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Journal articles on the topic 'Acid soil reaction'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Fahmi, Arifin, Ani Susilawati, and Ahmad Rachman. "Influence of Height Waterlogging on Soil Physical Properties of Potential and Actual Acid Sulphate Soils." JOURNAL OF TROPICAL SOILS 19, no. 2 (2015): 67. http://dx.doi.org/10.5400/jts.2014.v19i2.67-73.

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Water management is main factor that determines the successful of rice cultivation in acid sulphate soil. Soil waterlogging determines the direction and rate of chemical, geochemical and biological reaction in the soil, indirectly these reactions may influence to the changes of soil psycal properties during soil waterlogging process. The experiment was aimed to study the changes of two type of acid sulphate soils physical properties during rice straw decomposition processes. The research was conducted in the greenhouse consisting of the three treatment factors using the completely randomized d

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2

Teixeira, Fernando. "Determining the relative importance of climate and soil properties affecting the scores of visual soil quality indicators with dominance analysis." AIMS Geosciences 10, no. 1 (2024): 107–25. http://dx.doi.org/10.3934/geosci.2024007.

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<abstract> <p>In this study, we have analyzed the relationships of four manageable soil properties, soil texture, and climate variables on the scores of visual indicators of 132 soils across Europe and China. Correlations differed in acid-to-neutral and alkaline soils, both in strength and direction, which gave rise to the different rankings of the importances of the explanatory variables for each visual indicator. In alkaline soils, higher soil pH values significantly affected the score of the visual indicators and dominated other variables for most visual indicators; in acid soil

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Camargo, Mônica Sartori de, Hamilton Seron Pereira, Gaspar Henrique Korndörfer, Angélica Araújo Queiroz, and Caroline Borges dos Reis. "Soil reaction and absorption of silicon by rice." Scientia Agricola 64, no. 2 (2007): 176–80. http://dx.doi.org/10.1590/s0103-90162007000200011.

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The solubility and availability of silicon can be influenced by soil reaction. A pot experiment with a clayey textured Rhodic Acrustox was conducted under greenhouse conditions to evaluate the effect of soil reaction on silicon availability to rice plants. The experiment was set up in a completely randomized design, using a factorial scheme (4 x 4) with four materials (calcitic lime, calcium and magnesium silicate, pure silicic acid, and wollastonite), four rates (0, 2500, 5000 and 7500 mg per 5 kg-pot) and four replicates. After 60 days, dry matter yield and silicon absorption by the rice sho

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Gruenberg, Madeline G., Jonathan J. Halvorson, Ann E. Hagerman, Ikponmwosa G. Enoma, and Michael A. Schmidt. "Oxidation of Small Phenolic Compounds by Mn(IV)." Molecules 29, no. 18 (2024): 4320. http://dx.doi.org/10.3390/molecules29184320.

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Plant secondary metabolites, including phenolics, represent a large quantity of organic material that enters soil and contributes to the formation of soil organic matter (SOM). The process of phenolics forming SOM remains poorly understood. One possible mechanism is oxidation of the phenolic compound catalyzed by redox active metals such as manganese (Mn) and iron (Fe) in soils. In this work, we report how three phenolic compounds react with a redox active environmentally relevant metal, Mn(IV). The reactions were monitored via nuclear magnetic resonance (NMR), high-performance liquid chromato

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5

Hartikainen, Helinä. "Soil response to acid input in a titration experiment." Agricultural and Food Science 1, no. 6 (1992): 577–85. http://dx.doi.org/10.23986/afsci.72470.

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Cultivated surface soil samples of an acid Gleysol (soil 1, pH 4.9) and a slightly acid Podzol (soil 2, pH 6.7) were equilibrated for 48 h with oto 144 meq H+ kg-1 by a batch technique designed to simulate reactions of acid load with soil constituents. The pH of the titration suspensions ranged in soil 1 from 5.6 to 3.3, in soil 2 from 7.2 to 4.7. The exchange reaction with base cations on variable charge sites was an important mechanism for H+ inactivation. The quantities of cation equivalents released were, however, lower than the proton equivalents added. Calcium dominated the supernatant s

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Li, Chunge, Ye Deng, Jingguo Wang, Weibin Ruan, Shang Wang, and Weidong Kong. "Effects of p-Hydroxyphenylacetic Acid and p-Hydroxybenzoic Acid on Soil Bacterial and Fungal Communities." Sustainability 15, no. 12 (2023): 9285. http://dx.doi.org/10.3390/su15129285.

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Soil phenolic acids mainly come from crop residue and root exudates, which are often reported as allelochemicals affecting crop growth and soil microbial community. Here, two phenolic acid compounds, p-hydroxyphenylacetic acid (HPA) and p-hydroxybenzoic acid (HBA) were amended to the soils and were incubated under room conditions, and the soil samples were collected from soybean and corn fields separately. The soil microbial community was determined by PCR-DGGE (polymerase chain reaction-denatured gradient gel electrophoresis) and clone methods. Microbial biomass carbon (MBC) was measured base

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Willett, IR, BN Noller, and TA Beech. "Mobility of radium and heavy metals from uranium mine tailings in acid sulfate soils." Soil Research 32, no. 2 (1994): 335. http://dx.doi.org/10.1071/sr9940335.

