Relevant bibliographies by topics / Soil pH

Academic literature on the topic 'Soil pH'

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Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Soil pH"

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Aitken, RL, and PW Moody. "Interrelations between soil pH measurements in various electrolytes and soil solution pH in acidic soils." Soil Research 29, no. 4 (1991): 483. http://dx.doi.org/10.1071/sr9910483.

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Ninety soil samples (81 surface, 9 subsurface) were collected from eastern Queensland and soil pH (1:5 soi1:solution) was measured in each of deionized water (pH,), 0.01 M CaCl2, 0-002 M CaCl2 and 1 M KCl. Soil solution was extracted from each soil after incubation for 4 days at the 10 kPa matric suction moisture content, and pH (pHss) and electrical conductivity were measured. The objectives of this work were to investigate interrelationships between soil pH measurements in various electrolytes and soil solution pH in a suite of predominantly acidic soils. Although the relationships between pHw and pH measured in the other electrolytes could be described by linear regression, the fitting of quadratic equations improved the coefficients of determination, indicating the relationships were curvilinear. The majority of soils exhibited variable charge characteristics (CEC increases with soil pH) and the curvilinear trend is explained on this basis. At low pH, the difference between pH, and pH measured in an electrolyte will be small compared with the difference at higher pH values because, in general, at low pH, soils will be closer to their respective PZSE (pH at which electrolyte strength has no effect). Of the electrolytes used, pH measured in 0.002 M CaCl2 gave the closest approximation to pHs,. However, when soils with ionic strengths greater than 0.018 M were selected (predominantly cultivated surface soils), pH in 0.01 M CaCl2 gave the best approximation to pHss. For predicting pHss, the ionic strength of the electrolyte will need to be matched to that of the soils studied. For a suite of soils with a large range in soil solution ionic strength (as in this study), it is preferable to measure pHss directly.
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Hsu, Shih-Lin, Joe Hung, and Arthur Wallace. "Soil pH Variation Within a Soil. III. pH Variation in Limed Soil." Communications in Soil Science and Plant Analysis 35, no. 3-4 (December 31, 2004): 337–44. http://dx.doi.org/10.1081/css-120029716.

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Al-Busaidi, A. S., and P. Cookson. "Salinity–pH Relationships in Calcareous Soils." Journal of Agricultural and Marine Sciences [JAMS] 8, no. 1 (January 1, 2003): 41. http://dx.doi.org/10.24200/jams.vol8iss1pp41-46.

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Soil pH is the most commonly requested analysis undertaken during farm advisory work. Determination of pH assists in understanding many reactions that occur in soil. Variations in pH between soils have been related to a number of other soil parameters. In this study thirty different soils were collected from agricultural areas to have a wide range of pH, salinity, and texture. The objective was to study the relationship between soil pH and salinity. A negative relationship was found between soil salinity and pH. The main factor contributing to this relationship was probably the presence of soluble Ca2+ ion in soil. Variations in soluble Ca2+ ion concentrations between soils were negatively related to soil pH and positively related to soil salinity. Other soil properties that may affect pH, including CEC, CaCO3, clay content, gypsum and sodium adsorption ratio (SAR), were also determined.
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Brouder, S. M., B. S. Hofmann, and D. K. Morris. "Mapping Soil pH." Soil Science Society of America Journal 69, no. 2 (March 2005): 427–42. http://dx.doi.org/10.2136/sssaj2005.0427.

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Ahern, CR, MMG Weinand, and RF Isbell. "Surface soil-pH map of Queensland." Soil Research 32, no. 2 (1994): 212. http://dx.doi.org/10.1071/sr9940213.

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Surface soil pH can influence biological activity, nutrition and various chemical processes in the soil. Low pH or acidity is causing major concern in southern Australia, prompting requests for details on the extent, severity and distribution of acidic soils in Queensland. By creating a soil pH database, using an appropriate base map, rainfall isohyets and GIS technology, a coloured pH map of surface soils was produced at a 1:5000000 scale for the entire State. As most samples were from virgin or little disturbed sites, the map generally reflects naturally occurring soil pH. Developed horticultural, agricultural and fertilized pastoral areas are likely to have lower pH than that mapped. About two thirds (63.1%) of Queensland's soils have acidic surfaces, 9.5% neutral and the remaining 26.9% are alkaline. The major proportion (74%) of the > 1200 mm rainfall zone is strongly acid, and the remainder is medium acid or acid. Much of the sugar growing areas occur in this zone. Surface soil pH generally decreases as rainfall increases and to a lesser extent from subtropical to tropical climate. In addition to climate, identification of the soil type assists with predicting pH, as the organic, coarse and medium textured soils and massive earths are more likely to be acid and have low buffering capacity. Depending on the land use, such soils may require regular liming or minimizing of net acidifying practices for long term sustainability.
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Crawford, DM, TG Baker, and J. Maheswaran. "Soil pH changes under Victorian pastures." Soil Research 32, no. 1 (1994): 105. http://dx.doi.org/10.1071/sr9940105.

