Log in

Relevant bibliographies by topics / Soil chemistry / Journal articles

Journal articles on the topic 'Soil chemistry'

To see the other types of publications on this topic, follow the link: Soil chemistry.

Author: Grafiati

Published: 4 June 2021

Last updated: 30 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Soil chemistry.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Vodianitsky, Yu. "SOIL CHEMISTRY TRENDS." Dokuchaev Soil Bulletin, no. 66 (December 11, 2010): 64–82. http://dx.doi.org/10.19047/0136-1694-2010-66-64-82.

Full text

Abstract:

In modern soil chemistry, four main directions are being actively developed: 1) chemistry of organic matter, 2) biochemical processes in soils, 3) chemical basis of soil protection, 4) soil study aschemical membrane and a pool of chemical elements. Interest to the study of organic matter, soil contamination and the role of soil as a chemical component of the environment reflects pragmatic trends in modern soil chemistry. Many advances in soil chemistry are now associated with the use of new nonspecific methods of analysis, primarily physical ones. The greatest progress has been made inidentification of individual chemical compounds in soil when using synchrotron X-ray technology.

APA, Harvard, Vancouver, ISO, and other styles

2

TATE, ROBERT L. "SOIL CHEMISTRY: THE ULTIMATE CHEMIST'S CHALLENGE." Soil Science 161, no. 12 (December 1996): 811. http://dx.doi.org/10.1097/00010694-199612000-00001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

DONER, HARVEY E. "Soil Chemistry." Soil Science 156, no. 3 (September 1993): 206–7. http://dx.doi.org/10.1097/00010694-199309000-00011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Essington, Michael E. "Environmental Soil Chemistry." Soil Science 162, no. 3 (March 1997): 229–31. http://dx.doi.org/10.1097/00010694-199703000-00009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Sparks, Donald L. "Soil Physical Chemistry." Soil Science 145, no. 3 (March 1988): 231–32. http://dx.doi.org/10.1097/00010694-198803000-00012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Smernik, Ron. "Environmental Soil Chemistry." Agriculture, Ecosystems & Environment 100, no. 1 (November 2003): 94–95. http://dx.doi.org/10.1016/s0167-8809(03)00222-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Kretzschmar, Ruben. "Environmental Soil Chemistry." Geoderma 121, no. 1-2 (July 2004): 154–55. http://dx.doi.org/10.1016/j.geoderma.2003.10.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Lochman, V., V. Mareš, and V. Fadrhonsová. "Development of air pollutant deposition, soil water chemistry and soil on Šerlich research plots, and water chemistry in a surface water source." Journal of Forest Science 50, No. 6 (January 11, 2012): 263–83. http://dx.doi.org/10.17221/4624-jfs.

Full text

Abstract:

  In 1986 (1987) research plots were established in a forest stands on the south-western slope of &Scaron;erlich Mt., Orlické hory Mts. (Kristina Colloredo-Mansfeld – Forest Administration Opočno), at the altitude of 950 to 970 m, to study deposition, chemistry of precipitation and soil water and development of soil chemistry. The plots were established on a clear-cut area, in a young stand and a mature stand of spruce, in a mature beech stand, and in an advanced growth of spruce and European mountain ash. The content of solutes in creek water was studied at the same time. Since 1993 the concentration of substances in precipitation water intercepted in the summit part of &Scaron;erlich Mt. has been measured. Research on water chemistry in the stands terminated in 1997. Soil analyses were done in 1986 (1987), 1993 and 1999. The load of acid air pollutants in these forest ecosystems was high in the eighties. After 1991 the deposition of H<sup>+</sup>, S/SO<sub>4</sub><sup>2–</sup>, N/NO<sub>3</sub><sup>– </sup>+ NH<sub>4</sub><sup>+</sup>, Mn, Zn, Al decreased. Similarly, an increase in pH was observed in soil water, and the concentrations of SO<sub>4</sub><sup>2–</sup>, and N, Al compounds decreased. But in 1993 the concentrations of SO<sub>4</sub><sup>2–</sup> and Al increased again under the spruce stand for several months. The concentrations of NO<sub>3</sub><sup>–</sup>, Mn, Zn and Al in the stream water also gradually decreased in the nineties. On the contrary, the average values of S-ions increased compared to those of 1987 to 1991. Strongly acid soil reaction developed in deeper layers until 1993. In the second half of the nineties the pH/H<sub>2</sub>O value somewhat increased again, however the reserve of K, Mg, Ca available cations in the mineral soil constantly decreased. The saturation of sorption complex by basic cations in the lower layer of rhizosphere did not reach even 10% in 1999. The forest ecosystems of &Scaron;erlich Mt. were also loaded by a high fall-out of Pb, and increased fall-out of Cu. The lack of balance of N-compound transformations and consumption in the soil and increased leaching of N in the form of nitrates contribute to soil acidification on the investigated plots.

