland of Develi, where the apple cultivation is intense in Kayseri province. The analyses were made to determine pH, CaCO3, EC, organic matter, available phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), manganese (Mn) and copper (Cu) in soil samples and nitrogen (N), P, K, Ca, Mg, Fe, Zn, Mn, Cu, and boron (B) in leaf samples. In the study, the relationships between some physical and chemical properties of the soils and the plant nutrient content of the leaves were evaluated by correlation analysis. In
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4

PEKCAN, Tülin, Bihter ÇOLAK ESETLİLİ, Hatice Sevim TURAN, and Erol AYDOĞDU. "Determination of Nutritional Status of Northwest Anatolia (North Aegean) Olive Growing Areas." MAS Journal Of Applied Sciences 7, no. 11 (March 10, 2022): 210–20. http://dx.doi.org/10.52520/masjaps.221.

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The study was carried out to determine the productivity of olive plantations in 8 different districts of The North Aegean Region. For this purpose, soil and leaf samples were taken simultaneously from 26 different olive groves. 69.23% of the investigated surface soils (0-30 cm) are sandy loam, and 57.69% of the subsurface soils (30-60 cm) are sandy loam. It was determined that more than 50% of the soils were slightly alkaline and the lime contents were low at both depths. It is seen that the organic matter contents of 11% of the surface soils and 8% of the subsurface soils are low. Nitrogen co
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Al-Tarbouli, Nameer Hamed Yassin. "Adsorption and physicochemical release of iron ions in soils with different content of Calcium Carbonate and Calcium Sulfate." Tikrit journal for agricultural sciences 22, no. 3 (September 30, 2022): 137–47. http://dx.doi.org/10.25130/tjas.22.3.16.

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Three soils of different content of gypsum and lime were selected, the first soil (G1) and the second soil (G3), were obtained near the fields of the Faculty of Agriculture, Tikrit University. As for the third soil (G5), was taken from the AL- alam Village side east of Tikrit city to a depth of (0-10)cm. the proportions of gypsum were 5%, 15%, 25%, and the proportions of lime were 25%, 20%, and 10% for soils G1, G3, and G5, respectively. Ferrous sulfate was added as a source of iron ions added to the three soils in the following proportions (0,10,25,50,100,150,250,500,750) mg.L-1 The concepts
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6

Han, Guilin, Anton Eisenhauer, Jie Zeng, and Man Liu. "Calcium Biogeochemical Cycle in a Typical Karst Forest: Evidence from Calcium Isotope Compositions." Forests 12, no. 6 (May 25, 2021): 666. http://dx.doi.org/10.3390/f12060666.

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In order to better constrain calcium cycling in natural soil and in soil used for agriculture, we present the δ44/40Ca values measured in rainwater, groundwater, plants, soil, and bedrock samples from a representative karst forest in SW China. The δ44/40Ca values are found to differ by ≈3.0‰ in the karst forest ecosystem. The Ca isotope compositions and Ca contents of groundwater, rainwater, and bedrock suggest that the Ca of groundwater primarily originates from rainwater and bedrock. The δ44/40Ca values of plants are lower than that of soils, indicating the preferential uptake of light Ca is
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7

Loveland, P. J., J. Hazelden, and R. G. Sturdy. "Chemical properties of salt-affected soils in north Kent and their relationship to soil instability." Journal of Agricultural Science 109, no. 1 (August 1987): 1–6. http://dx.doi.org/10.1017/s0021859600080904.

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SummarySoil instability, as measured by the dispersion ratios of the reclaimed salt-marsh soils of ca. 70 km2 of north Kent, was assessed on samples taken from 0–15, 35–50 and 70–85 cm depths from sites at the intersects of a 250 m square grid or along transects. The dispersion ratios were related to other soil properties including exchangeable sodium, potassium and magnesium percentages, organic carbon content, calcium carbonate content and electrical conductivity. The dispersion ratio correlates most closely with exchangeable sodium percentage and organic carbon content; weaker correlations
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8

Neff, J. C., J. W. Harden, and G. Gleixner. "Fire effects on soil organic matter content, composition, and nutrients in boreal interior Alaska." Canadian Journal of Forest Research 35, no. 9 (September 1, 2005): 2178–87. http://dx.doi.org/10.1139/x05-154.

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Boreal ecosystems contain a substantial fraction of the earth's soil carbon stores and are prone to frequent and severe wildfires. In this study, we examine changes in element and organic matter stocks due to a 1999 wildfire in Alaska. One year after the wildfire, burned soils contained between 1071 and 1420 g/m2 less carbon than unburned soils. Burned soils had lower nitrogen than unburned soils, higher calcium, and nearly unchanged potassium, magnesium, and phosphorus stocks. Burned surface soils tended to have higher concentrations of noncombustible elements such as calcium, potassium, magn
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9

Elisa, A. A., S. Ninomiya, J. Shamshuddin, and I. Roslan. "Alleviating aluminium toxicity on an acid sulphate soils in Peninsular Malaysia with application of calcium silicate." Solid Earth Discussions 7, no. 4 (October 19, 2015): 2903–26. http://dx.doi.org/10.5194/sed-7-2903-2015.