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The severity and extent of surface soil acidification was assessed at 107 pasture sites across Victoria. At each site, soil samples (0.20 cm depth) were taken from the pasture area and an adjacent reference (undisturbed) area for analysis of soil pH (1:5 0.01 m CaCl2 or water). Acidification was evident in the 0.10 cm depth of sites with moderately and slightly acid (pH [water] 5.5-7) reference soils, while alkalinization was evident in the 0.20 cm depth of sites with strongly acid (pH [water] <5.5) reference soils. Causes of pH changes were not clearly evident from the relationships between site factors and changes in soil. It was evident that site factors were confounded since sites that had acidified often supported subterranean clover and had slightly to moderately acid reference soils, while sites which had alkalinized often supported white clover-based pastures under higher rainfall and had more acidic reference soils. An understanding of the causes of acidification in pasture-based agricultural ecosystems will only be gained through more fundamental studies at individual sites.
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Slattery, WJ, and VF Burnett. "Changes in soil pH due to long term soil storage." Soil Research 30, no. 2 (1992): 169. http://dx.doi.org/10.1071/sr9920169.

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Soil pH measured in 0.01 M CaCl2 was found to increase by up to 0.23 of a unit due to long term (7 years) storage of dried surface soil. In comparison, pH measured in water was found to increase by up to 0.55 of a unit after the same time of storage. Soils with the highest ionic strength were found to have the largest pH change. There appeared to be no relationship between soil type and pH change due to storage of soils. We suggest that caution be exercised when re-analysing soils that have been stored for long periods, for water and CaCl2 pH.
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Strong, D. T., P. W. G. Sale, and K. R. Helyar. "Initial soil pH affects the pH at which nitrification ceases due to self-induced acidification of microbial microsites." Soil Research 35, no. 3 (1997): 565. http://dx.doi.org/10.1071/s96055.

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The existence of microsites of low pH around active colonies of nitrifying soil bacteria has previously been suggested but has been difficult to verify. A study was undertaken to examine whether observed decreases in bulk soil pH that occur during nitrification are in accordance with the theory of acidified nitrification microsites. A red earth soil (sieved <2 mm) was retained at a pH of 5·3 or amended with KHCO3 to achieve a pH of 6·3. Ammonium [(NH4)2SO4] was added to the soils and they were incubated for 35 days. In both soils the pH dropped rapidly and severely limited further nitrification. The soil with the higher initial pH experienced limitations to nitrification at a pH which was 0·2 units higher than that of the soil with the lower initial pH. The explanation for this result is in terms of acidified nitrification microsites. It is suggested that an active nitrifying colony may lower the pH within its immediate vicinity to a critical pH at which nitrification almost ceases. This critical pH achieved at the nitrification microsite is probably unrelated to the initial pH of the soil, but the pH of the soil matrix which is distant from the immediate influence of the nitrification microsite would remain at a pH closer to that of the soil initially. This less acidified region of the soil matrix would have an overriding influence on the measured pH of the bulk soil and account for the discrepancy between the measured pH of the two soils at the end of the incubation. These data provide further evidence that acidified nitrification microsites exist in soil, and that the measured soil pH is a poor estimate of the pH experienced by the microbial biomass.
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Hiller, E., and M. Šebesta. "Effect of temperature and soil pH on the sorption of ibuprofen in agricultural soil." Soil and Water Research 12, No. 2 (April 10, 2017): 78–85. http://dx.doi.org/10.17221/6/2016-swr.

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Besides many natural factors, soil pH and temperature can have significant effects on the sorption of pharmaceuticals in soils. This is the first study, which aimed to evaluate the effect of soil pH and temperature on the sorption of ibuprofen in soil. Sorption–desorption experiments at 20°C indicated weak retention of ibuprofen in the soil. Sorption of ibuprofen in the soil was affected by both temperature and pH with the latter showing much greater effect. The extent of ibuprofen sorption increased with decreasing pH mainly due to the change of ibuprofen speciation from negatively charged ions at high pH to the neutral form at low pH. At pH 4, the distribution coefficient K<sub>d</sub> was 1.30 l/kg, whereas at pH 8, it was only 0.42 l/kg. When temperature increased, the sorption of ibuprofen decreased, showing that its sorption was exothermic.
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Heckman, J. R., G. C. Pavlis, and W. L. Anastasia. "Lime Requirement for New Jersey Blueberry-producing Soils." HortTechnology 12, no. 2 (January 2002): 220–22. http://dx.doi.org/10.21273/horttech.12.2.220.