APA, Harvard, Vancouver, ISO, and other styles

9

Habumugisha, Vincent, Khaldoon A. Mourad, and Léonidas Hashakimana. "The Effects of Trees on Soil Chemistry." Current Environmental Engineering 6, no. 1 (March 27, 2019): 35–44. http://dx.doi.org/10.2174/2212717806666181218141807.

Full text

Abstract:

Background: Trees often affect the chemical properties of soil, positively or negatively. Objective: This paper studied the effects of Podocarpus falcatus and Markhamia lutea trees on soil chemistry in Ruhande Arboretum, Rwanda. Methods: Soil samples were collected using Zigzag method from Arboretum forest of Ruhande at different depths (0-20, 20-40 and 40-60 cm). For each plot, 25 samples were collected to make one composite sample per plot for each depth. Results: The results showed that tree species contributed to the changes of soil chemistry along the depths of the soil layers. The laboratory analyses showed that there was a high significant influence of tree species on soil pH and Aluminum ions. However, it was observed that there was no significant influence of Podocarpus falcatus and Markhamia lutea species on the available phosphorus or on the total exchangeable acidity. On the other hand, analyzing soil samples under Markhamia lutea showed an increase in the total nitrogen and a decrease in the pH and available phosphorus. Conclusion: Trees affect the chemical properties of soils. Therefore, it is recommended that under acidic soils, for example, forestry and agroforestry actors should use less acidifying tree species, such as Markhamia lutea and Podocarpus falcatus.

APA, Harvard, Vancouver, ISO, and other styles

10

Sasse, Joelle. "Plant Chemistry and Morphological Considerations for Efficient Carbon Sequestration." CHIMIA 77, no. 11 (November 29, 2023): 726–32. http://dx.doi.org/10.2533/chimia.2023.726.

Full text

Abstract:

Carbon sequestration to soils counteracts increasing CO2 levels in the atmosphere, and increases soil fertility. Efforts to increase soil carbon storage produced mixed results, due to the multifactorial nature of this process, and the lack of knowledge on molecular details on the interplay of plants, microbes, and soil physiochemical properties. This review outlines the carbon flow from the atmosphere into soils, and factors resulting in elevated or decreased carbon sequestration are outlined. Carbon partitioning within plants defines how much fixed carbon is allocated belowground, and plant and microbial respiration accounts for the significant amount of carbon lost. Carbon enters the soil in form of soluble and polymeric rhizodeposits, and as shoot and root litter. These different forms of carbon are immobilized in soils with varying efficiency as mineral-bound or particulate organic matter. Plant-derived carbon is further turned over by microbes in different soil layers. Microbial activity and substrate use is influenced by the type of carbon produced by plants (molecular weight, chemical class). Further, soil carbon formation is altered by root depth, growth strategy (perennial versus annual), and C/N ratio of rhizodeposits influence soil carbon formation. Current gaps of knowledge and future directions are highlighted.

APA, Harvard, Vancouver, ISO, and other styles

11

Schnitzer, Morris. "The in situ analysis of organic matter in soils." Canadian Journal of Soil Science 81, no. 3 (August 1, 2001): 249–54. http://dx.doi.org/10.4141/s00-064.

Full text

Abstract:

Traditionally, studies on soil organic matter (SOM) begin with the extraction of SOM from soils, its fractionation into humic acid, fulvic acid, and humin, followed by de-ashing of each fraction. These are tedious, laborious and inefficient procedures that do not provide any chemical information on these materials. Instead, recently developed methods such as solid-state 13C NMR and pyrolysis – field ionization mass spectrometry (Py-FIMS) can now be used for the in situ analysis of SOM in soils. These methods identify the major chemical components of SOM without extractions and fractionations, and yield valuable information on the main chemical structures in these materials. A better knowledge of the structural chemistry of SOM will help SOM chemists and other soil scientists to better understand the complex chemical and biochemical reactions that occur in soils, and will enable them to develop practices that will improve soil management and soil productivity. Key words: Extraction, fractionation, solid state 13C NMR, pyrolysis-field ionization mass spectrometry, chemical composition

APA, Harvard, Vancouver, ISO, and other styles

12

Litaor, M. Iggy, and Adel M. Elprince. "Chemistry of Soil Solutions." Arctic and Alpine Research 20, no. 4 (November 1988): 501. http://dx.doi.org/10.2307/1551348.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Parikh, Sanjai J. "Soil and Water Chemistry." Soil Science 181, no. 1 (January 2016): 44. http://dx.doi.org/10.1097/ss.0000000000000130.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Cheney, Marcos A. "Principles of Soil Chemistry." Soil Science 163, no. 12 (December 1998): 983–84. http://dx.doi.org/10.1097/00010694-199812000-00009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