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Abstract. A study was conducted to alleviate Al toxicity of an acid sulphate soils collected from paddy cultivation area in Kedah, Peninsular Malaysia. For this purpose, the collected acid sulphate soils were treated with calcium silicate. The treated soils were incubated for 120 days in submerged condition in a glasshouse. Subsamples were collected every 30 days throughout the incubation period. Soil pH and exchangeable Al showed positive effect; soil pH increased from 2.9 to 3.5, meanwhile exchangeable Al was reduced from 4.26 to 0.82 cmolc kg−1, which was well below the critical Al toxicity
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10

Zhong, Yuqing, Guanghua Cai, Shiquan Wang, Huajin Qin, Caihong Zhang, and Jiangshan Li. "Influence of Organic Content on the Mechanical Properties of Organic-Rich Soils Stabilized with CaO-GGBS Binder and PC." Water 14, no. 19 (September 28, 2022): 3053. http://dx.doi.org/10.3390/w14193053.

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Organic-rich soil is a typical special soil often encountered in foundation treatment. Previous research has revealed that Portland cement (PC) not only pollutes the environment but is significantly affected by organic matter during its hydration and cementation. Although quicklime (CaO)-GGBS binder (CG) is an effective alternative to PC, its efficiency in treating organic-rich soils has not been studied. In this study, organic-rich soil was treated with two binders of CG and PC. The physical, mechanical, and chemical characteristics of the stabilized soils were tested at various organic conte
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11

Adeleke, Blessing, John Kinuthia, and Jonathan Oti. "Strength and Swell Performance of High-Sulphate Kaolinite Clay Soil." Sustainability 12, no. 23 (December 5, 2020): 10164. http://dx.doi.org/10.3390/su122310164.

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Expansion of soils has been found to produce significant negative economic and environmental impact on various civil engineering infrastructure. This impact is more deleterious in soils containing sulphates, when treated with calcium-based stabilizers such as Lime and/or Portland cement (PC). The reported study investigated the strength and swell characteristics of Kaolinite clay artificially induced with high levels of Gypsum (sulphate) contents after stabilization with CEM I (PC), which is a calcium-based stabilizer. An optimum stabilizer content/Gypsum dosage, aimed at investigating the max
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12

Mohammadi, Shima. "Employment of chemical autography method based on ion-exchange membranes for estimation of content of extracted cations within field conditions." АгроЭкоИнфо 1, no. 49 (February 5, 2022): 12. http://dx.doi.org/10.51419/202121112.

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The executed work supposed estimation of movable cations content in soils within soil of undestroyed structure in field conditions by employment of cation and ion-exchange membranes of MK-40 and MA-ЭДТА types. It is discovered that when increasing humus content and cultivation state of soddy podzolic soils the share of positively charged calcium becomes lower. At Сa Ln+/Ca Ln- from 0,7 up to 0,003; Мg from 0.22 to 0,08. So, MA-ЭДТА type membrane in comparison with MK-H membrane absorbs more calcium than Mg, Fe in comparison with Mn and especially calcium in comparison with K. Keywords: SOIL, M
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13

Liu, Hailong, Jiuye Zhao, Yu Wang, Nangai Yi, and Chunyi Cui. "Strength Performance and Microstructure of Calcium Sulfoaluminate Cement-Stabilized Soft Soil." Sustainability 13, no. 4 (February 20, 2021): 2295. http://dx.doi.org/10.3390/su13042295.

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Calcium sulfoaluminate cement (CSA) was used to stabilize a type of marine soft soil in Dalian China. Unconfined compressive strength (UCS) of CSA-stabilized soil was tested and compared to ordinary Portland cement (OPC); meanwhile the influence of amounts of gypsum in CSA and cement contents in stabilized soils on the strength of stabilized soils were investigated. X-ray diffraction (XRD) tests were employed to detect generated hydration products, and scanning electron microscopy (SEM) was conducted to analyze microstructures of CSA-stabilized soils. The results showed that UCS of CSA-stabili
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14

Diomandé, L. B., G. R. Soro, S. Soro, and Et Yao Kouamé A. "CHEMICAL SOIL FERTILITY DIAGNOSIS FOR COTTON CROPPING IN NORTHERN COTE D'IVOIRE." International Journal of Research -GRANTHAALAYAH 9, no. 8 (August 31, 2021): 27–34. http://dx.doi.org/10.29121/granthaalayah.v9.i8.2021.4130.