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In New Jersey, the major soil series (Sassafras, Pocomoke, Berryland, Atsion, and Downer) used for blueberry (Vaccinium corymbosum L.) production often have soil pH levels much lower than the soil pH range of 4.0 to 5.2 that is considered satisfactory for blueberry. The lime requirements for these soils to achieve a target soil pH of 4.8 has not been established. Soils with current soil pH levels in the range of 3.3 to 3.9 were collected from eight New Jersey sites used for blueberry production. The soils were treated with various application rates of calcium carbonate (CaCO3) and incubated in a green-house to estimate the lime requirement of each soil. After 70 days of incubation with CaCO3, results show that a general lime recommendation of 100 lb of calcium carbonate equivalent (CCE)/acre (112 kg·ha-1) for each one tenth of a soil pH unit increase desired would elevate pH of each of the soils to within a range (pH 4.3 to 5.0) that brackets the target pH of 4.8 without causing serious risk of overliming.
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Dissertations / Theses on the topic "Soil pH"

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Allison, Stuart M. "Autotrophic nitrification at low pH." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU020926.

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The effect of low pH on autotrophic ammonia oxidation was to be investigated. Autotrophic ammonia oxidisers were successfully isolated from soils of low pH, from sites around Scotland, in an attempt to determine if acid tolerant or acidiphilic strains were responsible for nitrification in these soils. No acid tolerant bacteria were isolated and adaptation, of nitrifiers, to low pH was not found to have occurred during the maintenance of agricultural soil plots at low pH. Carbonate was found to be limiting at low pH, if sodium carbonate, alone, was used to adjust the pH of the medium. The pH minima for ammonia oxidation was not affected by additional carbonate. Recently isolated nitrifying bacteria, grown in liquid culture, were found to produce large amounts of exopolysaccharides at stationary phase, causing cell aggregation. Evidence suggested that this material offered protection against desiccation. Continuous flow columns were used to study surface attached N. europaea at low pH. It was demonstrated that surface attachment allowed nitrification to occur at 1.3 pH units lower than in liquid batch culture. This system also demonstrated a requirement for additional carbonate in medium of low pH. Evidence was found to indicate that ammonium is transported into the cell and that NH3 is not a limiting factor due to low pH. A nitrifying biofilm showed that attachment within a polysaccharide matrix offered significant persistence in a low pH environment and that activity occurred at a value lower than in liquid batch culture. The sensitivity of N. europaea to inhibition by PEX was found to increase in liquid batch culture. Continuous flow soil columns showed nitrapyrin to be more inhibitory at low pH. Nitrification occurred in columns at a pH value lower than in liquid batch culture. This culture system suggested that the bacteria were in a different physiological state than when grown in batch culture. Several strains of ammonia oxidisers, isolated from acid soils, were shown to possess a urease enzyme. A Nitrosospira sp exhibited limited growth on urea at pH 5.5.
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Chorom, Mostafa. "Behaviour of alkaline sodic soils and clays as influenced by pH and particle change." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phc551.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 173-196. The objective of this thesis is to investigate the factors affecting swelling and dispersion of alkaline sodic soils containing lime and the ways to manage these soils to improve their physical condition. Studies on pure clay systems are included to understand the fundamental process involved in swelling and dispersion of pure and soil clays.
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Howey, Emma Victoria. "Response of chickpea to different soil pH and texture." Thesis, Howey, Emma Victoria (2020) Response of chickpea to different soil pH and texture. Honours thesis, Murdoch University, 2020. https://researchrepository.murdoch.edu.au/id/eprint/59419/.

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Soil pH and texture are important properties that affect chickpea growth and rhizobium nodulation. The current pH (CaCl2) and texture recommendations in Western Australia are a pH of 5.5 and above in fine textured soils such as clays or loams. This project was conducted to determine the impact of soil texture and pH on the growth rate of chickpea. Three soil types (sandy loam, loamy sand and sandy clay loam) were utilised for a field trial based in South Burracoppin and a glasshouse experiment based at Murdoch University. The field trial was conducted with five cultivars per soil type. The soil types varied in surface and subsurface pH from 4.0 to 5.6. While, the glasshouse experiment was conducted with one cultivar and three soil types. The original soil was treated with CaCO3 to provide five pH (CaCl2) treatments per soil type. The field trial utilised a variety of non-destructive measurements such as emergence counts, and for canopy cover three techniques were investigated (normalised difference vegetation index, fractional green canopy cover, leaf area index). Plant biomass (root, shoot, pods) and nodulation were investigated 44 and 129 days after sowing, at harvest grain yield was measured. The measurements taken during the glasshouse experiment include emergence, branching counts and canopy cover. The final harvest measurements included shoot and root weights as well as the nodule counts and weights. The sandy clay loam soil type produced an above average crop despite being an unsuitable soil pH of 4.9, while both the sandy loam and loamy sand produced a below average crop due to a combination of unsuitable soil pH, soil texture and sub surface toxicities such as aluminium. In the glasshouse experiment, the treatments of pH showed no significant difference in plant biomass and root nodulation from the lower pH treatments.
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Castellan, Paolo. "The role of chelating agents and soil pH on heavy metals removal from contaminated soil." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23873.