SPARKS, DONALD L. "Chemistry of Soil Solutions." Soil Science 145, no. 4 (April 1988): 313. http://dx.doi.org/10.1097/00010694-198804000-00012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Tan, Kim, and RICHMOND J. BARTLETT. "Principles of soil Chemistry." Soil Science 157, no. 5 (May 1994): 330. http://dx.doi.org/10.1097/00010694-199405000-00009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Sparks, Donald L. "MILESTONES IN SOIL CHEMISTRY." Soil Science 171, Suppl. 1 (June 2006): S47—S50. http://dx.doi.org/10.1097/01.ss.0000228050.62345.96.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Sharpley, Andrew N. "Soil and Water Chemistry." Journal of Environment Quality 33, no. 4 (2004): 1583. http://dx.doi.org/10.2134/jeq2004.1583.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Percival, H. J., T. W. Speir, and A. Parshotam. "Soil solution chemistry of contrasting soils amended with heavy metals." Soil Research 37, no. 5 (1999): 993. http://dx.doi.org/10.1071/sr98055.

Full text

Abstract:

The soil solution chemistry of heavy metal amended soils is of great importance in assessing the bioavailability of heavy metals and their toxicity to the soil biota. Three contrasting soils were amended with Cd(II), Cu(II), Ni(II), Pb(II), Zn(II), and Cr(III) nitrate salts at rates of 10–100 mmol/kg. This concentration range was chosen to encompass a wide range of effects on sensitive soil biochemical properties as part of a larger project. Soil solutions were extracted and analysed for pH, and for concentrations of heavy metals, and major cations and anions. Heavy metal speciation was calculated with the GEOCHEM-PC model. Heavy metal concentrations in the soil solutions increased both in absolute terms and as a percentage of added heavy metal as amendment rates increased. This observation is due to decreasing specific adsorption (caused by decreasing pH induced by the amendments), and to increasing saturation of cation exchange sites. For all 3 soils, the percentage increase commonly follows the order Cr(III) < Pb < Cu < Ni < Cd < Zn. The percentage of each metal held in the soil solution increased from soil to soil as cation exchange capacity, and therefore sorptivity, decreased. Both the concentration and activity of free heavy metal ions were substantially lower than the corresponding total metal concentration. This was ascribed to ion-pairing of metal ions with anions, particularly nitrate introduced in the amending solutions, as well as to increases in ionic strength as a result of amendment. Metal-anion species were mainly inorganic but where Cu and Pb were relatively low in concentration because of strong adsorption by the soils, organic complexation was likely to be significant. Speciation trends were similar for the 3 soils but different in magnitude.

APA, Harvard, Vancouver, ISO, and other styles

20

Giesler, R., and U. Lundström. "Soil Solution Chemistry: Effects of Bulking Soil Samples." Soil Science Society of America Journal 57, no. 5 (September 1993): 1283–88. http://dx.doi.org/10.2136/sssaj1993.03615995005700050020x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Wagner, Diane, Mark J. F. Brown, and Deborah M. Gordon. "Harvester ant nests, soil biota and soil chemistry." Oecologia 112, no. 2 (October 1, 1997): 232–36. http://dx.doi.org/10.1007/s004420050305.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Bukombe, Benjamin, Peter Fiener, Alison M. Hoyt, Laurent K. Kidinda, and Sebastian Doetterl. "Heterotrophic soil respiration and carbon cycling in geochemically distinct African tropical forest soils." SOIL 7, no. 2 (October 1, 2021): 639–59. http://dx.doi.org/10.5194/soil-7-639-2021.

Full text

Abstract:

Abstract. Heterotrophic soil respiration is an important component of the global terrestrial carbon (C) cycle, driven by environmental factors acting from local to continental scales. For tropical Africa, these factors and their interactions remain largely unknown. Here, using samples collected along topographic and geochemical gradients in the East African Rift Valley, we study how soil chemistry and fertility drive soil respiration of soils developed from different parent materials even after many millennia of weathering. To address the drivers of soil respiration, we incubated soils from three regions with contrasting geochemistry (mafic, felsic and mixed sediment) sampled along slope gradients. For three soil depths, we measured the potential maximum heterotrophic respiration under stable environmental conditions and the radiocarbon content (Δ14C) of the bulk soil and respired CO2. Our study shows that soil fertility conditions are the main determinant of C stability in tropical forest soils. We found that soil microorganisms were able to mineralize soil C from a variety of sources and with variable C quality under laboratory conditions representative of tropical topsoil. However, in the presence of organic carbon sources of poor quality or the presence of strong mineral-related C stabilization, microorganisms tend to discriminate against these energy sources in favour of more accessible forms of soil organic matter, resulting in a slower rate of C cycling. Furthermore, despite similarities in climate and vegetation, soil respiration showed distinct patterns with soil depth and parent material geochemistry. The topographic origin of our samples was not a main determinant of the observed respiration rates and Δ14C. In situ, however, soil hydrological conditions likely influence soil C stability by inhibiting decomposition in valley subsoils. Our results demonstrate that, even in deeply weathered tropical soils, parent material has a long-lasting effect on soil chemistry that can influence and control microbial activity, the size of subsoil C stocks and the turnover of C in soil. Soil parent material and its control on soil chemistry need to be taken into account to understand and predict C stabilization and rates of C cycling in tropical forest soils.