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The work was conducted in the north of Cote d’Ivoire, central pivot cotton production savannah area, to make the diagnosis of soil fertility for cotton cropping. Cotton cropping, the mainstay of the savannah's economy, suffered from low productivity in relation to the soils chemical properties. Prior cultivation, soils samples were collected at a depth of 0 to 30 cm, collecting 32 simple samples to generate a complete sample. The samples were sent to the soil laboratory to measure the pH unities, CEC, nitrogen, phosphorus, potassium, calcium, magnesium, sodium, iron, zinc, copper and manganese
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15

Clough, A., and J. O. Skjemstad. "Physical and chemical protection of soil organic carbon in three agricultural soils with different contents of calcium carbonate." Soil Research 38, no. 5 (2000): 1005. http://dx.doi.org/10.1071/sr99102.

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The amount of organic carbon physically protected by entrapment within aggregates and through polyvalent cation–organic matter bridging was determined on non-calcareous and calcareous soils. The composition of organic carbon in whole soils and <53 m soil fractions was determined by 13C NMR analysis. High energy photo-oxidation was carried out on <53 m fractions and results from the NMR spectra showed 17–40% of organic carbon was in a condensed aromatic form, most likely charcoal (char). The concept that organic material remaining after photo-oxidation may be physically protected within a
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16

Elisa, A. A., S. Ninomiya, J. Shamshuddin, and I. Roslan. "Alleviating aluminum toxicity in an acid sulfate soil from Peninsular Malaysia by calcium silicate application." Solid Earth 7, no. 2 (March 9, 2016): 367–74. http://dx.doi.org/10.5194/se-7-367-2016.

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Abstract. In response to human population increase, the utilization of acid sulfate soils for rice cultivation is one option for increasing production. The main problems associated with such soils are their low pH values and their associated high content of exchangeable Al, which could be detrimental to crop growth. The application of soil amendments is one approach for mitigating this problem, and calcium silicate is an alternative soil amendment that could be used. Therefore, the main objective of this study was to ameliorate soil acidity in rice-cropped soil. The secondary objective was to
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17

Pukish, Arsen. "STUDY OF THE RESTORATION FEATURES OF SOILS THAT WERE INFLUENCED BY FORMATION WATERS." Scientific Bulletin Series D : Mining, Mineral Processing, Non-Ferrous Metallurgy, Geology and Environmental Engineering 31, no. 2 (2017): 71–76. http://dx.doi.org/10.37193/sbsd.2017.2.10.

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The article presents the studies results on the restoration of saline soils affected by formation waters. Soil restoration was carried out using solutions of various water-soluble salts. The author determined that treatment of saline soils with a solution of magnesium sulfate at a concentration of 0,3 mol/dm3 helps to decrease the content of chlorides, sodium, calcium, while the content of magnesium and sulfates increases, but the total content of toxic salts in the soil decreases by 60,9%.
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18

FUJIMORI, Yuichi, Masaharu FUKUE, Yoshihisa KATO, Kazuo MASUBUCHI, and Takuya SASAJIMA. "SEDIMENTOLOGY BASED ON CALCIUM CARBONATE CONTENT FOR ALLUVIAL SOILS." Doboku Gakkai Ronbunshuu C 63, no. 4 (2007): 1163–74. http://dx.doi.org/10.2208/jscejc.63.1163.

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19

Choi, Sun-Gyu, Sung-Sik Park, Shifan Wu, and Jian Chu. "Methods for Calcium Carbonate Content Measurement of Biocemented Soils." Journal of Materials in Civil Engineering 29, no. 11 (November 2017): 06017015. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0002064.

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20

Tonkha, O., O. Bukova, O. Pikovska, I. Fedosiy, O. Menshov, and A. Shepel. "SILICON CONTENT, PHYSICAL AND CHEMICAL PROPERTIES OF SOILS OF THE KHMELNYTSKY REGION OF UKRAINE." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 3 (90) (2020): 85–90. http://dx.doi.org/10.17721/1728-2713.90.12.

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Silicon plays the significant role in the growth and development of plants, their resistance to stress conditions. However, there is limited research on the content of various forms of silicon in soils, the relationship with soil cations, which is particularly relevant in the context of intensive agriculture and climate aridization in Ukraine. The purpose of the present study was to determine the content of silicon compounds of different mobility in the arable soils of the Khmelnytsky region, the spatial variation of these parameters, and to detect the dependence between the content of silicon
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21

Dai, Lei, and Xiao Xuan Deng. "The Relationship between Calcium Hydroxide Concentration in Pore Solution and the Strength of Stabilized Soils." Advanced Materials Research 989-994 (July 2014): 19–22. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.19.

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Under the same cement content, the stabilized soils, made of the soils with similar physical properties, may be significant difference in the strength. In this research, three groups of soils were selected, and the soils in each group are similar in physical properties. Strength and ions concentration in pore solution of the stabilized soils were investigated. The result reveals that calcium hydroxide (CH) concentration in pore solution of the stabilized soils might not reach to saturation due to soil consuming Ca2+and thus cause calcium silicate hydrates gels (C-S-H) and calcium aluminates hy
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22

Kosiorek, Milena, and Mirosław Wyszkowski. "Macroelement content in plants after amendment application to cobalt-contaminated soil." Journal of Soils and Sediments 21, no. 4 (February 26, 2021): 1769–84. http://dx.doi.org/10.1007/s11368-021-02907-0.