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This study was aimed at determining whether heavy metals in tailings from Ranger Uranium Mine (N.T.) change in chemical form in such a way that they will become more mobile, or bioavailable, after they are mixed with extremely acidic soils from downstream of the mine. Four soils were studied: two samples were acid sulfate (jarositic or pyritic) materials and two were acidic materials overlying acid sulfate horizons. Copper, iron, manganese, lead, uranium and zinc fractions were determined in soils to which uranium mill tailings had been added. Total and exchangeable 226Ra were also determined

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Chodorowski, Jacek, Piotr Bartmiński, Andrzej Plak, and Ryszard Dębicki. "Soil Cover of the City of Lublin (Eastern Poland)." Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia 79 (October 4, 2024): 69–85. http://dx.doi.org/10.17951/b.2024.79.0.69-85.

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Lublin is a voivodeship city located in the Lublin Upland (Eastern Poland). The study aimed to present the spatial differentiation of soils of the city of Lublin and some of their properties. The knowledge of soil cover is very important for spatial planning and for protection and proper use of soil resources of each city. The environmental-genetic map of Lublin’s soils included in this work was made on the basis of soil-agricultural map in the scale 1:25 000 of Lublin and the soil-habitat map of the Świdnik Forest District. The soil units distinguished on the map were classified according to

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9

Pakhorukov, Ivan, and Olga Eremchenko. "Dynamics of acid-base and redox conditions in alluvial technogenically saline soils of the taiga forest zone." АгроЭкоИнфо 4, no. 58 (2023): 14. http://dx.doi.org/10.51419/202134414.

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The alluvial technogenically saline soils on the territory of the Verkhnekamsk salt deposit in the Perm Region were examined. It was found that in the studied part of the valleys of small rivers, alluvial saline soils occupy tens of hectares. During the summer-autumn observation period in alluvial humus gley saline saturated soil (Gleyic Fluvisol (Loamic, Salic)) at a depth of 10-40 cm, reducing conditions prevailed (Eh from +200 mV to -250 mV), favoring the biochemical recovery of iron and sulfur. The reaction of the soil medium ranged from 6,5–7,8 pH. In alluvial gley salt marsh unsaturated

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10

Arolu, Ibrahim Wasiu, Fatai Ayanda Arolu, Kazeem Kolapo Olalekan, and Oladosu Yusuff. "Reaction and Leaching Potentials of Magnesium Rich Synthetic Gypsum in Acidic Ultisol and Oxisol." Sahel Journal of Life Sciences FUDMA 3, no. 1 (2025): 499–512. https://doi.org/10.33003/sajols-2025-0301-61.

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Ultisols and Oxisols, the common soil in Malaysia, have low levels of cations such as K, Ca, and Mg, required for crop productivity. Thus, the management of input plays an important role in crop production in these soils. An incubation study was conducted to assess the effect of MRSG on the chemical properties of Ultisol and Oxisol in Malaysia. The incubation experiment is a factorial experiment consisting of 2 soil types, 3 treatments, and five rates, including control (0, 1, 2, 4 and 8) and laid out as a completely randomized design (CRD). The amount of nutrients released from treatments int

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Sullivan, L. A., R. T. Bush, and D. M. McConchie. "A modified chromium-reducible sulfur method for reduced inorganic sulfur: optimum reaction time for acid sulfate soil." Soil Research 38, no. 3 (2000): 729. http://dx.doi.org/10.1071/sr99088.

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Reaction times for 16 acid sulfate soil materials analysed using a modified chromium-reducible sulfur method varied between 10 and 15 min, regardless of whether the samples had been dried and ground prior to analysis or were analysed without pretreatment. The reaction time for a ground (<63 mm) pyritic rock sample was 20 min. An optimum reaction time of 20 min is recommended for analysing acid sulfate soil using the modified method; this reaction time is much less than the 1 h reaction time used in previous methods.

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12

Johan, Prisca Divra, Osumanu Haruna Ahmed, Nur Aainaa Hasbullah, et al. "Phosphorus Sorption following the Application of Charcoal and Sago (Metroxylon sagu) Bark Ash to Acid Soils." Agronomy 12, no. 12 (2022): 3020. http://dx.doi.org/10.3390/agronomy12123020.

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Acidic cations such as Al, Fe, and Mn tend to fix P in soils, and this reaction make P unavailable for plant uptake. Several conventional strategies for farmers had been proposed to ameliorate Al toxicity either via liming or continuous P fertilization. However, these approaches are not only expensive but are also environmental unfriendly. Thus, a sorption study was carried out using charcoal and sago bark ash as soil amendments to determine their effects on P sorption characteristics of low pH soils. Phosphorus sorption determination was based on standard procedures and the P adsorption data

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13

Khashi u Rahman, Muhammad, Shengcheng Tan, Changli Ma, Fengzhi Wu, and Xingang Zhou. "Exogenously applied ferulic acid and p-coumaric acid differentially affect cucumber rhizosphere Trichoderma spp. community structure and abundance." Plant, Soil and Environment 66, No. 9 (2020): 461–67. http://dx.doi.org/10.17221/681/2019-pse.