APA, Harvard, Vancouver, ISO, and other styles

23

GASSER, UBALD G., STEPHAN J. JUCHLER, and HANS STICHER. "CHEMISTRY AND SPECIATION OF SOIL WATER FROM SERPENTINITIC SOILS." Soil Science 158, no. 5 (November 1994): 314–22. http://dx.doi.org/10.1097/00010694-199411000-00002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Rusakova, E. A., E. Y. Sukhacheva, A. L. Ivanov, and A. E. Hartemink. "Konstantin Gedroiz (1872–1932)—the Initial Studies of Soil Colloid Chemistry and Soil Salinity." Moscow University Soil Science Bulletin 78, no. 5 (December 2023): 425–38. http://dx.doi.org/10.3103/s0147687423050058.

Full text

Abstract:

Abstract We present a review of the life and scientific legacy of the founder of soil colloid chemistry Konstantin Gedroiz. The phenomenon of absorption was first studied in the mid-1800s, and Gedroiz started working on base exchange and absorption in soils in 1906. Based on the general pattern of cation exchange reactions, he proposed the concept of “absorption capacity” and “soil absorption complex”, developed ideas about exchange acidity and the rate of exchange reactions, revealed the unique role of absorbed sodium and potassium in soil processes, and proposed the theory of the accumulation of sodium due to exchange reactions. He was one of the first to classify soil on the basis of the absorbing complexes and cations, which was a new approach in pedology. He used the climate classification of soils, and described Podzols, Laterites, and Chernozems in terms of their absorbing complexes and cations. The system of classification worked for mature soils in which pedogenic processes had proceeded to such an extent that the profile characteristics reflected a climatic region, but was less effective in alluvial soils and eroded soils. His studies established the connections between chemical and physical processes and the morphology of soils. He studied the evolution of saline soils from a chemical point of view, which led to the practical recommendations for chemical reclamation of Solonetz and liming of acidic soils. Gedroiz’s work was groundbreaking but insufficiently known outside Russia until his books have been translated into English and German in the late 1920s. The soil microbiologist Selman Waksman in the 1925 translated 11 of his papers into English, and the United State Department of Agriculture distributed copies of these translations. In 1927 a textbook on chemical analysis, “Die chemische Bodenanalyse”, was published; in 1930 the books “Der adsorbierende Bodenkomplex und die adsorbierten Bodenkationen als Grundlage der genetischen Bodenklassification” and “On the Problem of exchangeable Hydrogen and exchangeable Aluminium in acid soils”, a 1931 – “Die Lehre vom Adsorptionsvermögen der Böden”.

APA, Harvard, Vancouver, ISO, and other styles

25

Skjemstad, JO, P. Clarke, JA Taylor, JM Oades, and SG Mcclure. "The chemistry and nature of protected carbon in soil." Soil Research 34, no. 2 (1996): 251. http://dx.doi.org/10.1071/sr9960251.

Full text

Abstract:

The nature of organic carbon in the < 2, 2–20, 20–53, 53–200, and 200–2000 mu m fractions of four surface soils was determined using solid state 13C nuclear magnetic resonance (n.m.r.) spectroscopy with cross polarisation and magic angle spinning (CP/MAS). Analyses were repeated after high energy ultraviolet photo-oxidation was performed on the three finest fractions. All four soils, studied contained appreciable amounts of physically protected carbon while three of the soils contained even higher amounts of charcoal. It was not possible to measure the charcoal content of soils directly, however, after photo-oxidation, charcoal remained and was identified by its wood-like morphology revealed by scanning electron microscopy (SEM) together with a highly aromatic chemistry determined by solid state 13C n.m.r. Charcoal appears to be the major contributor to the 130 ppm band seen in the n.m.r. spectra of many Australian soils. By using the aromatic region in the n.m.r. spectra, an approximate assessment of the charcoal distribution through the size fractions demonstrated that more than 88% of the charcoal present in two of the soils occurred in the < 53 �m fractions. These soils contained up to 0.8 g C as charcoal per 100 g of soil and up to 30% of the soil carbon as charcoal. Humic acid extractions performed on soil fractions before and after photo-oxidation suggest that charcoal or charcoal-derived material may also contribute significantly to the aromatic signals found in the n.m.r. spectra of humic acids. Finely divided charcoal appears to be a major constituent of many Australian soils and probably contributes significantly to the inert or passive organic carbon pool recognised in carbon turnover models.