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Abstract Aim The study was undertaken to determine the effect of amendments used in remediation of cobalt-contaminated soil on the macroelement content of all organs of spring barley (the main crop) and white mustard (the after-crop). Methods In the experiment, six blocks were selected: without amendments; with manure (bovine, granulated); clay; charcoal; zeolite; and with calcium oxide (50%). In each of the blocks, increasing doses of cobalt were applied: 0, 20, 40, 80, 160, and 320 mg kg−1 of soil. Results Cobalt-contaminated soil and amendments application had a significant effect on macroe
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23

Zheng, Xuefang, Bo Liu, Yujing Zhu, Jieping Wang, Haifeng Zhang, and Ziran Wang. "Bacterial community diversity associated with the severity of bacterial wilt disease in tomato fields in southeast China." Canadian Journal of Microbiology 65, no. 7 (July 2019): 538–49. http://dx.doi.org/10.1139/cjm-2018-0637.

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Tomato bacterial wilt caused by Ralstonia solanacearum is a devastating plant disease. The aims of this study were to investigate the relationship among soil nutrients, rhizobacterial community, and abundance of R. solanacearum, and to gather useful information for controlling the disease. Fifteen tomato rhizosphere soils were collected from three regions, encompassing five disease grades. Then, soil physicochemical properties and rhizobacterial communities were investigated. The content of soil organic carbon (SOC), total phosphorus (TP), total potassium (TK), and exchangeable calcium was sig
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24

Liljestrand, H. M., and S. M. Parten. "Design of On-Site Treatment Systems in Caliche Soils." Water Science and Technology 28, no. 10 (November 1, 1993): 83–87. http://dx.doi.org/10.2166/wst.1993.0210.

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Caliche soils, weathered limestone soils of high calcium carbonate content and and low organic content, are common in regions with limestone sedimentary geology and arid to semi-arid climate. Currently, there are no standards other than hydraulic soil properties for the design and construction of on-site wastewater treatment systems in caliche soils. Experimental studies were performed to investigate biological transformation rates for organic carbon to inorganic carbon and organic nitrogen to nitrate, using four different caliche soils and the range of recommended hydraulic loading rates. The
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25

Barzegar, AR, RS Murray, GJ Churchman, and P. Rengasamy. "The strength of remolded soils as affected by exchangeable cations and dispersible clay." Soil Research 32, no. 2 (1994): 185. http://dx.doi.org/10.1071/sr9940185.

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The tensile strengths of remoulded samples of five Australian soils with differing clay type, texture and shrink-swell potential were measured as a function of exchangeable cations (Na, Ca and Mg) and exchangeable sodium percentage (ESP). Spontaneously and mechanically dispersible clays were also determined as a function of ESP. The tensile strength changed with the nature of the exchangeable cation, clay content and amounts of spontaneously and mechanically dispersible clay. In Ca-soils, the tensile strength was highly correlated with clay content and CEC. Regression analyses of data for soil
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26

Olego, Miguel Ángel, Mateo D. Cuesta-Lasso, Fernando Visconti Reluy, Roberto López, Alba López-Losada, and Enrique Garzón-Jimeno. "Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil." Plants 11, no. 21 (October 27, 2022): 2871. http://dx.doi.org/10.3390/plants11212871.

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In addition to aluminum and other heavy metal toxicities, acidic soils also feature nutrient deficits that are not easily overcome by merely adding the required amounts of mineral fertilizers. One of the most critically scarce nutrients in acidic soils is phosphorus, which reacts with aluminum and iron to form phosphates that keep soil phosphorus availability significantly low. Liming ameliorates acidic soils by increasing pH and decreasing aluminum contents; however, it also increases the amount of calcium, which can react with phosphorus to form low-solubility phosphates. In the present work
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27

Bonomelli, Claudia, Pilar M. Gil, and Bruce Schaffer. "Effect of Soil Type on Calcium Absorption and Partitioning in Young Avocado (Persea americana Mill.) Trees." Agronomy 9, no. 12 (December 3, 2019): 837. http://dx.doi.org/10.3390/agronomy9120837.

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A two-year study was conducted to determine how soil texture affects calcium (Ca) absorption and partitioning in potted ‘Hass’ avocado trees. Trees were planted in 200 L pots in one of four soil types: clay (C), clay loam (CL), sandy loam (SL) or sand (S). Prior to planting, Ca content in each soil was in the normal range of availability, although the Ca concentration was highest in C soil. After two years of tree development, dry weights of shoots and roots were significantly higher in the SL and S soils than in C soil. Trees in the C soil had higher wood dry weight than trees in SL or S soil
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28

Humeniuk, H. B., V. O. Khomenchuk, N. G. Zinkovska та N. V. Moskalyuk. "ПОРІВНЯЛЬНА ХАРАКТЕРИСТИКА ВМІСТУ КАЛЬЦІЮ ТА СТУПЕНЯ КИСЛОТНОСТІ У ҐРУНТАХ ТЕРНОПІЛЬСЬКОЇ ОБЛАСТІ". Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 78, № 4 (4 червня 2020): 41–49. http://dx.doi.org/10.25128/2078-2357.19.4.7.