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Batch washing experiments were used to evaluate extractive decontamination of heavy metal polluted illite soils using ethylenediamine-tetraacetic acid (EDTA) and trans 1,2 cyclohexylenedinitrilo-tetraacetic acid (CDTA). Five series of contaminated illite soils were prepared through adsorption tests using four single-specie 5000 ppm heavy metal solutions of Pb, Cu, Zn, or Cd and one multi-species solution containing 1250 ppm of each heavy metal. The five contaminated illite soils that were prepared contained the following levels of heavy metals per kilogram of soil: (i) 5000 mg Pb, (ii) 3490 mg Cu, (iii) 1566 mg Zn, (iv) 700 mg Cd, (v) 1186 mg Pb; 379 mg Cu; 151 mg Zn; and 125 mg Cd. The soil washing results revealed that EDTA and CDTA are equally effective in releasing heavy metals from the contaminated illite soils, with removal efficiencies ranging from 35% to 99% for the 10$ sp{-5}$ M and 10$ sp{-1}$ M solutions, respectively. The optimum pH range for all chelate concentrations and all heavy metal contaminants is between 3-5. Competition between heavy metals in the soil for the adsorption sites of EDTA and CDTA did not have an impact on the removal efficiencies attained. In addition, the heavy metal preferential adsorption sequence demonstrated by the illite soil was $ rm Pb>Cu>Zn>Cd$ for the single-specie pollutant solutions and $ rm Pb>Cu>Zn approx Cd$ for the multi-species heavy metal pollutant solution, and were shown to be mainly bound to the carbonates and Fe and Mg oxides.
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Penn, Madeleine Lisa Mary. "Electrokinetic soil remediation : effects of pH, temperature and chemical reactions." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266331.

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Phadungchewit, Yuwaree. "The role of pH and soil buffer capacity in heavy metal retention in clay soils /." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74563.

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The concept of soil buffer capacity was used in this study to investigate the capacity of soil to attenuate heavy metals when acid is involved in the soil system. The buffer capacity of soil in this study was found to depend mainly on carbonate content and cation exchange capacity (C.E.C.) of soils. The magnitude of buffer capacity followed the order: illite $>$ montmorillonite $>$ natural clay soil $ gg$ kaolinite.
The study of heavy metal retention in soils was performed both by soil suspension test and soil column test. The results showed that as soils received increasing amounts of acid, high amounts of heavy metals (particularly Pb and Cu) could still be retained if the soils had a high enough buffer capacity to resist a change in pH such that it will not drop to $ Cu > Zn > Cd.$ The order changed to $Pb > Cd > Zn > Cu$ when soils were at low soil solution pH. Relative mobility of heavy metals found from the soil column test followed the order $Pb < Cu < Zn leq Cd.$
The relation of soil buffer capacity and heavy metal retention and movement in the clay soils found from this study revealed that the soil buffer capacity was a parameter that can be used in the prediction and prevention of heavy metal migration in soil. The soil buffer capacity is recommended as a parameter that should be included in the determination of soil properties particularly for the purpose of land application and disposal of wastes with leachates that could contain heavy metals. (Abstract shortened by UMI.)
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Dickey, Juliana Sloan. "The effects of selected nitrogen and sulfur applications on soil pH, water soluble sulfate, DTPA extractable iron, manganese, copper and zinc on selected Arizona soils." Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_190_sip1_w.pdf&type=application/pdf.

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Šumskis, Donatas. "Soil sampling methods for pH tests in soils of different genesis and relief and geostatistical analysis of data." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111207_081512-93669.

