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  • Iron
  • Springer  (14)
  • Annual Reviews
  • Elsevier
  • Springer Science + Business Media
  • 1980-1984  (14)
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Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Proteoid root morphology and function inLupinus albus (1981)
    Springer
    Plant and soil 60 (1981), S. 143-147 
    Details
    ISSN: 1573-5036
    Keywords: Acidity ; Iron ; Lupinus albus ; Manganese reduction ; Proteoid roots ; Root exudates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Current theories of phosphorus uptake by plants imply that they can augment diffusion to their root axes by the development of abundant root hairs or mycorrhizas. Some phosphorus efficient plants have root morphology with multi-branched roots and localised regions of densely packed root hairs, which we suggest is better suited to the retention of substances exuded by the roots than uptake of substances moving to the root by diffusion. Evidence of substantial exudation by the proteoid roots ofLupinus albus is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02377120
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of calcium carbonate and organic matter on the growth and concentration of iron and manganese in sorghum (Sorghum bicolor) (1981)
    Springer
    Plant and soil 60 (1981), S. 295-300 
    Details
    ISSN: 1573-5036
    Keywords: Calcium carbonate ; Iron ; Manganese ; Organic matter ; Sorghum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of CaCO3 and organic matter on the availability of iron and manganese was studied on sorghum (Sorghum bicolor). Addition of calcium carbonate caused significant decrease in dry matter and grain yield. But yields tended to increase with the addition of organic matter at the rate of 15 t/ha. The iron concentration decreased with the addition of CaCO3 at all the stages of crop growth. Like iron, concentration of manganese also decreased with the increase in added CaCO3. Organic matter increased the iron concentration both at seedling and flowering stage. The concentration of manganese was, however, dependent on the stage of the crop.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374113
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  • 3
    Electronic Resource
    Electronic Resource
    The acquisition of phosphorus byLupinus albus L. (1982)
    Springer
    Plant and soil 68 (1982), S. 19-32 
    Details
    ISSN: 1573-5036
    Keywords: Iron ; Lupins ; Lupinus albus L. ; Manganese ; Phosphorus ; Proteoid root ; Soil/Root interface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary It has been demonstrated by an agar film technique thatL. albus can cause the breakdown of colloids of iron/silicate, iron/phosphate, aluminium/silicate and aluminium phosphate and destabilise suspensions of manganese dioxide, calcium mono-hydrogen phosphate and ferric hydroxide. Dissolution of these compounds was most marked in areas adjacent to proteoid roots (dense clusters of secondary laterals of limited growth which develop on lateral roots) and parts of the tap root. Soil associated with these regions of the root system contained more reductants and chelating agents than the bulk soil. Soil from around the roots ofL. albus exhibited much greater reducing and chelating activity than that associated with the roots of rape and buckwheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374724
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  • 4
    Electronic Resource
    Electronic Resource
    The acquisition of phosphorus byLupinus albus L. (1982)
    Springer
    Plant and soil 68 (1982), S. 33-41 
    Details
    ISSN: 1573-5036
    Keywords: Iron ; Lupins ; Lupinus albus L. ; Manganese ; Phosphorus ; Proteoid roots ; Soil/root interface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The development of proteoid roots byLupinus albus was studied under glasshouse conditions in acid-washed sand with varying iron and phosphorus supply and in three contrasting soils (acid, neutral and alkaline) at a range of phosphorud levels. Aqueous extracts of soil from around the roots were compared with regard to their pH and their reducing and chelating activity. In both experiments, proteoid formation was predominantly affected by the phosphorus status of the plant. Manganese uptake in the second experiment was related to proteoid root development and decreased as phosphorus supply increased. The ability ofL. albus to utilise soil and added phosphorus decreased as pH of the soil increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374725
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  • 5
    Electronic Resource
    Electronic Resource
    The acquisition of phosphorus byLupinus albus L. (1983)
    Springer
    Plant and soil 70 (1983), S. 107-124 
    Details
    ISSN: 1573-5036
    Keywords: Citrate ; Iron ; Lupins ; Lupinus albus L. ; Phosphorus ; Polymers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Large quantities of citrate ions have been shown to be secreted by the roots ofLupinus albus. It is postulated that these react in the soil to form ferric hydroxy phosphate polymers which diffuse to the root surface where they are degraded by the action of reducing agents in the presence of an Fe II uptake mechanism balanced by hydrogen ion secretion. Some known chemical behaviour of Fe III and citrate which supports this postulate is reviewed. Evidence is also presented which suggests that much of the Fe absorbed circulates within the root system and is subsequently precipitated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374754
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of sulphur on the yield and concentration of copper, manganese, iron and molybdenum in berseem (Trifolium alexandrinum) grown on two different soils (1980)
    Springer
    Plant and soil 56 (1980), S. 229-234 
    Details
    ISSN: 1573-5036