APA, Harvard, Vancouver, ISO, and other styles

26

Conte, Pellegrino, Roberta Bertani, Paolo Sgarbossa, Paola Bambina, Hans-Peter Schmidt, Roberto Raga, Giuseppe Lo Papa, Delia Francesca Chillura Martino, and Paolo Lo Meo. "Recent Developments in Understanding Biochar’s Physical–Chemistry." Agronomy 11, no. 4 (March 24, 2021): 615. http://dx.doi.org/10.3390/agronomy11040615.

Full text

Abstract:

Biochar is a porous material obtained by biomass thermal degradation in oxygen-starved conditions. It is nowadays applied in many fields. For instance, it is used to synthesize new materials for environmental remediation, catalysis, animal feeding, adsorbent for smells, etc. In the last decades, biochar has been applied also to soils due to its beneficial effects on soil structure, pH, soil organic carbon content, and stability, and, therefore, soil fertility. In addition, this carbonaceous material shows high chemical stability. Once applied to soil it maintains its nature for centuries. Consequently, it can be considered a sink to store atmospheric carbon dioxide in soils, thereby mitigating the effects of global climatic changes. The literature contains plenty of papers dealing with biochar’s environmental effects. However, a discrepancy exists between studies dealing with biochar applications and those dealing with the physical-chemistry behind biochar behavior. On the one hand, the impression is that most of the papers where biochar is tested in soils are based on trial-and-error procedures. Sometimes these give positive results, sometimes not. Consequently, it appears that the scientific world is divided into two factions: either supporters or detractors. On the other hand, studies dealing with biochar’s physical-chemistry do not appear helpful in settling the factions’ problem. This review paper aims at collecting all the information on physical-chemistry of biochar and to use it to explain biochar’s role in different fields of application.

APA, Harvard, Vancouver, ISO, and other styles

27

Mackenzie, D. E., and A. G. Christy. "The role of soil chemistry in wine grape quality and sustainable soil management in vineyards." Water Science and Technology 51, no. 1 (January 1, 2005): 27–37. http://dx.doi.org/10.2166/wst.2005.0004.

Full text

Abstract:

This study aimed to establish if there is any evidence that soil mineralogical and/or chemical composition influence the composition and quality of wine grapes. In the initial phase of the study, soils and grapes were sampled in two riesling vineyards in South Australia. Soils were analysed for a wide range of total major and trace elements; soil cation extracts and grape juices were analysed for 27 trace elements by ICP-MS and ICP-AES. The results show that grape juice properties such as Baumé and titratable acidity (TA) are clearly correlated with several plant-available trace elements in the soil. Most notable of these are Ca, Sr, Ba, Pb and Si. Soil clay content also plays a (lesser) role. The cations Ca, Sr, Ba and Pb are closely similar to one another in their relationships to Baumé and TA, strongly indicating that the correlations are real. It is evident from our results that soil cation chemistry does indeed have an influence on wine grape composition. Such knowledge has the potential to be used in better tailoring grape varieties to soils, and in managing – or modifying – soils for optimum viticultural results and better wines in a more sustainable way.

APA, Harvard, Vancouver, ISO, and other styles

28

Curtin, D., H. Steppuhn, F. Selles, and A. R. Mermut. "Sodicity in irrigated soils in Saskatchewan: Chemistry and structural stability." Canadian Journal of Soil Science 75, no. 2 (May 1, 1995): 177–85. http://dx.doi.org/10.4141/cjss95-025.

Full text

Abstract:

Irrigation with sodic waters may damage soil structure, but neither the processes involved nor the critical levels of exchangeable Na have been well defined for prairie soils. We examined two irrigated soils from southern Saskatchewan on which sodicity damage had occurred to determine the processes and the chemical conditions (exchangeable Na and electrolyte concentration) that cause structural damage. Dispersion of clays in the upper 20 cm of the profile seemed to be the primary cause of structural deterioration. Examination of irrigated soil by scanning electron microscopy (SEM) showed that sand- and silt-size grains were stripped of binding colloidal particles and that large pore spaces had formed, creating very loose aggregates. In one of the soils, physical instability was observed at an exchangeable-Na percentage (ESP) of only about 10%, indicating that some soils in Saskatchewan are relatively sensitive to sodicity. With a 1:5 (wt vol−1) soil/water extract, the electrical conductivity (EC) needed to prevent clay dispersion when soil suspensions were mechanically agitated was about 0.2 dS m−1 in the absence of Na, increasing to 1.5–2 dS m−1 at a sodium adsorption ratio of 20 (mmolc L−1)0.5. Sodic conditions greatly altered soil chemical behavior, with the most sodic soil having an extremely high level of water-extractable P. In a laboratory experiment, addition of Ca (as CaCl2 or gypsum) to replace Na reduced water-extractable P from 78 mg kg−1 to less than 20 mg kg−1. The effect of sodicity on P solubility was likely due to a decrease in surface electrostatic potential as exchangeable Na increased. Increased solubility of P along with the potential for runoff and erosion from Na-affected soils could result in increased inputs of P to surface waters. Key words: Sodicity hazard, clay disperson, phosphate solubility

APA, Harvard, Vancouver, ISO, and other styles

29

Carter, M. R., J. O. Skjemstad, and R. J. MacEwan. "Comparison of structural stability, carbon fractions and chemistry of krasnozem soils from adjacent forest and pasture areas in south-western Victoria." Soil Research 40, no. 2 (2002): 283. http://dx.doi.org/10.1071/sr00106.

