The effect of liming a neutral soil on the uptake of manganese by plants

1957 ◽  
Vol 8 (4) ◽  
pp. 301-314 ◽  
Author(s):  
L. H. P. Jones
Keyword(s):  
Neutral Soil

Performance of waterborne copper/organic wood preservatives in an AWPA E14 soft-rot laboratory soil bed test using modified soil

Holzforschung ◽  
2017 ◽  
Vol 71 (9) ◽  
pp. 759-763 ◽  
Author(s):  
Darrel Nicholas
Keyword(s):  
Treated Wood ◽  
Soft Rot ◽  
Major Effect ◽  
White Rot ◽  
Equivalent Efficacy ◽  
Particulate Copper ◽  
Neutral Soil ◽  
Commercial Copper ◽  
Organic Formulations ◽  
Better Than

AbstractSoil chemistry is known to have a major effect on the degradation of treated wood by basidiomycete fungi in laboratory and exterior ground-contact exposures. However, this topic received little attention from a soft-rot (SR) decay perspective. In the present paper, laboratory SR tests were performed with two different types of forest soils, which were also modified. Test samples, made ofPinus glabra(Walt.) (pine) were treated with four commercial copper/organic waterborne preservatives. In addition, soluble or particulate copper and the organic co-biocides quarternary ammonia compound or tebuconazole, were individually examined. After 19 months of soil bed exposure, moderate to severe degradation was observed in all treated samples in both soils. Surprisingly, microscopic examination showed minimal SR decay. Samples in the neutral soil had extensive tunneling bacterial deterioration and the best performance was observed with both copper/quaternary commercial formulations. Samples in the acidic soil appeared to have some white-rot and bacterial deterioration and all four commercial copper/organic formulations showed good statistically equivalent efficacy. For samples treated with only copper, the particulate copper samples performed statistically equivalent or slightly better than amine copper, while samples treated with only the organic quarternary or tebuconazole performed poorly in both soils.

Can we improve soil properties and plant biomass using rock powder as soil amendment?

2021 ◽  
Author(s):  
Lena Reifschneider ◽  
Vinzenz Franz Eichinger ◽  
Evelin Pihlap ◽  
Noelia Garcia-Franco ◽  
Anna Kühnel ◽  
...  
Keyword(s):  
Climate Change ◽  
Plant Growth ◽  
Large Scale ◽  
Plant Biomass ◽  
New Mineral ◽  
Severe Drought ◽  
Rock Powder ◽  
Overburden Material ◽  
Neutral Soil ◽  
Mitigate Climate Change

<p>The application of rock powder is an option to improve soil fertility while valorising the overburden material produced by industries. The “enhanced weathering” of silicate rock has also gained recent interest in the scientific community for its potential to mitigate climate change. However, the effect of rock powder on the soil physical properties remains unclear, especially under climate change (e.g., increasing drought events). Prior to any large scale application of rock powder, it is crucial to disentangle the potential effects of rock powder application on its environment. In a mesocosm experiment, we explored the effect of three rock powders on plant biomass, soil aggregation and organic carbon (OC) allocation within aggregates, in two soils with clayey and sandy textures, under regular watering or severe drought conditions. We demonstrate that the rock powder was the third factor after drought and soil texture significantly affecting the plant growth, resulting in a significant plant biomass decrease ranging from - 13 % to - 42 % compared with the control. We mainly attribute this effect to the increase of the already neutral soil pH, along with the release of excessive heavy metal amounts at a toxic range for the plant. Yet, we found that adding rock powder to the soil resulted in an increase of the relative amount of microaggregates in the soil by up to + 70 %, along with a re-distribution of OC within the fine fractions of the soil (up to + 32 % of OC in < 250 µm fractions). The new mineral-mineral and organo-mineral interactions promoted by the rock powder addition could potentially favour OC persistence in soil on the long term. With our results, we insist on the potential risks for plant growth associated to the application of rock powder when not handled properly. In addition to the current enthusiasm around the capacity of rock powder to enhance carbon sequestration in the inorganic form, we also encourage scientists to focus their research on its effect on soil structure properties and OC storage.</p>