    Keywords: Berseem yield ; Copper ; Iron ; Manganese ; Molybdenum ; Concentrations ; Sulphur effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A screen-house experiment with 0, 25, 50 and 75 ppm S was conducted to study the effect of S on the yield and, Mn, Cu, Fe and Mo concentrations of berseem (Trifolium alexandrinum) at three stages of growth in a normal and reclaimed soil. Higher levels of S decreased the yield in both the soils. Yield in normal soil was much higher than in reclaimed soil. Application of S increased Cu, Mn, and Fe concentrations in all cuts in both soils. Molybdenum concentration was lowered following S application in both the soils in all the cuts. Molybdenum content increased with the stage of plant growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205851
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of waterlogging and lime or organic matter additions on the distribution of trace metals in an acid soil (1981)
    Springer
    Plant and soil 59 (1981), S. 317-326 
    Details
    ISSN: 1573-5036
    Keywords: Acid soil ; Complexed metals ; Iron ; Iron oxides ; Lime ; Manganese ; Manganese oxides ; Organic matter ; Redistribution ; Trace metals ; Waterlogging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A study has been made of the influence of waterlogging on the distribution of trace metals between the various reservoirs in which they are held in a soil. Selective extractants have been used to remove metals held in 4 ways: soil solution and exchangeable; specifically adsorbed by inorganic sites; adsorbed or chelated by organic sites; adsorbed onto oxide surfaces. Waterlogging over a period of 16 weeks resulted in the release of both manganese and iron from the organic — and oxide — bound reservoirs to the soluble, exchangeable and inorganic reservoirs. Addition of both 1% dried grass (as an actively decomposing organic material) and 1% CaCO3 to the soil resulted in an acceleration of the metal redistribution. For manganese, selective extraction methods accounted for the distribution of all the metal in the reservoirs studied. In the case of iron however, there appeared to be some release from a reservoir not being extracted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184203
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  • 8
    Electronic Resource
    Electronic Resource
    Self-diffusion of zinc and iron in soils as affected by pH, CaCO3, moisture, carrier and phosphorus levels (1981)
    Springer
    Plant and soil 63 (1981), S. 377-393 
    Details
    ISSN: 1573-5036
    Keywords: Capacity factor ; Iron ; Self-diffusion coefficients ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Self-diffusion coefficients of zinc and iron were determined in acid soil of Palampur and alluvial soil of Ludhiana under varying pH, CaCO3, moisture, carrier and phosphorus levels. Increase in pH caused tremendous reductions in self-diffusion coefficients (Da) of both zinc and iron in soil. The selfdiffusion coefficients of both these elements were drastically reduced as a result of CaCO3 application. The Da values of zinc and iron increased with the decrease in moisture tension and increase in carrier and phosphorus levels. The decrease in Da values were associated with increase in capacity factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370038
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of soil waterlogging on subsequent plant growth and trace metal content (1982)
    Springer
    Plant and soil 66 (1982), S. 423-427 
    Details
    ISSN: 1573-5036
    Keywords: Cobalt ; Copper ; Iron ; Manganese ; Plant uptake ; Trace metals ; Waterlogging ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The uptake of trace metals by two plant species (French bean and maize) has been measured on two soils subjected to various waterlogging regimes. Uptake of both manganese and iron was increased due to soil waterlogging, although reoxidation of the soil affected iron more than manganese. Zinc and copper uptake was influenced by a species factor; French bean (Phaseolus vulgaris) showed preferential uptake of zinc, whereas maize (Zea mays) took up copper preferentially. Uptake of cobalt by both species was increased due to waterlogging, following the pattern of manganese. The abilities of these species to take up trace metals from soil followed the pattern predicted by selective extraction of soil for manganese, iron and cobalt, but not for zinc and copper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183810
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of soil salinity on the electro-chemical and chemical kinetics of some plant nutrients in submerged soils (1983)
    Springer
    Plant and soil 75 (1983), S. 455-472 
    Details
    ISSN: 1573-5036
    Keywords: Ammonification ; Eh ; Flooded soils ; Iron ; Manganese ; Nitrate reduction ; Phosphorus ; pH ; Salinity and extractable cations ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The electro-chemical and chemical kinetics of six California rice soils were significantly influenced by the presence of salts up to an EC of 9 mmhos/cm in saturation extract (ECe). Subsamples of each soil salinity treatment were incubated for periods up to 10 weeks after flooding. Most of the changes in Eh and pH values took place in the first 3–4 weeks after submergence. Salinity decreased pH values, but slightly increased the redox-potential. Both ammonification and nitrate reduction were significantly decreased, by increasing soil salinity. Salinity up to 9 mmhos/cm did not affect levels of Bray and Kurtz extractable P, but increased the water extractable Ca, Mg, K and Mn. In DTPA extract, salinity in incubated soils had no effect on Zn in 4 soils, but it decreased Fe in acid and neutral soils. Possible explanations for the electro-chemical and chemical kinetic changes due to flooding and salinity are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02369980
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