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Continuous monocropping can cause the buildup of autotoxins (e.g., phenolic compounds) in the soil, which can alter soil microbial community and inhibit plant growth. However, how different phenolic compounds affect certain soil microbiota is unclear. Here, we studied the response of cucumber rhizosphere Trichoderma spp. community to exogenously applied ferulic and p-coumaric acids by polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) and real-time PCR techniques. Results showed that ferulic acid, but not p-coumaric acid, increased the Trichoderma spp. abundance, and

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14

Kaczmarska, Kornelia, Jan Gąsior, Bernadeta Alvarez, and Małgorzata Nowak. "Kształtowanie się chemicznych właściwości gleby brunatnej pod wpływem symulowanego kwaśnego opadu w doświadczeniu lizymetrycznym." Polish Journal for Sustainable Development 24, no. 2 (2020): 9–18. http://dx.doi.org/10.15584/pjsd.2020.24.2.1.

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In natural ecosystems, the soil reaction is stable and related to the habitat conditions. In arable soils used for agricultural purposes, there is a constant need to correct the reaction to the level corresponding to the requirements of plants. In lysimeter studies, the rate of acidification and its extent were determined in the profile of agricultural brown soil under the influence of simulated acid rainfall. It was estimated that acidification of the simulated acid rainfall, equivalent to the sum of exchange bases of the brown soil Ap level, increased the concentration of magnesium 15-fold a

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15

Maršálek, Blahoslav, Helena Zahradníčková, and Marie Hronková. "Extracellular Production of Abscisic Acid by Soil Algae under Salt, Acid or Drought Stress." Zeitschrift für Naturforschung C 47, no. 9-10 (1992): 701–4. http://dx.doi.org/10.1515/znc-1992-9-1011.

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The common soil green algae Chlorella vulgaris and Stichococcus hacillaris increase extracellular abscisic acid (ABA) production under salt, acid or drought stress 5 - 10 times. Production of ABA also increases from young to senescent cultures 2 - 3 times. The relationship between age of cultures and reaction to stress factors was found. Extracellular ABA levels are 1 - 2 times higher than cellular ones. Possible influence of ABA to soil microbial associations, growth of plants and soil fauna is discussed from an ecological point of view.

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16

Gasparyan, Gayane, Arevik Eloyan, Tatevik Jhangiryan, Albert Markosyan, Inga Beglaryan, and Marina Barseghyan. "Wheat production management in saline soils through the use of vinasse." Functional Food Science - Online ISSN: 2767-3146 5, no. 1 (2025): 20–29. https://doi.org/10.31989/ffs.v5i1.1539.

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Background: In the context of global climate change, rising temperatures, water scarcity, and anthropogenic factors have accelerated land degradation processes. Salinization, a key driver of degradation, poses a significant threat to food security by drastically reducing crop productivity. Wheat, a staple crop crucial for food security, is highly susceptible to osmotic stress and ionic toxicity caused by salinization. Consequently, the desalination and dealkalinization of saline soils are crucial to support agricultural intensification. Objective: This study investigates the effectiveness of v

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17

Vilkova, V. V., K. Sh Kazeev, M. S. Nizhelskiy, et al. "Influence of Fires on the Enzymatic Activity of Brown Soils and Burozems of the Western Caucasus." Почвоведение, no. 2 (August 18, 2024): 275–85. http://dx.doi.org/10.31857/s0032180x24020064.

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The results of studying the effect of fires on the biological properties of brown soils of xerophytic forests (Skeletic Leptic Cambisol) of the Utrish State Nature Reserve, Krasnodar Territory (crown fire of 2020), and burozem of mesophytic forests (Haplic Cambisol (Loamic)) of the Khamyshinsky forestry, Republic of Adygea (ground fire of 2018) are presented. Changes in the reaction of the soil environment, the content of organic carbon, and the activity of such enzymes as catalase, urease, phosphatase, and invertase involved in the cycle of carbon, phosphorus, and nitrogen have been studied.

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Li, Jian, Andrew W. Rate, and Robert J. Gilkes. "Silver ion desorption kinetics from iron oxides and soil organic matter: effect of adsorption period." Soil Research 42, no. 1 (2004): 59. http://dx.doi.org/10.1071/sr03056.

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In order to have a better understanding of the mobility and bioavailability of silver in the environment, it is important to investigate the desorption behaviour of silver from some environmentally relevant soil components. Four single soil constituents (charcoal, humic acid, ferrihydrite, goethite) were chosen to investigate the rate of desorption of silver ions. The effect of reaction period between silver and the soil constituents on subsequent desorption was also investigated. A significant proportion of Ag+ sorbed by Fe oxides, humic acid, and charcoal cannot readily be desorbed back into

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19

BORKOTOKI, BIKRAM. "Soil nutrient mapping of the Lakhimpur district of Assam using geospatial technology." Annals of Plant and Soil Research 26, no. 1 (2024): 1–13. http://dx.doi.org/10.47815/apsr.2024.10326.

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Soil Nutrient Mapping of Lakhimpur District of Assam comprises the status of soil reaction (pH), organic carbon (OC), available primary nutrients (N, P and K) , one secondary nutrient (S) and two important micronutrients (Zn and B) of surface soils (0-15cm) collected from geo-reference points at 2.5 km grids and neighbouring points within 1 km radius of the grid. The analytical database was fed to GIS platform (ArcGIS) to obtain the nutrient status map. The results reveal that strongly acid (5.1-5.5) and medium acid (5.6-6.0) soils were predominant in the district followed by very strongly aci

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Ling, Felix N. L., Khairul Anuar Kassim, and Ahmad Tarmizi Abdul Karim. "Reaction Products of Lime Zeolite Stabilized Kaolin Humic Acid." Applied Mechanics and Materials 372 (August 2013): 88–96. http://dx.doi.org/10.4028/www.scientific.net/amm.372.88.