Corrosion Properties of 20# Pipelines Steel in Near-Neutral Soils

2010 ◽  
Vol 129-131 ◽  
pp. 312-316
Author(s):  
Wen He Wang ◽  
Jun Yi ◽  
Shi Ming Shen
Keyword(s):  
Open Circuit Potential ◽  
Low Carbon Steel ◽  
Open Circuit ◽  
Corrosion Mechanism ◽  
Low Carbon ◽  
Corrosion Properties ◽  
Corrosion Rates ◽  
Cathode Area ◽  
Neutral Soil ◽  
Anode Area

Corrosion law and mechanism of 20# low-carbon steel in near-neutral soil along Yangtze River in Nanjing are studied by experiments of buried specimens in laboratory. In three kinds of soils, the corrosion features and products are analyzed by EDS and XRD, and the relation of corrosion rates, open-circuit potential and polarization curve with times are tested. The results indicated that corrosion rates changed incessantly along. On the condition of the same times, specimens and different soil samples, the corrosive degree of 1# and 2# specimens are serious, but 3# specimen is serious lightly. The corrosion products are main non-crystalloid, Fe (OH) 3 and Fe2O3.The changing tendency of different times and soils is different, and accordant with that of corrosion rates. The corrosion mechanism is discussed lastly, in near-neutral soils, oxygen is deoxidized and OH- ions are created in cathode area, iron is oxidized and the hydration of Fe2+ ions is created with water from soil in anode area, and Fe2+ are converted into more steady products Fe（OH）3 and Fe2O3.

Mobility and distribution of zinc forms in columns of an acid, a neutral, and a calcareous soil treated with three organic zinc complexes under laboratory conditions

Soil Research ◽  
2002 ◽  
Vol 40 (5) ◽  
pp. 791 ◽  
Author(s):  
J. Novillo ◽  
A. Obrador ◽  
L. M. López-Valdivia ◽  
J. M. Alvarez
Keyword(s):  
Humic Acid ◽  
Calcareous Soil ◽  
Water Soluble ◽  
Soil Profiles ◽  
Sequential Fractionation ◽  
Organic Zinc ◽  
Exchangeable Fraction ◽  
Neutral Soil ◽  
Acid Nature ◽  
Extractable Zn

Three liquid zinc (Zn) fertilisers were mixed with the upper 1.5 cm of columns representing 3 different soil profiles: Aquic Haploxeralf, of an acid nature and with hydromorphic problems; Calcic Haploxeralf, of a neutral nature; and Typic Xerorthents, of a calcareous nature. They were periodically irrigated for 60 days. Most of the applied Zn remained in the top of the soil when it was added as Zn-lignosulfonate plus EDTA or Zn-2-hydroxy-1,2,3-propanotricarboxilate. When Zn-EDTA plus fulvic and humic acid fertiliser was applied, Zn migrated and distributed throughout the soil resulting in losses of Zn by leaching of 2.29% in acidic soil, 27.36% in neutral soil, and 10.5% in calcareous soil of the Zn applied. The 3 fertilisers produce sufficient concentrations of the bioavailable Zn forms in the Ap horizons (DTPA and Mehlich-3 extractable Zn) for the cultivation of different plants. In the calcareous soil, which contained free CaCO3, the amount of Zn extracted by Mehlich-3 was higher than in soils with no free CaCO3. Distribution of Zn in the soil was studied at the beginning and end of the experiment by means of one sequential fractionation and showed that added Zn remained in more labile fractions for uptake by plants in the acid and neutral soils when compared with the control. When Zn was added to calcareous soil, no amount of Zn was detected in the water-soluble plus exchangeable fraction at the end of experiment for any Zn fertiliser source.

Bioaccumulation of thallium in a neutral soil as affected by solid-phase association

2015 ◽  
Vol 159 ◽  
pp. 208-212 ◽  
Author(s):  
Zuzana Grösslová ◽  
Aleš Vaněk ◽  
Martin Mihaljevič ◽  
Vojtěch Ettler ◽  
Maria Hojdová ◽  
...  
Keyword(s):  
Solid Phase ◽  
Neutral Soil

Effect of ferric chloride additions on the solubility of ferric ion in a near‐neutral soil

1982 ◽  
Vol 5 (11) ◽  
pp. 1285-1295 ◽  
Author(s):  
W.A. Norvell ◽  
W.L. Lindsay
Keyword(s):  
Ferric Chloride ◽  
Ferric Ion ◽  
Neutral Soil

scholarly journals Effect of DC Currents and Strain on Corrosion of X80 Steel in a Near-Neutral Environment