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The soils of Ukraine have been well studied, however this did not prevent them from the intensive degradation processes. About a third of the arable land is eroded, about 20% of organic matter is lost, almost all the arable land in the subsoil is compacted, the nutrient forms of mobile phosphorus and especially calcium are significantly reduced, calcium, occupying the bulk of the cation exchange capacity of the soil, serves as a regulator. Calcium is a coagulator of soil colloids, protects them from destruction and removal to the lower horizons of the profile; promotes the formation and preser
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Ihsan Ramadhan, Payizan, and Lazkeen Ahmed Merween Mehmedany. "Zinc Adsorption in Different Calcareous Soils." Journal Of Duhok University 23, no. 2 (December 14, 2020): 118–30. http://dx.doi.org/10.26682/ajuod.2020.23.2.15.

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Zinc adsorption was studied for ten selective representative soils according the difference amount of clay content, calcium carbonate and organic matter in Duhok governorate, Iraqi-Kurdistan region included (Kanimasi-1&2, Batofa, Zakho, Assih, Semeel, Khanke, Faydi, Zawita and Bamarny locations). Samples were air dried and sieved through a 2-mm sieve to study the physical and chemical characteristics of the soils, forms of zinc and it’s adsorption. Results showed the soluble, DTPA extractable zinc (available), CaCl2 extractable zinc (exchangeable) and total zinc ranged between (0.29 – 0.94
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E.S., Koybakova, Mustafayev M.G., and Amanbaeva B.Sh. "Technological methods of improvement of degraded soils under the sowing of legumes and groat cultures of the South Kazakhstan." Ekologiya i stroitelstvo 2 (2016): 22–27. http://dx.doi.org/10.35688/2413-8452-2016-02-004.

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Kazakhstan currently faced with a serious deterioration in the state of natural resources and the environment in all the most important environmental indicators. Almost a third of the agricultural land is now degraded or is seriously threatened, and more than 10 million hectares of potentially arable land in the past has been abandoned. The article presents the results of research to improve the well-being of reclamation of soils of southern Kazakhstan. The studies were conducted in the field and in the lysimeters, with laying of experiments on the introduction of phosphogypsum and deep loosen
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Alleoni, Luís Reynaldo Ferracciú, Otávio Antonio de Camargo, and José Maria Aires Silva Valadares. "CORRELATIONS BETWEEN HOT CALCIUM CHLORIDE-EXTRACTED BORON AND CHEMICAL AND PHYSICAL ATTRIBUTES OF SOME BRAZILIAN SOILS." Scientia Agricola 56, no. 2 (1999): 295–300. http://dx.doi.org/10.1590/s0103-90161999000200006.

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Relationship between soluble boron extracted with a hot CaCl2 0.01 mol L-1 solution and pH; organic carbon; exchangeable cations; cation exchange capacity (CEC); base saturation; total, free and amorphous iron and aluminum oxide contents; clay content; and specific surface area were performed for surface and subsurface samples of five soils. The soils were a Rhodic Hapludox, an Arenic Paleudalf and three Typic Hapludox, all representative soils of the State of São Paulo, Brazil. To quantify the relations between soluble boron and the different soil characteristics, simple linear correlations a
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Jakovljevic, Miodrag, Nikola Kostic, and Svetlana Antic-Mladenovic. "The availability of base elements (Ca, Mg, Na, K) in some important soil types in Serbia." Zbornik Matice srpske za prirodne nauke, no. 104 (2003): 11–21. http://dx.doi.org/10.2298/zmspn0304011j.

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In this paper results are presented of agrochemical and mineralogical analyses of 14 types of important soils in Serbia (Vojvodina and Central Serbia) and total content and availability of base alkali elements (Ca, Mg Na, K) are determined. Total element content was as follows: Ca 2.22%; K 1.77%; Na 0.85% and Mg 0.61%. Total content of alkali metals in the soils investigated and their variations within and between the soil types, is in very good/close correlation with contents of primary and secondary minerals as well as their rates of weathering. Taking in account the average availabilities t
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Hossen, MAM, SA Lira, MY Mia, and AKMM Rahman. "Soil Nutrient Status of Brahmaputra Floodplain Area in Tangail Sadar Upazila for Agricultural Uses." Journal of Environmental Science and Natural Resources 8, no. 2 (February 29, 2016): 11–14. http://dx.doi.org/10.3329/jesnr.v8i2.26856.

