Solubility relationships of iron, manganese, copper and zinc in alkaline and calcareous soils

Soil Research ◽  
1978 ◽  
Vol 16 (1) ◽  
pp. 19 ◽  
Author(s):  
MK Sinha ◽  
SK Dhillon ◽  
KS Dhillon ◽  
S Dyanand
Keyword(s):  
Organic Matter Content ◽  
Calcareous Soils ◽  
Matter Content ◽  
Solution Ph ◽  
Copper And Zinc ◽  
Oxidation Reduction ◽  
Activity Product ◽  
Solubility Products ◽  
Iron Manganese ◽  
Manganese Copper

The solubility relationships of the native forms of iron, manganese, copper, and zinc in alkaline and calcareous soils were determined by a modification of the chelate equiIibrium method proposed by Norvell. The experimentally determined activity product (Fe3+)(OH-)3 in soils was found to vary within the reported range of solubility products of amorphous hydrous ferric oxides. Soils which undergo alternate cycles of reversible, oxidation-reduction processes were found to maintain higher solubility of iron and manganese than other soils. Soil pH and organic matter content were found to significantly affect the solubilities of all the four micronutrient cations. The solubility relationships of manganese, copper, and zinc have been expressed as a function of soil solution pH. Probable mechanisms controlling the solubility of these metals in alkaline and calcareous soils are discussed.

Relationship between soil composition and retention capacity of terbumeton onto chalky soils

2009 ◽  
Vol 6 (3) ◽  
pp. 245 ◽  
Author(s):  
Achouak El Arfaoui ◽  
Stéphanie Sayen ◽  
Eric Marceau ◽  
Lorenzo Stievano ◽  
Emmanuel Guillon ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Properties ◽  
Environmental Fate ◽  
Organic Matter Content ◽  
Calcareous Soils ◽  
Matter Content ◽  
Soil Composition ◽  
Retention Capacity ◽  
Wide Range ◽  
Soil Components

Environmental context. The wide use of pesticides for pest and weed control contributes to their presence in underground and surface waters, which has led to a continuously growing interest in their environmental fate. Soils play a key role in the transfer of these compounds from the sprayer to the water as a result of their capacity to retain pesticides depending on the soil components. The knowledge of soil composition should enable one to predict pesticide behaviour in the environment. Abstract. Eight calcareous soils of Champagne vineyards (France) were studied to investigate the adsorption of the herbicide terbumeton (TER). A preliminary characterisation of the soil samples using X-ray diffraction (XRD), elemental and textural analyses, revealed a wide range of soil properties for the selected samples. The adsorption isotherms of TER were plotted for all samples. The determination of soil properties, which significantly correlated with the Kd distribution coefficient, allowed identification of organic matter and CaCO3 as the two main soil components that govern the retention of the herbicide. Organic matter was the predominant phase involved in the retention but its role was limited by the presence of calcite. Finally, the ratio of CaCO3 content to organic matter content was proposed as a useful parameter to predict the adsorption of terbumeton in chalky soils. The evolution of Kd as a function of this ratio was successfully described using an empirical model.

Influence of Complexation on the Uptake by Plants of Iron, Manganese, Copper and Zinc

1991 ◽  
Vol 42 (4) ◽  
pp. 515-519 ◽  
Author(s):  
STUART H. LAURIE ◽  
NIGEL P. TANCOCK ◽  
STEPHEN P. MCGRATH ◽  
J. ROGER SANDERS
Keyword(s):  
Copper And Zinc ◽  
Iron Manganese ◽  
Manganese Copper

scholarly journals Distribution of iron and iron compounds in the Kemeri - Jaunkemeri occurence of sulphide water

2015 ◽  
Vol 2 ◽  
pp. 244
Author(s):  
Janis Prols ◽  
Ērika Teirumnieka ◽  
Edmunds Teirumnieks
Keyword(s):  
Organic Matter ◽  
Groundwater Modeling ◽  
Organic Matter Content ◽  
Matter Content ◽  
Iron Compounds ◽  
Migration Forms ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
And Migration ◽  
Formation Of Complexes

Iron concentrations, distribution and migration forms, depending on pH and oxidation – reduction potential, were analyzed in case of the Kemeri-Jaunkemeri occurrence (area about 240 km<sup>2</sup>) of sulphide containing water (maximal sulphides concentration – 74 mg/l), located in Latvia. Iron content was investigated in 457 wells located within all area of occurrence. Those wells were installed to two aquifers: the Quarternary multi-aquifer and Salaspils aquifer, where occurrence of sulphide containing groundwater is distributed. All groundwater of occurrence is classified in four types depending on oxygen, sulphides and organic matter content in the groundwater.  Modeling of groundwater migration forms was carried out, and it is stated that iron migrates basically as Fe<sup>2+</sup> in oxygen and suphides non-containing water. Migration forms are influenced by concentration of organic matter in the aquifer. The portion of Fe<sup>2+</sup> migrating in a form of free decreases due to formation of complexes with fulvic and humic acids, which can reach 36.5% of all migration forms. Iron migrates as Fe(OH)<sub>3</sub>  in oxygen containing water (more than 99% of determined forms). Presence of iron is ascertained also in sulphides containing water, where iron migrates basically as (98.8% of determined forms).  This occurs due to formation of complexes with sulphydes – FeHS<sup>-</sup> and Fe(HS)<sub>2</sub><sup>o</sup>.

Some mineral levels in Australian wheat

1974 ◽  
Vol 14 (70) ◽  
pp. 663 ◽  
Author(s):  
GM Murphy ◽  
DP Law
Keyword(s):  
North American ◽  
Total Production ◽  
Sodium Potassium ◽  
Copper And Zinc ◽  
Australian Wheat ◽  
Mineral Levels ◽  
Iron Manganese ◽  
Manganese Copper

Samples of wheat drawn principally from southern Queensland, but including samples representative of total production in all other States, were analysed for sodium, potassium, iron, manganese, copper and zinc. In comparison with available data for North American wheat, Australian wheat contained on average 40 times less sodium, appreciably less potassium and iron, but similar concentrations of manganese and copper. The importance of these results in relation to grain feeding of sheep and cattle is discussed.

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