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1601
Author(s):  
Zeyu Ma ◽  
Wei Wu ◽  
Pengxiong Zhao ◽  
Yong Dan
Keyword(s):  
Electrochemical Impedance ◽  
Steel Corrosion ◽  
Open Circuit ◽  
Applied Strain ◽  
Stray Current ◽  
Corrosion Scale ◽  
Surface Analysis Techniques ◽  
Neutral Soil ◽  
X80 Steel ◽  
Current Densities

The corrosion behavior of X80 steel in a near-neutral soil-simulated solution under various DC stray currents and applied strains was investigated using electrochemical measurements (open circuit potential, linear polarization, and electrochemical impedance spectroscopy) and surface analysis techniques. Our results show that a DC stray current has a substantially greater effect on steel corrosion compared to applied strain. However, strain could slow down the corrosion rate in specific conditions by affecting the composition of corrosion products and the structure of the corrosion scale on the surface of the steel. Although the porosity of the corrosion scale of steel without an applied strain will increase with increasing DC currents, once strain is applied, the corrosion scale will become denser. Furthermore, both DC currents and strain can promote steel pitting, and the number and size of pitting holes will increase significantly with an increase in current densities.

scholarly journals (96) Color Generation in Hydrangea Sepals as Controlled by Metal Ion Complexes

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1046C-1046
Author(s):  
Henry D. Schreiber ◽  
Timothy Berry ◽  
Nam Trant
Keyword(s):  
Oxalic Acid ◽  
Metal Ions ◽  
Metal Ion ◽  
Color Change ◽  
Heat Of Solution ◽  
Acid Complex ◽  
Color Changes ◽  
Weak Complexes ◽  
Neutral Soil ◽  
Complexes With Metal Ions

The sepals of many hydrangea cultivars change color from red in basic/neutral soil to blue in acidic soil. This change is generally attributed to Al(III) becoming mobile in acidic soils, allowing it to be absorbed through the roots as a citric acid complex; the ion of Al(III) then forms a blue complex in the sepals with an anthocyanin that is red in the absence of Al(III). This study investigated selected metal ions that might also result in similar color changes in hydrangea sepals. Model anthocyanins such as cyanidin and delphinidin glucoside readily formed blue complexes with metal ions with a high charge/size ratio [that is: Mo(VI), U(VI), and Zr(IV), in addition to Al(III)]. The anthocyanins only formed weak complexes with Fe(III) and Ga(III), and no complexes with Mg(II) and Mn(II). In order for the color change to occur in the sepals, though, the hydrangea must first be able to selectively concentrate the metal ion in the plant from the soil as a complex with citric or oxalic acid. The complexation of Al(III) with the organic acid is shown by the measurement of the heat of solution of citric and oxalic acid in Al(III) solutions as half that of the acids in just water. The presence of Al(III) also enhanced the solubility of oxalic acid in water. Mo(VI) likewise enhanced the organic acid's solubility, while Fe(III), Fe(II), and U(VI) did not appreciably affect the solubility. Mo(VI) and similar ions may be candidates to artificially induce bluing of hydrangea sepals, instead of the current use of Al(III).

scholarly journals Ecological requirements of wild service tree (Sorbus torminalis [L.] CRANTZ.) and service tree (Sorbus domestica L.) in relation with their utilization in forestry and landscape

2008 ◽  
Vol 54 (No. 5) ◽  
pp. 216-226 ◽  
Author(s):  
V. Paganová
Keyword(s):  
Oak Forests ◽  
Soil Reaction ◽  
Beech Forests ◽  
Direct Sunlight ◽  
Ecological Requirements ◽  
Sorbus Torminalis ◽  
Neutral Soil ◽  
Short Time ◽  
Wild Service Tree ◽  
Ecological Differences

Environmental conditions in sites with service tree and wild service tree are assessed and some ecological differences between them are also identified. Both species are regarded as prospective woody plants with a possibility of wider utilization in forestry and landscape arrangements. They are tolerant to direct sunlight and short-time water deficit in the soils, therefore they are suitable for the afforestation of arid and warm sites (even clear unstocked areas). They prefer soils with favourable physical characteristics and adsorbing complex with acid to neutral soil reaction. Both the mentioned taxa have valuable timber, so the potential of their utilization in forestry is also in conditions of oak and beech-oak forests. They should be used as valuable admixture in oak forests or substitute the sensitive beech in drier sites of oak-beech forests.

Sign in / Sign up

Export Citation Format

Share Document