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Soil samples from high land, medium high land, medium low land and low land of Brahmaputra Floodplain area showed that pH of the soils were slightly acidic; organic matter (OM) content was medium; total nitrogen (N), available potassium (K) and boron (B) content were low; available phosphorus (P) content was very low; available sulfur (S) and calcium (Ca) content were medium to very high; magnesium (Mg) and zinc (Zn) content were low to optimum; copper (Cu), manganese (Mn) and iron (Fe) content were very high suggesting the fact that soils of this area is moderately suitable for agricultural u
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Navarro-Pedreño, Jose, María Almendro-Candel, Ignacio Gómez Lucas, Manuel Jordán Vidal, Jaume Bech Borras, and Antonis Zorpas. "Trace Metal Content and Availability of Essential Metals in Agricultural Soils of Alicante (Spain)." Sustainability 10, no. 12 (December 1, 2018): 4534. http://dx.doi.org/10.3390/su10124534.

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This article analysed the presence of trace metals (essential elements and pollutants) and soil properties in rural abandoned soils of a Mediterranean region. The soil properties determined were texture, pH, equivalent calcium carbonate, soil organic matter, availability of micronutrients (Fe, Mn, Cu, and Zn), and acid microwave digestion extraction to measure the trace metals considered as main pollutants (Cu, Zn, Cd, Cr, Ni, and Pb). Descriptive statistics and correlations were used to determine the relations among these parameters. pH, soil organic carbon (SOC), and clay were the main prope
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35

Hasanov, R. G., G. S. Hasanov, and V. K. Valiev. "NEUTRALIZATION OF PHENOL-CONTAMINATED SOILS." Chemical Problems 20, no. 2 (2022): 154–63. http://dx.doi.org/10.32737/2221-8688-2022-2-154-163.

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To eliminate the consequences of accidental spill of phenol, the results of neutralization of soils contaminated with phenol are presented. As for the analysis of soils by the geological-lithological section it was found that in areas of phenol contamination the soil has a surface soil-plant layer with a thickness of about 0.5m, then there is a heavy clay layer with a thickness of up to 7.0 m and finally a sand layer saturated with groundwater is observed. It revealed that according to physical and mechanical properties, the solid mineral phase of the soil corresponds to a hard plastic and sem
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Klenov, Boris M., and Mikhail V. Yakutin. "CALCIUM IN SOIL HUMUS OF WEST-SIBERIAN TRANSECT." Interexpo GEO-Siberia 4, no. 2 (July 8, 2020): 64–70. http://dx.doi.org/10.33764/2618-981x-2020-4-2-64-70.

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The paper analyzes the behavior of one of the main components of humus (humic acids - calcium system) depending on the participation of calcium in the biological cycle of substances. The role of calcium in the formation of ecological stability of humic systems is shown, which largely determines the environmentally sustainable agriculture. It is shown that the changeable calcium amounts to no more than a half of its total content in humus horizon of automorphic zonal soils. Within the limits of the transect, the participation of calcium in binding of humic and fulvic acids is distributed accord
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37

Bahloul, Ouassila, Hocine Ziani, and Samir Benmoussa. "Impact of Calcium Chloride on the Microstructure of a Collapsible ‎Soil." Annales de Chimie - Science des Matériaux 46, no. 4 (August 31, 2022): 201–6. http://dx.doi.org/10.18280/acsm.460405.

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The study of the collapse of soils under the effect of flooding is a major problem in soil ‎mechanics. Most of the work done on the treatment of these soils has been devoted to ‎the use of binders of hydraulic or organic types. However, little work has been devoted to the use of salt calcium chloride in ‎collapsible soil treatments.‎ The purpose of this study is to evaluate the effect salt calcium chloride on a reconstituted collapsible soil in the laboratory, at ‎different levels of water content, compaction energy and concentration of the saline solution. The ‎results obtained showed a signi
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Jaworska, Hanna, Agata Bartkowiak, and Szymon Różański. "The influence of anthropogenically increased pH on the content and the mobility of nickel in arable soils in the surroundings of “Małogoszcz” cement plant." Soil Science Annual 64, no. 1 (June 1, 2013): 14–18. http://dx.doi.org/10.2478/ssa-2013-0003.

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Abstract The aim of the conducted research was the evaluation of the influence of increased pH on the content and mobility of nickel in arable soils in the surroundings of Małogoszcz Cement Plant. The physico-chemical properties of the investigated soils were determined by the methods commonly used in soil laboratories. The total content of Ni was determined after mineralization in the mixture of HF and HClO4 acids, and the content of forms available for plants, after the extraction with DTPA solution, using ASA method. The investigated soils are characterized as loamy sands or sands (PTG 2008
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Gersztyn, Leszek, Anna Karczewska, and Bernard Gałka. "Influence of pH on the solubility of arsenic in heavily contaminated soils / Wpływ pH na rozpuszczalność arsenu w glebach silnie zanieczyszczonych." Ochrona Srodowiska i Zasobów Naturalnych 24, no. 3 (September 1, 2013): 7–11. http://dx.doi.org/10.2478/oszn-2013-0031.