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Tasks: 1. To determine a soil sampling method most suitable for pH tests in soils on flat, rolling and hilly relief using regular grid sampling, soil database (Dirv_DB10LT) and soil agrochemical properties database (DirvAgroch_DB10LT). 2. To investigate the suitability of geostatistical methods for spatial distribution of pH data using different soil sampling methods. 3. To determine an impact of different soil sampling methods on spatial distribution of areas to be limed and on the needed amount of lime. Propositions to be defended: 1. Soil sampling plots for detailed pH tests should be shaped using soil database (Dirv_DB10LT) and soil agrochemical properties database (DirvAgroch_DB10LT); in case of high variability of pH values soil sampling plots should be smaller and in case of lower variability of pH values – larger. 2. Interpolation of pH data using IDW, Simple Kriging and Simple Cokriging methods results in decreased share of determined areas of conditionally acid soils when compared to that obtained using not interpolated pH data. 3. The needed amount of lime depends on soil sampling method. Larger needed amount of lime is calculated when soil samples are collected using databases (Dirv_DB10LT) and (DirvAgroch_DB10LT).
Uždaviniai: 1. Nustatyti dirvoţemio pH tyrimams tinkamiausią ėminių paėmimo metodą lyguminio, banguoto ir kalvoto reljefo plotuose, taikant taisyklingą tinklelį, dirvoţemio (Dirv_DB10LT) ir agrocheminių savybių (DirvAgroch_DB10LT) duomenų bazes. 2. Ištirti geostatistinių metodų tinkamumą pH duomenų erdviniam pasiskirstymui, taikant skirtingus ėminių paėmimo metodus. 3. Nustatyti ėminių paėmimo metodų įtaką kalkintinų plotų erdviniam pasiskirstymui ir kalkių reikmei. 32 Ginami disertacijos teiginiai: 1. Išsamiam dirvoţemio pH tyrimui ėminio paėmimo laukelius tikslinga formuoti naudojant dirvoţemių (Dirv_DB10LT) ir agrocheminių savybių (DirvAgroch_DB10LT) duomenų bazes, esant dideliam pH įvairavimui, dirvoţemio ėminius reikėtų imti tankiau, kai įvairavimas maţesnis – rečiau. 2. Dirvoţemio pH duomenis interpoliuojant IDW, paprastojo krigingo ir paprastojo kokrigingo metodais, sąlygiškai rūgščių plotų gaunama maţiau, palyginti su neinterpoliuotais. 3. Priklausomai nuo dirvoţemio ėminio paėmimo metodo, apskaičiuojama skirtinga kalkinių trąšų reikmė, ji didesnė plotuose, kuriuose dirvoţemio ėminiai imami naudojantis (Dirv_DB10LT) ir (DirvAgroch_DB10LT) duomenų bazėmis.
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Pawar, Rakesh Mahadev. "The effect of soil pH on degradation of polycyclic aromatic hydrocarbons." Thesis, University of Hertfordshire, 2012. http://hdl.handle.net/2299/8965.

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The environmental fate of polycyclic aromatic hydrocarbons (PAH) is a significant issue, raising interest in bioremediation. However, the physio-chemical characteristics of PAHs and the physical, chemical, and biological properties of soils can drastically influence in the degradation. Moreover, PAHs are toxic and carcinogenic for humans and their rapid degradation is of great importance. The process of degradation of pollutants can be enhanced by manipulating abiotic factors. The effect of soil pH on degradation of PAHs with a view to manipulating soil pH to enhance the bioremediation of PAH’s was studied. The degradation rate of key model PAHs (Phenanthrene, Anthracene, Fluoranthene, and Pyrene) was monitored in J Arthur Brower’s topsoil modified to a range of pH between pH 4.0 and pH 9.0 at half pH intervals. Photo-catalytic oxidation of PAHs in the presence of a catalyst (TiO2) under UV light at two different wavelengths was studied. The degradation of PAHs during photo-catalytic oxidation was carried out at varying soil pH, whilst the degradation rate of each individual PAH was monitored using HPLC. It was observed that pH 6.5 was most suitable for the photo-degradation of all the PAHs, whilst in general acidic soil had greater photo-degradation rates than alkaline soil pH. Photo-degradation of PAHs at 375 nm exhibited greater degradation rates compared to 254 nm. Phenanthrene at both the wavelengths had greater degradation rate and pyrene has lower degradation rate of the four PAHs. Pure microbial cultures were isolated from road-side soil by shaken enrichment culture and characterized for their ability to grow on PAHs. Bacterial PAH degraders, isolated via enrichment were identified biochemically and by molecular techniques using PCR amplification and sequencing of 16S rDNA. Sequences were analyzed using BLAST (NCBI) and their percentage identity to known bacterial rDNA sequences in the GeneBank database (NCBI) was compared. The 6 bacterial strains were identified as Pseudomonas putida, Achromobacter xylosoxidans, Microbacterium sp., Alpha proteobacterium, Brevundimonas sp., Bradyrhizobium sp. Similarly, fungal PAH degraders were identified microscopically and with molecular techniques using PCR amplification and sequencing of 18S rDNA and identified as Aspergillus niger and Penicillium freii. Biodegradation of four PAHs with two and four aromatic rings were studied in soil with inoculation of the six identified bacteria and two identified fungi over a range of pH. It was observed that pH 7.5 was most suitable for the degradation of all the PAHs maintained in the dark. A degradation of 50% was observed in soil pH 7.5 within first three days which was a seventh of the time taken at pH 5.0 and pH 6.5 (21 days). Greater fungal populations were found at acidic soil pH and alkaline soil pH, in comparison with neutral pH 7.0. Pencillium sp. was found to be more prevalent at acidic pH whilst Aspergillus sp. was found to be more prevalent at pH 7.5-8.0. Bacterial populations were greater at pH 7.5 which was highly correlated with soil ATP levels. It was therefore evident that the greatest rates of degradation were associated with the greatest bacterial population. Soil enzyme activities in general were also greatest at pH 7.5. The converse effect of pH was found with fastest rate of photo-catalytic degradation at the optimal conditions were observed at acidic condition in soil pH 6.5 whilst, the results obtained during biodegradation at the optimal conditions exhibits fastest rate of degradation at alkaline conditions particularly at pH 7.5. Thus, manipulation of soil pH to 7.5 has significant potential to dramatically increase the degradation rate of PAHs.
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BANG, JISU. "DISSOLUTION OF SOIL HEAVY METAL CONTAMINANTS AS AFFECTED BY pH AND REDOX POTENTIAL." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-20020419-105619.