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Lime, a traditional calcium based stabilizer, had been widely used in chemical stabilization to improve the strength of soil. Past researches had shown that the major reaction product of lime and soil such as Calcium Silicate Hydrate (CSH) was formed abundantly under the observation of microscopic studies. However, sometimes it will be quite difficult to confirm the existence of CSH phase if solely based on its needle like structures, especially when other rod like structures will also exist. Practically, the recognition of the CSH phase by using XRD spectrum through matching with published da

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Johan, Prisca Divra, Osumanu Haruna Ahmed, Latifah Omar, and Nur Aainaa Hasbullah. "Phosphorus Transformation in Soils Following Co-Application of Charcoal and Wood Ash." Agronomy 11, no. 10 (2021): 2010. http://dx.doi.org/10.3390/agronomy11102010.

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Phosphorus (P) is a vital soil macronutrient required by plants for optimum growth and development. However, its availability is limited because of fixation. The phosphorus fixation reaction is pH dependent. In acid soils, the predominance of aluminium (Al) and iron (Fe) oxides in both crystalline and amorphous forms reduces the solubility of soil inorganic P through fixation on positively charged surfaces and formation of insoluble Al and Fe precipitates. In alkaline soils, P readily reacts with calcium (Ca) to form sparingly soluble calcium phosphates. As a result, a large proportion of appl

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Fletcher, Lauren E., Catharine A. Conley, Julio E. Valdivia-Silva, et al. "Determination of low bacterial concentrations in hyperarid Atacama soils: comparison of biochemical and microscopy methods with real-time quantitative PCR." Canadian Journal of Microbiology 57, no. 11 (2011): 953–63. http://dx.doi.org/10.1139/w11-091.

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Hyperarid Atacama soils are reported to contain significantly reduced numbers of microbes per gram of soil relative to soils from other environments. Molecular methods have been used to evaluate microbial populations in hyperarid Atacama soils; however, conflicting results across the various studies, possibly caused by this low number of microorganisms and consequent biomass, suggest that knowledge of expected DNA concentrations in these soils becomes important to interpreting data from any method regarding microbial concentrations and diversity. In this paper we compare the number of bacteria

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Enescu, Raluca Elena, Lucian Dincă, Mihai Zup, Șerban Davidescu, and Diana Vasile. "Assessment of Soil Physical and Chemical Properties among Urban and Peri-Urban Forests: A Case Study from Metropolitan Area of Brasov." Forests 13, no. 7 (2022): 1070. http://dx.doi.org/10.3390/f13071070.

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Cities are affected by the impact of rapid urbanization on changes to soil properties. The aim of this study was to assess the physical and chemical properties of the soil of urban and peri-urban forests and to define which soil property is more significant for these two types of forests. The research took place in urban and peri-urban forests in the metropolitan area of Brasov, Romania. Among the properties determined were: particle size distribution, reaction, soil organic matter content, and the base saturation degree. As supplementary data, for plots from urban forests, the heavy metal con

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Angelova, Lyudmila, Nezabravka Genova, Gergina Pencheva, Yasena Statkova, Violeta Yotova, and Andriana Surleva. "Contribution to the Molybdenum Blue Reaction and its Application in Soil Analysi." Methods and Objects of Chemical Analysis 17, no. 2 (2022): 59–69. http://dx.doi.org/10.17721/moca.2022.59-69.

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This paper presents a study on the molybdenum blue reaction (MB) as a finishing detection step in soil analysis for quantification of plant available phosphorus. An ammonium acetate/calcium lactate reagent (pH = 4.2) was used for soil phosphorus extraction. The molybdenum blue color reaction using premixed Murphy-Riley reagent and ascorbic acid as a reductant was reinvestigated. UV-Vis characteristics of MB, optimal wavelength, reaction time and concentration of reductant were studied. The effect of ascorbic acid concentration and the reaction time on linearity, bias and uncertainty was discus

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Fuentes, Edwar, Hugo Pinochet, Martine Potin-Gautier, and Ida De Gregori. "Fractionation and Redox Speciation of Antimony in Agricultural Soils by Hydride Generation–Atomic Fluorescence Spectrometry and Stability of Sb(III) and Sb(V) During Extraction with Different Extractant Solutions." Journal of AOAC INTERNATIONAL 87, no. 1 (2004): 60–67. http://dx.doi.org/10.1093/jaoac/87.1.60.

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Abstract This stability of Sb(III) and Sb(V) species was studied during single extraction from soils by water. EDTA, diluted H2SO4 and H3PO4, and oxalic acid/oxalate solutions, with and without ascorbic acid, were used as stabilizing reagent of both Sb species. Antimony redox speciation in soil extracts was performed by selective hydride generation–atomic fluorescence spectrometry. Simulated extraction procedures (without soil) showed that, except in oxalate medium, Sb(III) was oxidized to Sb(V), and this reaction was avoided with ascorbic acid. Recovery studies from a spiked agricultural soil

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Hikmat, M., B. Susanto, and E. Yatno. "Characteristics and potential of tidal swampland to support the lowland rice development: a case study in Maliku Sub-District, Pulang Pisau Regency, Central Kalimantan Province." IOP Conference Series: Earth and Environmental Science 1266, no. 1 (2023): 012097. http://dx.doi.org/10.1088/1755-1315/1266/1/012097.