Full text

Abstract:

Basalt-derived krasnozems are generally well-structured soils; however, there is a concern that intensive agricultural practices may result in an adverse decline in soil organic carbon, organic matter chemistry, and structural quality over time. A study was conducted on loam to silty clay loam krasnozems (Ferrosols) near Ballarat in south-western Victoria to assess changes in soil C, soil structural stability, and C chemistry, at the 0–10 cm soil depth, under 3 paired sites consisting of adjacent long-term forest (Monterey pine or eucalyptus) v. 30 year cropping [3 year pasture–2 year crops (potato and a root crop or grain)]. Soil structural stability was also characterised in the A and B horizons under long-term eucalyptus and several cropped sites. Organic C levels in the A horizons for all the soils were relatively high, ranging from 46 to 89 g/kg. A lower organic C (30&percnt;), associated mainly with loss of the sand-sized (>53 m) macro-C fraction, and a decrease in exchangeable Ca and Mg was found in the agricultural soils, compared with forest soils. Physically protected C in the <53 m fraction, as indicated by UV photo-oxidation, was similar among soils. Wet sieving indicated a decline of both C and N concentration in water-stable aggregates and the degree of macro-aggregation under agricultural soils, compared with the forest soils. However, soil structural changes under cropping were mainly related to a decline in the >5 mm sized aggregates, with no deleterious increase in the proportion of 0.10 mm aggregates. Solid state 13C NMR spectroscopy indicated a decrease in O-alkyl and alkyl C under pasture and cropping compared with forest soils, which was in agreement with the decline in the macro-C fraction. Characterisation of C chemistry following UV photo-oxidation showed that charcoal C (dominant presence of aryl C) accounted for 30&percnt; of the total soil organic C, while other functional groups (polysaccharides and alkyl C) were probably protected within micro-aggregates. Based on soil organic C and aggregate stability determinations alone, the implications for soil physical quality, soil loss, and diffuse pollution appear minimal. macroorganic carbon, soil aggregation, charcoal, photo-oxidation, potato rotation, CP/MAS 13C NMR spectroscopy.

APA, Harvard, Vancouver, ISO, and other styles

30

Huntington, Thomas G., David R. Peart, James Hornig, Douglas F. Ryan, and Stuart Russo-Savage. "Relationships between soil chemistry, foliar chemistry, and condition of red spruce at Mount Moosilauke, New Hampshire." Canadian Journal of Forest Research 20, no. 8 (August 1, 1990): 1219–27. http://dx.doi.org/10.1139/x90-161.

Full text

Abstract:

We measured soil chemical properties and red spruce (Picearubens Sarg.) foliar chemistry and crown condition in the spruce-fir vegetation zone at Mount Moosilauke, New Hampshire. Our measurements were made in or adjacent to permanent plots stratified by elevation, aspect, and soil type. Soils were analyzed for exchangeable Ca, Mg, K, and Al and extractable P and Mn. Foliage was analyzed for Ca, Mg, K, Al, P, and Mn. Based upon the best available provisional standards for red spruce foliar element sufficiency, 1-year-old needles showed a moderate P deficiency (1000–1400 mg•kg−1), Mg levels in a transitional zone from deficiency to sufficiency (600–720 mg•kg−1), and Ca and K levels in a range sufficient for good growth. Foliar element concentrations were not correlated with crown condition. Extractable soil P (kg•ha−1 and cmol ion charge•kg−1) was positively correlated with crown condition. The only significant relationships found between soil exchangeable base cations and crown condition were positive correlations for Ca and Mg (kg•ha−1) in the Oi + Oe horizon. Several factors suggest that red spruce at high elevations at Mount Moosilauke was not stressed from base cation limitations: (i) foliar element concentrations were generally in sufficient ranges, (ii) crown condition was not related to foliar element concentration, (iii) relationships between exchangeable soil cations and foliar concentration or crown condition were generally not significant or were inconsistent between soil horizons.

APA, Harvard, Vancouver, ISO, and other styles

31

Fotovat, Amir, Ravendra Naidu, and Malcolm E. Sumner. "Water : soil ratio influences aqueous phase chemistry of indigenous copper and zinc in soils." Soil Research 35, no. 4 (1997): 687. http://dx.doi.org/10.1071/s96086.