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Abstract The aim of this study was to determine the impact of pH on arsenic solubility in soils heavily contaminated by the former arsenic industry. For the purpose of the study, three soil samples were collected from the area affected by ore processing in Złoty Stok. Soils differed in initial pH, calcium carbonate content, organic matter content and total arsenic concentration. The amounts of arsenic released from soils at various pH were measured using extraction tests, where soil samples were shaken with various doses of HCl and NaOH in the presence of 0.01 mol • dm−3 CaCl2 as the backgroun
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Ahmed, Niaz, Umama Habib, Uzma Younis, Inam Irshad, Subhan Danish, Ashfaq Ahmad Rahi, and Tariq Muhammad Munir. "Growth, chlorophyll content and productivity responses of maize to magnesium sulphate application in calcareous soil." Open Agriculture 5, no. 1 (December 9, 2020): 792–800. http://dx.doi.org/10.1515/opag-2020-0023.

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AbstractMagnesium (Mg) is an essential plant macronutrient responsible for modulating many physiological or biochemical processes such as photosynthetic activity, amino acid synthesis and nucleotide metabolism. Agricultural soils with a more-than-adequate availability of calcium (Ca) have inherent Mg deficiency, potentially resulting in overall reduced soil productivity and crop yield potential. We conducted a field experiment to investigate the optimum soil application of Mg to increase crop growth and productivity under calcareous soil conditions. In addition to recommended soil application
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41

Pochernyaeva, E. P., V. O. Okata, O. V. Kotovych, and V. M. Yakovenko. "Influence of irrigated mineralized waters on properties of ordinary chernozem in the conditions of Prysamaria Dniprovske." Ecology and Noospherology 31, no. 2 (October 25, 2020): 93–98. http://dx.doi.org/10.15421/032015.

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Irrigation of lands in arid climates helps to solve the problem of water deficit of soils in order to increase their fertility. However, under the influence of mineralized waters used for irrigation, there is a degradation of chemical, physico-chemical, water-physical and physical properties of soils. Soil monitoring is one of the effective mechanisms that allowsassessing the current state of soils and predicting the negative consequences of economic activity in the future. The area where the research was conducted is in the zone of insufficient moisture where there is an annual deficit of wat
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42

Sadykhova, M. "Physical and Chemical Indicators of Meadow Brown Soils." Bulletin of Science and Practice 7, no. 7 (July 15, 2021): 39–42. http://dx.doi.org/10.33619/2414-2948/68/05.

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The research has established that the carbonate content of meadow brown soils in the upper and lower horizons varies between 1–9–11%. Where in, the calcium content reaches 85–90%. The content of physical day and silt fraction is 42–75% and 24–36% respectively and is concentrated mainly in the middle part of the profile.
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Jiménez-Ballesta, Raimundo, Sandra Bravo, José Angel Amorós, Caridad Pérez-de los Reyes, Jesús García-Pradas, and Francisco J. García-Navarro. "Understanding the Quality of Local Vineyard Soils in Distinct Viticultural Areas: A Case Study in Alcubillas (La Mancha, Central Spain)." Agriculture 10, no. 3 (March 6, 2020): 66. http://dx.doi.org/10.3390/agriculture10030066.

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The essential features of the soils of a pilot zone in La Mancha (Central Spain), namely the Alcubillas municipability, have been characterized. The soil properties that may contribute to a better understanding of the impact of soil on grape production have also, been evaluated. For this, several soil profiles have been described and analyzed and the profiles have been mapped. The soils are mainly Entisols, Inceptisols and Alfisols, with their evolution controlled by the action of a xerophytic Mediterranean climate. Most of these soils have a loamy clay texture, with medium clay contents and s
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Jia, Yanlong, Tangfu Xiao, Jialong Sun, Zengping Ning, Enzong Xiao, Xiaolong Lan, and Yuxiao Chen. "Calcium Enhances Thallium Uptake in Green Cabbage (Brassica oleracea var. capitata L.)." International Journal of Environmental Research and Public Health 20, no. 1 (December 20, 2022): 4. http://dx.doi.org/10.3390/ijerph20010004.

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Thallium (Tl) is a nonessential and toxic trace metal that is detrimental to plants, but it can be highly up-taken in green cabbage (Brassica oleracea L. var. capitata L.). It has been proven that there is a significant positive correlation between Tl and Calcium (Ca) contents in plants. However, whether Ca presents a similar role for alleviating Tl toxicity in plants remains unclear, and little is known in terms of evidence for both Ca-enhanced uptake of Tl from soils to green cabbage and associated geochemical processes. In this study, we investigated the influence of Ca in soils on Tl uptak
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45

Kowalska, Joanna, Bartłomiej Kajdas, and Tomasz Zaleski. "Variability of morphological, physical and chemical properties of soils derived from carbonate-rich parent material in the Pieniny Mountains (south Poland)." Soil Science Annual 68, no. 1 (March 28, 2017): 27–38. http://dx.doi.org/10.1515/ssa-2017-0004.