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Abstract Tidal swampland is an agroecosystem with distinct characteristics. Studying on this land was very important to support national food security. This study aims to identify the soil characteristics and the potential of tidal rice fields in the Maliku Sub-District, Pulang Pisau Regency, Central Kalimantan Province, Indonesia. Four representative soil profiles were characterized in the field and laboratory to determine the soil’s chemical, physical, and mineralogical properties. The results showed that these soils were generally fine textured, had very acid to acid reaction (soil pH 3.2-4

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Elkhatib, E. A., A. M. Mahdy, and N. H. Barakat. "Thermodynamics of copper desorption from soils as affected by citrate and succinate." Soil and Water Research 2, No. 4 (2008): 135–40. http://dx.doi.org/10.17221/2110-swr.

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Desorption of Cu and low molecular weight dissolved organics are the primary factors that impact fate and transport of Cu in soils. To improve predictions of the toxicity and threat from Cu contaminated soil, it is critical that time-dependent desorption behaviour be understood. In this paper, the effect of organic ligands citrate and succinate on the kinetics of Cu desorption from contaminated soils varying widely in soil characteristics was investigated at three different temperatures. The results showed that the first order equation adequately described the kinetics of Cu desorption from cl

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Wu, Tong, Saif Ullah, Lianxiang Zhong, Yuanyuan Xu, Guoyu Wei, and Mei Yang. "Impact of Simulated Acid Rain on Soil Base Cations Dissolution between Eucalyptus Pure Plantations and Eucalyptus–Castanopsis fissa Mixed Plantations." Forests 14, no. 11 (2023): 2159. http://dx.doi.org/10.3390/f14112159.

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The soils of Eucalyptus pure plantations and Eucalyptus–Castanopsis fissa mixed plantations were studied using soil column leaching experiments with acid solutions to mimic the effects of acid rain on the soils. This helped researchers learn more about how soil base ions react to acid deposition and their ability to protect the soil from excessive acidity under pure and mixed-species plantations. The results showed that acid rain leaching increased the leaching loss, desorption, and desorption rate of soil base ions while decreasing the soil pH value, adsorption, and adsorption rate of soil ba

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Zheng, Yonghong, Zhiguo Zhang, Yongchun Chen, et al. "Influence of Dissolved Organic Carbon on the Adsorption and Desorption of Cadmium in Reclaimed Soil." Nature Environment and Pollution Technology 21, no. 1 (2022): 405–12. http://dx.doi.org/10.46488/nept.2022.v21i01.048.

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Organic acids are widespread in the environment and play an important role in the adsorption, desorption, and migration of soil cadmium (Cd). Under the effect of humic acid (HA) and citric acid, the properties and mechanism of Cd adsorption and desorption in reclaimed soil from the Panyi Mine in the Huainan mining area were investigated (CA). The addition of HA and CA inhibited the adsorption and enhanced the desorption of Cd in reclaimed soil, with HA having a stronger effect than CA. As the concentration of added HA or CA increased, the adsorption capacity of Cd in the reclaimed soil gradual

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Dalhem, Krister, Stefan Mattbäck, Anton Boman, and Peter Österholm. "A simplified distillation-based sulfur speciation method for sulfidic soil materials." Bulletin of the Geological Society of Finland 93, no. 1 (2021): 19–30. http://dx.doi.org/10.17741/bgsf/93.1.002.

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Speciation of inorganic sulfur species, mainly pyrite and metastable iron sulfides by operationally defined methods, is widely used for risk assessment of acid sulfate soils by quantifying the acidity producing elements, as well as for general characterisation of marine sediments and subaqueous soils. “Traditional” sulfur speciation methods commonly use highly specialised glassware which can be cumbersome for the operator, or, require long reaction times which limit the usability of the method. We present a simplified method which has a sufficiently low limit of detection (0.002%) and quantita

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Khiari, Lotfi, and Léon E. Parent. "Phosphorus transformations in acid light-textured soils treated with dry swine manure." Canadian Journal of Soil Science 85, no. 1 (2005): 75–87. http://dx.doi.org/10.4141/s03-049.

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Organic matter can sorb P in acid soils through metal-organic matter-phosphate complexes. The pyrophosphate extractable Al and Fe and soil C contents were hypothetized to influence P partitioning in Ferro-Humic Podzols. Reaction of added P may be mitigated by adding lime or organic matter as dry swine manure (DSM) together with mineral P fertilizers. Three soils had 40 to 50 g kg-1 of soil organic matter (SOM) content, and 76 to 140 mmol (Al + Fe)pyro kg-1. A peaty soil phase had 200 g SOM kg-1, and 58 mmol (Al + Fe)pyro kg-1. Rates of monoammonium phosphate were 0, 27, 69, and 144 kg P ha-1 i

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Toda, Kanako, Ryosuke Kikuchi, Tsubasa Otake, et al. "Effect of Soil Organic Matters in Dredged Soils to Utilization of their Mixtures Made with a Steel Slag." Materials 13, no. 23 (2020): 5450. http://dx.doi.org/10.3390/ma13235450.