Full text

Abstract:

The effect of dilution on the composition of soil solutions of 8 contrasting soils ranging in pH from 5·3 to 8·8 with reference to zinc (Zn) and copper (Cu) was studied. Soil samples were equilibrated with water in various water:soil ratios for 24 h. Equilibrium solutions were extracted and analysed for dissolved organic carbon (DOC), and major and minor elements. The separation of the soil solution at field capacity (FC) was carried out by a drainage method. Although the concentration of ions decreased upon dilution, the total quantity of sodium (Na), potassium (K), Zn, Cu, and DOC extracted per unit of soil weight increased. In contrast, the total quantity of Ca and Mg decreased in most soils. The ratio of Zn and Cu to Ca correlated to dilution level, whereas the ratio of Zn to monovalent cations decreased in low pH soils. The relationship between the quantity of Zn and Cu at different levels of the water : soil ratio in the soils studied showed that the concentration of these trace metals at FC soil moisture can be estimated from the soil extract. Increases in soil moisture content led to a marked change in the ion-pair, free hydrated metal concentrations, and complexation. Log Zn2+ was linearly related to solution pH. Zinc solubility was not consistent with published solubilities of any common minerals. Also, Zn solubility in alkaline soils tended to be higher than reported values in the literature, indicating that soluble metal–organic ligand complexation was underestimated in these soils. The relationship between pH and log Zn2+ was affected by dilution in several ways.

APA, Harvard, Vancouver, ISO, and other styles

32

Jones, James M. C., Elizabeth A. Webb, Michael D. J. Lynch, Trevor C. Charles, Pedro M. Antunes, and Frédérique C. Guinel. "Does a carbonatite deposit influence its surrounding ecosystem?" FACETS 4, no. 1 (June 1, 2019): 389–406. http://dx.doi.org/10.1139/facets-2018-0029.

Full text

Abstract:

Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems. Using a deposit within the Great Lakes–St. Lawrence forest in northern Ontario, Canada, we investigated the effect of a carbonatite on soil chemistry and on the structure of plant and soil microbial communities. This was done using a vegetation survey conducted above and around the deposit, with corresponding soil samples collected for determining soil nutrient composition and for assessing microbial community structure using 16S/ITS Illumina Mi-Seq sequencing. In some soils above the deposit a soil chemical signature of the carbonatite was found, with the most important effect being an increase in soil pH compared with the non-deposit soils. Both plants and microorganisms responded to the altered soil chemistry: the plant communities present in carbonatite-impacted soils were dominated by ruderal species, and although differences in microbial communities across the surveyed areas were not obvious, the abundances of specific bacteria and fungi were reduced in response to the carbonatite. Overall, the deposit seems to have created microenvironments of relatively basic soil in an otherwise acidic forest soil. This study demonstrates for the first time how carbonatites can alter ecosystems in situ.

APA, Harvard, Vancouver, ISO, and other styles

33

Crawford, DM, TG Baker, and J. Maheswaran. "Changes in soil chemistry associated with changes in soil-pH in Victorian pastures." Soil Research 33, no. 3 (1995): 491. http://dx.doi.org/10.1071/sr9950491.

Full text

Abstract:

Relationships between changes in soil pH and changes in other soil chemical properties were examined using data from a survey of 107 pasture sites from across Victoria. At each site, soil samples (0-5, 5-10, 10-15 and 15-20 cm depths) were taken from the pasture and an adjacent undisturbed (reference) area for chemical analysis. Changes in soil chemical properties were inferred from differences between pasture and reference soils. Increases in extractable Al and extractable Mn and decreases in the sum of exchangeable cations were associated with decreases in pH. Changes in soil organic C, total soil N and total soil P were not associated with changes in pH but were related to pasture composition at each site. Increases in total soil P and exchangeable Ca, and decreases in exchangeable Mg were partly attributed to the application of superphosphate. Decreases in electrical conductivity are discussed in relation to vegetation and salinization.

APA, Harvard, Vancouver, ISO, and other styles

34

Griffiths, R. P., J. E. Baham, and B. A. Caldwell. "Soil solution chemistry of ectomycorrhizal mats in forest soil." Soil Biology and Biochemistry 26, no. 3 (March 1994): 331–37. http://dx.doi.org/10.1016/0038-0717(94)90282-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Chorover, J. "Environmental Soil Chemistry, Second Edition." Vadose Zone Journal 2, no. 3 (August 1, 2003): 441. http://dx.doi.org/10.2113/2.3.441.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Seaman, John C. "Soil Chemistry with Applied Mathematics." Soil Science Society of America Journal 70, no. 2 (March 2006): 709. http://dx.doi.org/10.2136/sssaj2005.0005br.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Hmielowski, Tracy. "Soil Chemistry and One Health." CSA News 63, no. 12 (December 2018): 6–7. http://dx.doi.org/10.2134/csa2018.63.1202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Chorover, Jon. "Environmental Soil Chemistry, Second Edition." Vadose Zone Journal 2, no. 3 (2003): 441. http://dx.doi.org/10.2136/vzj2003.0441.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Chorover, Jon. "Environmental Soil Chemistry, Second Edition." Vadose Zone Journal 2, no. 3 (August 2003): 441. http://dx.doi.org/10.2136/vzj2003.4410.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Kulmala, M., and T. Petaja. "Soil Nitrites Influence Atmospheric Chemistry." Science 333, no. 6049 (September 15, 2011): 1586–87. http://dx.doi.org/10.1126/science.1211872.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

