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  • Articles  (10)
  • Iron  (10)
  • 1980-1984  (10)
  • 1945-1949
  • 1982  (10)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (10)
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  • Articles  (10)
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  • 1980-1984  (10)
  • 1945-1949
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Topic
  • 1
    Electronic Resource
    Electronic Resource
    Availability of iron, manganese, zinc and phosphorus in submerged sodic soil as affected by amendments during the growth period of rice crop (1982)
    Springer
    Plant and soil 66 (1982), S. 37-43 
    Details
    ISSN: 1573-5036
    Keywords: Farmyard manure ; Gypsum ; Iron ; Manganese ; Phosphorus ; Rice ; Rice husk ; Sodic soil ; Submergence ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effect of amendments, gypsum (12.5 tonnes/ha), farmyard manure (30 tonnes/ha), rice husk (30 tonnes/ha) and also no amendment (control) on the availability of native Fe, Mn and P and applied Zn in a highly sodic soil during the growth period of rice crop under submerged conditions was studied in a field experiment. Soil samples were collected at 0, 30, 60 and 90 days of crop growth. Results showed that extractable Fe (1N NH4OAC pH 3) and Mn (1N NH4OAC pH 7) increased with submergence upto 60 days of crop growth but thereafter remained either constant or declined slightly. Application of farmyard manure and rice husk resulted in marked improvement of these elements over gypsum and control. Increases in extractable Mn (water soluble plus exchangeable) as a result of submergence and crop growth under different amendments were accompanied by corresponding decreases in easily reducible Mn content of the soil. Application of 40 kg zinc sulphate per hectare to rice crop could substantially raise the available Zn status (DTPA extractable) of the soil in gypsum and farmyard manure treated plots while the increase was only marginal in rice husk and control plots indicating greater fixation of applied Zn. Available P (0.5M NaHCO3 pH 8.5) behaved quite differently and decreased in the following order with crop growth: gypsum〉rice husk〉farmyard manure〉control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02203400
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  • 2
    Electronic Resource
    Electronic Resource
    Sorption and desorption of trace elements bySpartina alterniflora detritus (1982)
    Springer
    Plant and soil 66 (1982), S. 69-80 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Estuaries ; Heavy metals ; Iron ; Manganese ; Plant densities ; Salt marshes ; Sorption ; Spartina alterniflora ; Trace elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Element and extractant-specific desorption of Mn, Fe, Cu, and Zn fromSpartina alterniflora detritus was observed. Desorption of a substantial fraction of the total detrital Mn, Fe, Cu and Zn occured rapidly when the detritus was treated with 0.1N HCl or 1 MgCl2. This treatment removed precipitated/coprecipitated and adsorbed trace elements, respectively, suggesting that a large fraction of detritus-bound trace elements are in readily exchangeable, surface reaction sites. The carboxylic acid functional group cation exchange capacity of the detritus also suggests an important role of surface exchange reactions in the dynamics of trace elements during decomposition. The rate and magnitude of changes in the trace element content of detritus has important implications for estuarine biogeochemical cycling of these elements including the potential for biological uptake of trace elements by detritus-consuming fauna.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02203404
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of rhizosphere pH on the availability and uptake of Fe, Mn and Zn (1982)
    Springer
    Plant and soil 66 (1982), S. 361-372 
    Details
    ISSN: 1573-5036
    Keywords: French beans ; Iron ; Manganese ; Micronutrients ; Phaseolus vulgaris ; pH Rhizosphere ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In pot experiments the relationships between rhizosphere pH, the extractable levels of Fe, Mn and Zn in the soil and their uptake into the roots and shoots of dwarf French beans have been studied. Variations in rhizosphere pH were induced by applying three different sources of nitrogencholine phosphate, ammonium phosphate and calcium nitrate-to an initially homogenised soil (preadjusted to either pH 7 or 8). The rhizosphere pH was found to be significantly lower following the application of either ammonium or choline phosphates and to be increased by calcium nitrate treatment. The Fe and Zn contents of both shoot and root were inversely proportional to rhizosphere pH. The Mn contents also increased with decreasing pH but a sharp increase was apparent below pH 5.5. The shoot Fe, Zn and Mn content were significantly correlated with the extractable levels determined in the rhizosphere and non-rhizosphere soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02183802
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  • 4