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Dredged soils have been used as construction materials by alkaline activation with steel slag (steel slag-dredged soil mixtures) at harbors. Such mixtures develop strength chiefly by calcium silicate hydrate (C-S-H) formation by the pozzolanic reaction. However, the strength of such mixtures is unpredictable, and in some cases, mixtures have been too soft for the intended engineering application. An identification of strength development indicators would accelerate evaluation processes for strength development to facilitate and promote the utilization of such materials. This paper focuses on t

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BOLE, J. B. "UPTAKE OF 15N-LABELLED UREA AND 32P-LABELLED PHOSPHATE FROM ACID-BASED UREA PHOSPHATE AND GRANULAR FERTILIZERS." Canadian Journal of Soil Science 66, no. 1 (1986): 189–93. http://dx.doi.org/10.4141/cjss86-020.

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The availability of nitrogen and phosphorus in fertilizer products labelled with both 32P and 15N was measured in a growth chamber experiment. The uptake of N and P by soft white spring wheat (Triticum aestivum L.) from a solution of acid urea phosphate fertilizer did not differ significantly from that of a mixture of granular urea and monammonium phosphate fertilizer. The fertilizer-P uptake efficiency of both sources was higher in a neutral soil than in acid or calcareous soils. Banding either fertilizer increased the uptake of fertilizer P compared with sources mixed with the soil, but did

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Mahmud, Abu, Anjuman Ara Khatun, M. Abdul Matin, Monishita Nuzhat Chowdhury, and M. Asadul Hoque. "pH-Sensitive Biodegradability of Poly(Maleic acid-co-Malic acid-coButane-1,4-diol-co-Adipic acid) for Smart Release of Fertilizers." Journal of Composites and Biodegradable Polymers 12 (November 20, 2024): 34–40. http://dx.doi.org/10.12974/2311-8717.2024.12.04.

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Poly(Maleic acid-co-Malic acid-co-Butane-1,4-diol-co-Adipic acid) was synthesized in xylene medium using Dean-Stark apparatus. Corresponding monomers were taken in stoichiometric ratios. A trace amount of anhydrous ferric chloride was added as catalyst. The reaction temperature and time were 135-140°C and 5 hours respectively. The synthesized co-polyester was characterized by its solubility test in common organic solvents, molecular weight, FTIR-spectrum, TGA, hydrolytic test and soil burial biodegradability tests. The end group analysis and viscosity methods were used for molecular weight det

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Kořenková, Lucia, and Martin Urík. "Basic soil properties as a factor controlling the occurrence and intensity of water repellency in rankers of the White Carpathians." Folia Forestalia Polonica, Series A - Forestry 57 (3) (December 10, 2015): 129–37. https://doi.org/10.1515/ffp-2015-0013.

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Water repellency in soils is controlled by many different factors, basic physical and chemical properties might be considered the crucial ones. For the purpose of this study, 12 sites were selected and sampled (0–20 cm depth) in the White Carpathians. Repellency tests were conducted under laboratory conditions in triplicate using water drop penetration time (WDPT) test and the molarity of ethanol droplet (MED) test. Results of WDPT measurements showed that three samples were marked by slight to extreme water repellency. Regarding the relationship between WDPT/MED and tested soil properti

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Lemanowicz, Joanna. "Phosphorus content and distribution and the activity of phosphatases in Arenosols in a forest affected by long-term exposure to the effects of the Anwil S.A. nitrogen works in Włocławek." Forest Research Papers 76, no. 3 (2015): 250–55. http://dx.doi.org/10.1515/frp-2015-0024.

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Abstract This paper presents the results of research examining the soil content of total and available phosphorus (PE-R), taking into consideration the activity of alkaline and acid phosphatases. For this study, three soil profiles were sampled in Arenosols at a distance of 0.8, 2.0 and 2.5 km from a nitrogen fertiliser manufacturer, Anwil S.A. A control profile was taken from the Tuchola Forest. The soils’ reaction ranged from acidic to very acidic. The humus content in the surface horizons of the sampled profiles was average (1.26–2.61%). The lowest PE-R content was found in the profile take

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Hu, Jing-rong, Peng-peng Zhou, Yuan-min Zhu, Liang Ren, and Long-jiang Yu. "Isolation of Eicosapentaenoic Acid-Producing Fungi from Soil Based on Polymerase Chain Reaction Amplification." Zeitschrift für Naturforschung C 66, no. 7-8 (2011): 429–33. http://dx.doi.org/10.1515/znc-2011-7-816.

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A method was developed for rapid screening and isolation of eicosapentaenoic acid (EPA)-producing soil fungi through polymerase chain reaction (PCR) amplification. Genes coding for Δ6 fatty acid desaturase and Δ5 fatty acid desaturase were used as molecular markers for screening these EPA-producing fungi from soil. Three out of 65 soil fungi gave positive results through PCR amplification. Two out of these three strains were found to produce EPA when they had grown in 80 ml potato/dextrose liquid medium at (25 ± 1) °C for 144 h. The EPA yields were 215.81 mg l-1 and 263.80 mg l-1, respectively

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Ochmian, Ireneusz, Karolina Kozos, Anna Jaroszewska, and Ryszard Malinowski. "Chemical and Enzymatic Changes of Different Soils during Their Acidification to Adapt Them to the Cultivation of Highbush Blueberry." Agronomy 11, no. 1 (2020): 44. http://dx.doi.org/10.3390/agronomy11010044.