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The solubility of heavy metal (trace metal) contaminants in soils depends on metal concentration, chemical speciation, and conditions such as pH, redox potential, and ionic strength of the soil solution. The objective of this study was to determine the dissolution (potential mobilization) of metal contaminants in response to induced changes in pH and redox potential in soils surrounding abandoned incinerators at two outlying US Marine Corps air fields: MCALF-Bogue and MCOLF-Atlantic. Concentrations of heavy metals measured in 17 soil samples ranged from 1 to 101 mg Zn/kg, 2 to 45 mg Cu/kg,3 to 105 mg Pb/kg, 0.3 to 12 mg Cr/kg, <0.01 to 0.6 mg Cd/kg, <0.1 to 0.6 mg Se/kg, 0. 5 to 81 mg Ba/kg, and 5. Decreasing redox potential (Eh) if soil samples from at the MCALF-Bogue site to 250 mV caused minimal dissolution of Cu, Zn, Pb, and Cr.

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Books on the topic "Soil pH"

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Pavan, Marcos Antonio. Lições de fertilidade do solo: PH. Londrina, PR: Instituto Agronômico do Paraná, 1997.

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Wright, R. J., V. C. Baligar, and R. P. Murrmann, eds. Plant-Soil Interactions at Low pH. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3438-5.

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Date, R. A., N. J. Grundon, G. E. Rayment, and M. E. Probert, eds. Plant-Soil Interactions at Low pH: Principles and Management. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0221-6.

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Sheppard, M. I. Soil sorption of iodine: Effects of pH and enzymes. Pinawa, Man: Whiteshell Laboratories, 1997.

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J, Wright R., Baligar V. C, and Murrmann R. P, eds. Plant-soil interactions at low pH: Proceedings of the Second International Symposium on Plant-Soil Interactions at Low pH, 24-29 June, 1990, Beckley, West Virginia, USA. Dordrecht: Kluwer Academic, 1991.

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International Symposium on Plant-Soil Interactions at Low pH (3rd 1993 Brisbane, Qld.). Plant-soil interactions at low pH: Principles and management : proceedings of the Third International Symposium on Plant-Soil Interactions at Low pH, Brisbane, Queensland, Australia, 12-16 September 1993. Dordrecht: Kluwer Academic, 1995.

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Karst, Tammy Lynn. Dynamics of soil PH fluctuations in reclaimed land in Coniston, Ontario. Sudbury, Ont: Laurentian University, Department of Biology, 1993.

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International Symposium on Plant-Soil Interactions at Low pH (4th 1996 Minas Gerais, Brazil). Plant-soil interactions at low pH: Sustainable agriculture and forestry production : proceedings of the fourth International Symposium on Plant-Soil Interactions at Low pH, Belo Horizonte, Minas Gerais, Brazil, 17-24 March 1996. Campinas: Brazilian Soil Science Society, 1997.

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Price, Cynthia B. Transformation of RDX and HMX under controlled Eh/pH conditions. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1998.

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Gough, L. P. Element concentrations in soils and other surficial materials of Alaska: An account of the concentrations of 43 chemical elements, ash, and pH in soil and other unconsolidated regolith samples. Washington: U.S. G.P.O., 1988.

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Book chapters on the topic "Soil pH"

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Willey, Neil. "Soil pH." In Environmental Plant Physiology, 227–52. New York, NY : Garland Science, 2016.: Garland Science, 2018. http://dx.doi.org/10.1201/9781317206231-10.

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Paz, Carlota Garcia, Teresa Taboada Rodríguez, Valerie M. Behan‐Pelletier, Stuart B. Hill, Pablo Vidal‐Torrado, Miguel Cooper, Peter van Straaten, J. J. Oertli, C. W. Wood, and L. R. Hossner. "Field pH." In Encyclopedia of Soil Science, 271–72. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-3995-9_227.

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Thomas, G. W. "Soil pH and Soil Acidity." In SSSA Book Series, 475–90. Madison, WI, USA: Soil Science Society of America, American Society of Agronomy, 2018. http://dx.doi.org/10.2136/sssabookser5.3.c16.

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Rengel, Zdenko. "Soil pH, Soil Health and Climate Change." In Soil Biology, 69–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20256-8_4.