SPARKS, DONALD L., and THEODORE H. CARSKI. "Principles of Soil Chemistry. 1982." Soil Science 142, no. 6 (December 1986): 367. http://dx.doi.org/10.1097/00010694-198612000-00005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

GUPTA, S. C. "Chemistry of Soil Organic Matter." Soil Science 146, no. 5 (November 1988): 388. http://dx.doi.org/10.1097/00010694-198811000-00016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Neal, Colin. "Future prospects for soil chemistry." Geoderma 96, no. 4 (July 2000): 362–64. http://dx.doi.org/10.1016/s0016-7061(00)00034-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

McGrath, S. P. "Soil chemistry and its applications." Environmental Pollution 87, no. 2 (1995): 256. http://dx.doi.org/10.1016/0269-7491(95)90002-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Nortcliff, Stephen. "Soil chemistry and its applications." Endeavour 17, no. 4 (January 1993): 202. http://dx.doi.org/10.1016/0160-9327(93)90075-e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Cresser, Malcolm S., Anthony C. Edwards, and Zakia Parveen. "Soil chemistry and land use." Endeavour 17, no. 3 (January 1993): 127–31. http://dx.doi.org/10.1016/0160-9327(93)90102-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Sharpley, Andrew N. "Environmental Soil Chemistry, Second Edition." Journal of Environmental Quality 32, no. 6 (November 2003): 2444. http://dx.doi.org/10.2134/jeq2003.2444.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Holford, I. C. R. "Soil chemistry and its applications." Agriculture, Ecosystems & Environment 48, no. 3 (April 1994): 309. http://dx.doi.org/10.1016/0167-8809(94)90114-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Clay, D. E. "Chemistry of soil organic matter." Soil and Tillage Research 17, no. 3-4 (September 1990): 335. http://dx.doi.org/10.1016/0167-1987(90)90050-n.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Andrieux, Benjamin, David Paré, Julien Beguin, Pierre Grondin, and Yves Bergeron. "Boreal-forest soil chemistry drives soil organic carbon bioreactivity along a 314-year fire chronosequence." SOIL 6, no. 1 (May 15, 2020): 195–213. http://dx.doi.org/10.5194/soil-6-195-2020.

Full text

Abstract:

Abstract. Following a wildfire, organic carbon (C) accumulates in boreal-forest soils. The long-term patterns of accumulation as well as the mechanisms responsible for continuous soil C stabilization or sequestration are poorly known. We evaluated post-fire C stock changes in functional reservoirs (bioreactive and recalcitrant) using the proportion of C mineralized in CO2 by microbes in a long-term lab incubation, as well as the proportion of C resistant to acid hydrolysis. We found that all soil C pools increased linearly with the time since fire. The bioreactive and acid-insoluble soil C pools increased at a rate of 0.02 and 0.12 MgC ha−1 yr−1, respectively, and their proportions relative to total soil C stock remained constant with the time since fire (8 % and 46 %, respectively). We quantified direct and indirect causal relationships among variables and C bioreactivity to disentangle the relative contribution of climate, moss dominance, soil particle size distribution and soil chemical properties (pH, exchangeable manganese and aluminum, and metal oxides) to the variation structure of in vitro soil C bioreactivity. Our analyses showed that the chemical properties of podzolic soils that characterize the study area were the best predictors of soil C bioreactivity. For the O layer, pH and exchangeable manganese were the most important (model-averaged estimator for both of 0.34) factors directly related to soil organic C bioreactivity, followed by the time since fire (0.24), moss dominance (0.08), and climate and texture (0 for both). For the mineral soil, exchangeable aluminum was the most important factor (model-averaged estimator of −0.32), followed by metal oxide (−0.27), pH (−0.25), the time since fire (0.05), climate and texture (∼0 for both). Of the four climate factors examined in this study (i.e., mean annual temperature, growing degree-days above 5 ∘C, mean annual precipitation and water balance) only those related to water availability – and not to temperature – had an indirect effect (O layer) or a marginal indirect effect (mineral soil) on soil C bioreactivity. Given that predictions of the impact of climate change on soil C balance are strongly linked to the size and the bioreactivity of soil C pools, our study stresses the need to include the direct effects of soil chemistry and the indirect effects of climate and soil texture on soil organic matter decomposition in Earth system models to forecast the response of boreal soils to global warming.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!