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Although there has been an increase in the cultivation of highbush blueberry (Vaccinium corymbosum L.) worldwide for several years now, the availability of suitable soils for this species remains a problem. Highbush blueberry is a plant that requires acidic soils (pH 3.8–5.5), which are well aerated and have a stable level of groundwater and high humus content. In the present study, substances such as urea phosphate fertilizer, sulfur, sulfuric acid, and phosphogypsum were used to acidify three soils: peat, loamy sand, and loamy silt. The study aimed to lower the pH of the tested soils and opt

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Apse, Jana, and Aldis Karklins. "Modification of Soil Properties for Blueberry (Vaccinium Corymbosum L.) Cultivation." Proceedings of the Latvia University of Agriculture 30, no. 1 (2013): 1–10. http://dx.doi.org/10.2478/plua-2013-0009.

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Abstract Highbush blueberries are a relatively new crop in Latvia raising interest in farmers who wish to diversify their commercial horticultural activities. It is considered that soil properties are one of the possible shortcomings limiting establishment of high-productive plantations in areas where soil reaction is close to neutral. The research objective was to test the main soil characteristics in a commercial highbush blueberry plantation where initial soil properties were changed as a result of soil modification (deep tillage, peat additions) before planting of bushes and afterwards mai

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Eidukeviciene, M., J. Volungevicius, S. Marcinkonis, et al. "Interdisciplinary analysis of soil acidification hazard and its legacy effects in Lithuania." Natural Hazards and Earth System Sciences 10, no. 7 (2010): 1477–85. http://dx.doi.org/10.5194/nhess-10-1477-2010.

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Abstract. An analysis of factors influencing effective soil acidification management is reported. This analysis was conducted simultaneously at both national and local levels. These investigations were accomplished in three stages: (i) validation of acid soil spatial patterns using systems analysis and geoinformation methods; (ii) spatial statistical analysis of soil pH diversity using a statistical grid method; and (iii) development of the concept of soil acidity management. Results indicate the national spatial distribution of topsoil reaction is a natural and stable phenomenon related to Qu

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Raspopina, Svitlana, Yuriy Debryniuk, and Yuriy Hayda. "Forest plantation productivity – soil interactions within Western Forest-Steppe of Ukraine: effects of pH and cations." Folia Forestalia Polonica 62, no. 4 (2020): 233–45. http://dx.doi.org/10.2478/ffp-2020-0023.

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AbstractDark grey podzolized soils on the loess like loams, which are represented in the soil cover within fresh and humidity gradients in the Western Forest Steppe of Ukraine, are characterized by high forest vegetation potential, which ensure the formation of mostly pure and mixed larch and spruce stands with high level of the productivity. Despite the fact that both species are coniferous, their effect on the soil, in particular, on its acid-base indicators (actual and potential forms of acidity, sum of absorbed bases, degree of saturation of bases, content of mobile aluminium), which are i

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Kerven, GL, DG Edwards, CJ Asher, PS Hallman, and S. Kokot. "Aluminum determination in soil solution. 2. Short-term colorimetric procedures for the measurement of inorganic monomeric aluminum in the presence of organic acid ligands." Soil Research 27, no. 1 (1989): 91. http://dx.doi.org/10.1071/sr9890091.

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Colorimetric procedures were developed for the determination of inorganic monomeric aluminium (Al) in the presence of organic ligands including high molecular weight fulvic acids and short chain carboxylic acids. The procedures take advantage of marked differences in reaction rate between the chromogens aluminon and pyrocatechol violet (PCV) and aluminium in either free inorganic forms or organically complexed forms. The aluminon method uses a 30 s reaction and has a working range for total Al concentrations between 20 and 250 PM. The more sensitive PCV method uses a reaction time of 60 s and

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Ling, Felix Ngee Leh, Khairul Anuar Kassim, Ahmad Tarmizi Abdul Karim, and Tze Wei Chan. "Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite." Advanced Materials Research 723 (August 2013): 985–92. http://dx.doi.org/10.4028/www.scientific.net/amr.723.985.

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Organic content in soil is believed to inhibit formation of reaction products in lime stabilization which resulted in low gain of strength when dealing with organic soils. Zeolite, a kind of pozzolan with high CEC capacity is proposed to be use in this study in order to improve lime stabilization of organic soil. The effectiveness of blended lime zeolite in stabilization of organic soils was investigated by using two types of artificial organic soils with predetermined organic contents. Artificial organic soils were formed by mixing inorganic soil (commercial kaolin) with organic matter (comme

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Watson, R. J., and B. Blackwell. "Purification and characterization of a common soil component which inhibits the polymerase chain reaction." Canadian Journal of Microbiology 46, no. 7 (2000): 633–42. http://dx.doi.org/10.1139/w00-043.