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Fox, R. L., N. V. Hue, R. C. Jones, and R. S. Yost. "Plant-soil interactions associated with acid, weathered soils." In Plant-Soil Interactions at Low pH, 197–204. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3438-5_21.

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Alley, M. M., and L. W. Zelazny. "Soil Acidity: Soil pH and Lime Needs." In SSSA Special Publications, 65–72. Madison, WI, USA: Soil Science Society of America, 2015. http://dx.doi.org/10.2136/sssaspecpub21.c7.

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Mukherjee, Swapna. "pH, Salinity and Sodicity." In Current Topics in Soil Science, 155–64. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92669-4_15.

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Lund, Eric D. "Measuring and Managing Soil pH." In Soil Science Step-by-Step Field Analysis, 147–58. Madison, WI, USA: American Society of Agronomy and Soil Science Society of America, 2015. http://dx.doi.org/10.2136/2008.soilsciencestepbystep.c12.

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Mclean, E. O. "Soil pH and Lime Requirement." In Agronomy Monographs, 199–224. Madison, WI, USA: American Society of Agronomy, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/agronmonogr9.2.2ed.c12.

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Nyborg, M., E. D. Solberg, S. S. Malhi, S. Takyi, P. Yeung, and M. Chaudhry. "Deposition of anthropogenic sulphur dioxide on soils and resulting soil acidification." In Plant-Soil Interactions at Low pH, 147–56. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3438-5_16.

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Conference papers on the topic "Soil pH"

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Mallarino, Antonio P., and David J. Dunn. "Soil Test Interpretations for Iowa High Ph Soils." In Proceedings of the 1995 Integrated Crop Management Conference. Iowa State University, Digital Press, 1995. http://dx.doi.org/10.31274/icm-180809-504.

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Sunori, Sandeep Kumar, Janmejay Pant, Ajay Kumar Yadav, Ishan Y. Pandya, Kamal Alaskar, N. Thangadurai, and Sudhanshu Maurya. "Soil pH Prediction using Artificial Intelligence." In 2021 2nd Global Conference for Advancement in Technology (GCAT). IEEE, 2021. http://dx.doi.org/10.1109/gcat52182.2021.9587755.

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Beavers, J. A., and R. G. Worthingham. "The Influence of Soil Chemistry on SCC of Underground Pipelines." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27146.

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High-pH stress corrosion cracking (SCC) failures of underground pipelines have occurred in a wide variety of soils, covering a range in color, texture, and pH. No single characteristic has been found to be common to all of the soil samples. Similarly, the compositions of the water extracts from the soils have not shown any more consistency than the physical descriptions of the soils. On several occasions, small quantities of electrolytes have been obtained from beneath disbonded coatings near locations where high-pH stress corrosion cracks were detected. The principle components of the electrolytes were carbonate and bicarbonate ions and it is now recognized that a concentrated carbonate-bicarbonate environment is responsible for this form of cracking. Much of this early research focused on the anions present in the soils and electrolytes. This paper summarizes the results of analyses of soil and electrolyte data in which the relationship between the cations and the occurrence of high-pH and near-neutral pH SCC were evaluated.
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Viacheslav I. Adamchuk, Mark T. Morgan, and James M. Lowenber DeBoer. "Agroeconomic Evaluation of Intense Soil pH Mapping." In 2001 Sacramento, CA July 29-August 1,2001. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2001. http://dx.doi.org/10.13031/2013.7331.

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Sunori, Sandeep Kumar, Santosh Kumar, B. Anandapriya, S. Leena Nesamani, Sudhanshu Maurya, and Manoj Kumar Singh. "Machine Learning Based Prediction of Soil pH." In 2021 5th International Conference on Electronics, Communication and Aerospace Technology (ICECA). IEEE, 2021. http://dx.doi.org/10.1109/iceca52323.2021.9675926.

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Radulescu, Hortensia, Isidora Radulov, Laura Smuleac, and Adina Berbecea. "IMPACT OF SOIL TREATMENT WITH ZEOLITIC VOLCANIC TUFF." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/3.1/s13.32.

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The paper presents the effect of zeolitic volcanic tuff on soil fertility as a consequence of treating soil with zeolitic tuff supplies (clinoptilolite rich tuff). This high silicon tuff type and the essential features of the clinoptilolite has generated in time changes in soil properties like soil reaction, an effective pH buffering, increase of water absorption and cation exchange properties. The effect of using three different doses of zeolitic volcanic tuff, with and without ammonium nitrate addition as fertilizer, on acid soils was assessed by means of physical and chemical soil parameters, biomass and grain yields. The pH increase of soil treated by zeolitic volcanic tuff alone or mixed with ammonium nitrate confirmed the buffering effect and suggested the opportunity of using zeolitic volcanic tuff for conditioning and remedying acid soils. An increase of soil humidity and the enrich of calcium, magnesium and potassium content in soil was also observed. The analysis of extractable mineral content showed the contribution of zeolitic tuff on increasing soil mineral content and fertility. Global soil fertility enhance, particularly in the neighborhood of the rhizosphere, was reflected also by biomass and grain yields increase. The obtained results showed the benefit of using zeolitic volcanic tuff in conjunction with ammonium nitrate to restore the fertility of low fertile soils. The usefulness of this paper is to inform about the zeolitic volcanic tuff features and its action as soil treatment on soil quality. The importance of this research lies in presenting a technology to restore soils with low fertility using a rather cheap natural resource and an alternative for practicing an ecological agriculture.
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"Evaluation of spatial interpolation techniques for mapping soil pH." In 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2011. http://dx.doi.org/10.36334/modsim.2011.c2.zandi.