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Abstract Carbonate-rich soils are characterized by great diversity in content of carbonate and non-carbonate mineral substances in soil substrate which largely influences soil properties. The study presents the analysis results of four soil profiles located at the area of Pieniny National Park. The aim of this study was to characterize and classify the soils developed from the mixture of carbonate and carbonate-rich rock material, formerly classified as pararendzinas. It was achieved by determination of morphological, physical, and chemical properties, as well as mineralogical composition of s
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46

Brennan, R. F., M. D. A. Bolland, and R. W. Bell. "Increased risk of zinc deficiency in wheat on soils limed to correct soil acidity." Soil Research 43, no. 5 (2005): 647. http://dx.doi.org/10.1071/sr04162.

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Addition of lime to ameliorate soil acidity has been observed to induce zinc (Zn) deficiency for wheat in sandy soils of south-western Australia, reducing grain yields. The implications of widespread use of lime to treat acid soils for the residual value of Zn in these soils are not known. In a glasshouse experiment, using a Zn-deficient sand from south-western Australia, 3 levels of finely powdered calcium carbonate were added and incubated in moist soil for 6 weeks at 22°C to produce three different pH values (1 : 5 soil : 0.01 m CaCl2): 4.9 (original soil not treated with calcium carbonate)
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47

Krzyżaniak, M., and J. Lemanowicz. "Enzymatic activity of the Kuyavia Mollic Gleysols (Poland) against their chemical properties  ." Plant, Soil and Environment 59, No. 8 (July 31, 2013): 359–65. http://dx.doi.org/10.17221/211/2013-pse.

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The research results have shown that the enzyme pH index (0.49–0.83) confirmed the neutral or alkaline nature of the soils. Neither the changes in the content of available phosphorus nor in the activity of dehydrogenases, catalase, alkaline and acid phosphatase in soil were due to the factors triggering soil salinity; they were a result of the naturally high content of carbon of organic compounds, which was statistically verified with the analysis of correlation between the parameters. There were recorded highly significant values of the coefficients of correlation between the conten
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48

Bernini, Thiago Andrade, Marcos Gervasio Pereira, Lúcia Helena Cunha dos Anjos, Daniel Vidal Perez, Ademir Fontana, Sebastião Barreiros Calderano, and Paulo Guilherme Salvador Wadt. "Quantification of aluminium in soil of the Solimões Formation, Acre State, Brazil." Revista Brasileira de Ciência do Solo 37, no. 6 (December 2013): 1587–98. http://dx.doi.org/10.1590/s0100-06832013000600015.

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The variety of soils in the State of Acre is wide and their chemical profiles are still not fully understood. The nature of the material of origin of these soils is indicated by the high aluminium (Al) content, commonly associated with high calcium (Ca) and magnesium (Mg) contents. The study objective was to use different methods to quantify Al in soils from toposequences formed from material of a sedimentary nature originating from the Solimões Formation, in Acre, Brazil. Trenches were opened at three distinct points in the landscape: shoulder, backslope and footslope positions. Soil samples
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Wu, Dazhi, Zilong Zhang, Keyu Chen, and Linling Xia. "Experimental Investigation and Mechanism of Fly Ash/Slag-Based Geopolymer-Stabilized Soft Soil." Applied Sciences 12, no. 15 (July 25, 2022): 7438. http://dx.doi.org/10.3390/app12157438.

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In response to the high carbon emissions and energy consumption of traditional cement curing agents, in this paper, we propose a fly ash/slag-based geopolymer as an alternative to cement for stabilizing soft soils. In this study, the effects of the activator modulus, activator, and slag content on the geopolymer-stabilized clay were investigated by unconfined compressive strength (UCS) tests on Hangzhou soft soils, and the water stability and resistance to wet–dry cycles of the geopolymer-stabilized soils were studied. The changes in the microstructure and mineral phases were investigated usin
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Zhu, Wanyi, Mengnan Yuan, Fanmin He, Yang Zhao, Zhiyang Xiao, Qian Wang, Fanyou Meng, and Qiang Tang. "Effects of Hydroxypropyl Methylcellulose (HPMC) on the Reinforcement of Sand by Microbial-Induced Calcium Carbonate Precipitation (MICP)." Applied Sciences 12, no. 11 (May 25, 2022): 5360. http://dx.doi.org/10.3390/app12115360.

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Microbial-induced calcium carbonate precipitation (MICP) is a new technology used for reinforcing soils through microbial mineralization. However, the existing MICP treatment technology is more suiTable for deeper soils due to its high permeability. In this study, HPMC, a cohesive material combined with Sporosarcina pasteurii-induced calcium carbonate precipitation was used to improve the surface layer of the soil. It was also tested in different contents of bacterial solutions and cementation solutions and with a different number of MICP treatments, and was analyzed and discussed by measuring
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