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DNA prepared from soil usually contains a brown-tinted inhibitor of the polymerase chain reaction (PCR) which limits the sensitivity of this technique for specific detection of microorganisms. To localize the inhibitor, soil fractions were tested for their inhibitory effect on the PCR reaction. A highly inhibitory activity, sufficient to account for the inhibition typically exhibited by soil DNA, was found to be tightly associated with the soil microorganism fraction. After cell breakage, the inhibitory material became soluble, and was not separable from DNA by standard purification procedures

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Tsepina, N. I., T. V. Minnikova, S. I. Kolesnikov, and K. Sh Kazeev. "Evaluation of Silver Phytotoxicity on Soils of Different Stability: Brown Forest, Chernozem and Sierosands." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 3 (207) (October 2, 2020): 107–12. http://dx.doi.org/10.18522/1026-2237-2020-3-107-112.

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The effect of silver pollution on the phytotoxicity of soils of varying degrees of resistance: chernozems, sierosands and brown forest soils was investigated. A direct relationship was observed between the concentration of the element in the soil and the length of the radish roots. At a silver concentration of 10 mg/kg, the highest toxicity was established on sulphurous sand and brown forest soil. A dose of 100 mg/kg had the greatest inhibitory effect on the length of the roots of radishes grown on ordinary chernozem, sierosands, and brown forest soil at 17, 24, and 29 % of the control, respec

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Fioretto, Roberto Antunes, Cristine Elizabeth Alvarenga Carneiro, Marcos Antonio Pavan, Conrado Cagliari Fioretto, and Leonardo Theodoro Büll. "The role of sugar cane straw on soil reaction." Ciência e Agrotecnologia 33, spe (2009): 2069–74. http://dx.doi.org/10.1590/s1413-70542009000700062.

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Two laboratory experiments were carried out to evaluate the effects of sugar cane straw on soil acidity. Sugar cane straw residues were added on the surface of a Typic Harplortox in a polyvinyl chlorid (PVC) column at rates of 0, 20, 40, and 76 g kg-1, the soil was incubated to field capacity with distilled water and incubated for 0, 7, 14, 45, and 90 days. Soil samples were taken at 0-5, 5-10, 10-15, 15-20, and 20-25 cm depth. With the increase of sugar cane straw rates one verified the increase of soil pH CaCl2, and decrease of KCl exchangeable Al in the top 15cm soil layer. The contribution

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Didur, O. O., I. A. Ivanko, K. K. Holoborodko, V. V. Katsevych, Kh V. Strepetova, and Y. I. Grytsan. "Assessment of the soil buffer capacity in the green plantings of the megalopolis parks." Питання степового лісознавства та лісової рекультивації земель 52 (October 15, 2023): 32–41. http://dx.doi.org/10.15421/442303.

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Land degradation poses a serious challenge to food security, livelihood sustainability, ecosystem services and biodiversity conservation, while inefficient land management leads to widespread loss of soil biodiversity. The soil buffer capacity is actively involved in the mechanisms of implementing such an ecosystem service as the development and stabilization of soil fertility. Buffering determines the share of the soil potential that determines the processes of immobilization (deposition) and mobilization (release, loss) of a particular element of fertility – first of all, mineral nutrients r

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Jansen, Gisela, Hans-Ulrich Jürgens, Edgar Schliephake, and Frank Ordon. "Effect of the Soil pH on the Alkaloid Content ofLupinus angustifolius." International Journal of Agronomy 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/269878.

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Field studies were conducted in growing seasons 2004, 2005, and 2010 to investigate the effect of different soil pH values on the alkaloid content in seeds ofLupinus angustifolius. Two-year experiments with eleven cultivars were carried out in acid soils with an average ofpH=5.8(Mecklenburg-Western Pomerania) and on calcareous soils with an average pH of 7.1 (Bavaria), respectively. In addition, in 2010, eight cultivars were grown in field experiments in soils with pH values varying betweenpH=5.3andpH=6.7. In all experiments conducted on soils with a higher pH (pH=6.7andpH=7.1), a significantl

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Gaffarova, Lilia, and Albina Serzhanova. "Statistical parameters of the properties of agro-gray soils in the Northern part of the forest-steppe." BIO Web of Conferences 27 (2020): 00112. http://dx.doi.org/10.1051/bioconf/20202700112.

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The paper analyzes the regional statistical characteristics of analytical and morphometric properties of agro-gray soils formed in one-factor conditions of the Privyatskaya band of the Pre-Kama region of the Republic of Tatarstan. The sampling of analytical data was carried out in accordance with the systematic group and non-eroded soil analogues. The upper part of the soil profile of the studied soil has a low humus content, medium acid reaction, the profile distribution of the sum of absorbed bases is almost uniform and is in the range of 22.6 to 26.8 mmol /100 g of soil. Generalization of t

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Usman, Jacob, J. O. Ogbu, S. E. Iji, and S. Afatar. "Assessment of Some Wetland Potentials in Makurdi Supporting Rice and Sugarcane Production." Journal of Horticulture and Plant Research 9 (June 2020): 1–10. http://dx.doi.org/10.18052/www.scipress.com/jhpr.9.1.

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The study was carried out in Makurdi, Benue State with the view to characterize some wetlands of Makurdi area and their suitability to rice and sugarcane production. In order to characterize and classify the soil, four pedons were dug at the selected seasonally flooded wetlands. The soils were characterized in terms of their morphological, physical and chemical properties. The soils were generally sandy loam, loamy sands and sandy clay loam. The distribution of clay content increased with soil depth for all pedons. The soils were strongly to moderately acid in reaction (3.47 to 5.61) in H2O. T

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