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Chen, Wen. "Effect of Nitrogen Fertilizer on Fluorine Species and Soil pH in Fluorine-contaminate Soil." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517403.

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Balaji Sethuramasamyraja and Viacheslav I Adamchuk. "Agitated soil measurement method for integrated mapping of soil pH, potassium and nitrate contents." In Mid-Central Conference. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.26851.

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Mallarino, Antonio P., Agustin Pagani, and John E. Sawyer. "Corn and soybean response to soil pH level and liming." In Proceedings of the 21st Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2011. http://dx.doi.org/10.31274/icm-180809-74.

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Reports on the topic "Soil pH"

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Pedersen, Palle. Soil pH and Plant Population Effects on Soybean Yield. Ames: Iowa State University, Digital Repository, 2005. http://dx.doi.org/10.31274/farmprogressreports-180814-1202.

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Pedersen, Palle. Soil pH and Plant Population Effects on Soybean Yield. Ames: Iowa State University, Digital Repository, 2006. http://dx.doi.org/10.31274/farmprogressreports-180814-2766.

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Pedersen, Palle. Soil pH and Plant Population Effects on Soybean Yield. Ames: Iowa State University, Digital Repository, 2004. http://dx.doi.org/10.31274/farmprogressreports-180814-421.

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Graber, Ellen R., Linda S. Lee, and M. Borisover. An Inquiry into the Phenomenon of Enhanced Transport of Pesticides Caused by Effluents. United States Department of Agriculture, July 1995. http://dx.doi.org/10.32747/1995.7570559.bard.

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The objective of this collaborative research project was to determine the factors that may cause enhanced pesticide transport under effluent irrigation. For s-triazines, the potential for enhanced transport through association with effluent dissolved organic matter (OM) was shown to be small in batch and column studies and in numerical simulations. High alkalinity and pH of treated effluents increased soil-solution pH for selected soil-effluent combinations, promoting the dissolution of soil OM and mobilizing otherwise OM-retained pesticides. Evapotranspiration in column studies resulted in increased pore-water concentrations of dissolved OM and some pesticide transport enhancement with the greatest effect observed with OM-poor soils. For ionogenic pesticides, effluent-induced increases in soil-solution pH increased the mobility of pesticides with acid dissociation constants within 2 pH units of the initial soil-solution pH. Effluents high in suspended solids and/or monovalent cations resulted in blockage of soil pores reducing water-flow velocity and/or changing flow paths. Reduced flow resulted in an increase in desorption time of soil sorbed pesticides, increasing the amount available for further transport with the net effect being soil texture dependent. In terms of pesticide degradation in soils, effluents appeared to have only a minor effect for the few pesticides investigated.
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Pagani, Agustin, and Antonio P. Mallarino. Soil pH Change as Affected by the Lime Source and Application Rates. Ames: Iowa State University, Digital Repository, 2011. http://dx.doi.org/10.31274/farmprogressreports-180814-643.

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Kassel, Paul C. Effects of Eggshell and Ag Lime Applications on Soil pH and Crop Yields. Ames: Iowa State University, Digital Repository, 2005. http://dx.doi.org/10.31274/farmprogressreports-180814-1064.

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Kassel, Paul C. Report on the Effects of Eggshells and Aglime on Soil pH and Crop Yields. Ames: Iowa State University, Digital Repository, 2009. http://dx.doi.org/10.31274/farmprogressreports-180814-1173.

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Pagani, Agustin, and Antonio P. Mallarino. Soil pH Change over Time as Affected by the Limestone Sources and Application Rate. Ames: Iowa State University, Digital Repository, 2011. http://dx.doi.org/10.31274/farmprogressreports-180814-1820.

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Pagani, Agustin, and Antonio P. Mallarino. Change of Soil pH over Time as Affected by Lime Sources and Application Rates. Ames: Iowa State University, Digital Repository, 2011. http://dx.doi.org/10.31274/farmprogressreports-180814-726.

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Pagani, Agustin, and Antonio P. Mallarino. Soil pH Change over Time as Affected by Sources and Application Rates of Liming Materials. Ames: Iowa State University, Digital Repository, 2011. http://dx.doi.org/10.31274/farmprogressreports-180814-2294.

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