    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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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    Cu x Mn interaction and the availability of Zn, Cu, Fe, Mn and P in waterlogged rice soils (1982)
    Springer
    Plant and soil 69 (1982), S. 131-134 
    Details
    ISSN: 1573-5036
    Keywords: Alluvial soil ; Copper ; Interaction ; Iron ; Manganese ; Moisture ; Phosphorus ; Rice ; Waterlogging ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Laboratory incubation experiments were conducted with three clay loam lowland rice soils (Haplustalf) to study the effect of application of three different levels of Cu(0, 1.25, 2.5 ppm) and Mn (0, 10, 20 ppm) in all possible combinations on the changes in the DTPA extractable Zn, Cu, F, Mn and Brays 2 extractable P in soil. The results showed that application of Cu decreased the content of extractable Zn, Fe, Mn and P in soils, the rate of decrease gradually declining with the progress of incubation period. Application of Mn also depressed the content of extractable Cu, Fe and P but increased that of extractable Zn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185713
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  • 7
    Electronic Resource
    Electronic Resource
    Changes in the status of micronutrients in soil with long term applications of chemical fertilizers, lime and manure (1982)
    Springer
    Plant and soil 64 (1982), S. 437-441 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Fertilizers ; Intensive cropping ; Iron ; Lime ; Manure ; Manganese ; Micronutrient ; Weedicide ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary An assessment of the status of available micronutrients has been made in a long term field experiment on a fixed rotation of soybean-potato-wheat at the Ranchi Agricultural College, Kanke on acid soil. Results of eight years fertilizer applications with lime has resulted in reduction of available micronutrients whereas the FYM application with balanced dose of chemical fertilizers increased the available micronutrients of soil. The maximum loss of 1.0 Zn and 13.2 Fe kg/ha respectively were from the lime treated plots with balanced dose of fertilizers and the highest gain of 0.26 Zn, 1.08 Cu, 13.2 Fe and 54.0 Mn kg/ha respectively were recorded from the FYM treated plots with balanced dose of chemical fertilizers. Organic carbon was significantly positive correlated with av. Zn & Mn, whereas av. Mn significantly negative correlated with pH. Other relationship were found to be non significant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372526
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  • 8
    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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  • 9
    Electronic Resource
    Electronic Resource
    Transformation of iron and manganese in rice soils under different moisture regimes and organic matter applications (1982)
    Springer
    Plant and soil 69 (1982), S. 45-56 
    Details
    ISSN: 1573-5036
    Keywords: Iron ; Manganese ; Moisture ; Organic matter ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Transformation of iron and manganese under three different moisture regimes,viz continuous waterlogged (W1), continuous saturated (W2) and alternate waterlogged and saturated (W3) and three levels of organic matterviz 0, 0.5 and 1.0% in all possible combinations was studied in four soils. The results showed that under waterlogged moisture regime there was a sharp increase in the content of water soluble plus exchangeable manganese accompanied by significant decrease in the content of reducible manganese in all the soils excepting the acidic soil which was very poor in active manganese content. The increase in respect of iron in similar form was, however, very small. The increase in the content of water soluble plus exchangeable manganese as well as iron under the continuous saturated and alternate waterlogged and saturated moisture regimes was always much lower as compared to that under the continuous waterlogged condition. Application of organic matter brought about an increase in the content of water soluble plus exchangeable manganese in all the soils excepting the lateritic one irrespective of moisture regimes but did not cause any change in the content of iron and manganese in insoluble complex. The content of water soluble plus exchangeable iron and of insoluble ferrous iron although recorded some increase due to organic matter application, the increase was not so marked in any of the soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185702
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  • 10
    Electronic Resource
    Electronic Resource
    Release of Fe, Mn and P in a calcareous vertisol and yield of upland rice as influenced by presowing soil water treatments (1982)
    Springer
    Plant and soil 68 (1982), S. 11-18 
    Details
    ISSN: 1573-5036
    Keywords: Iron ; Manganese ; Oryza sativa ; Phosphate ; Rice ; Vertisol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A field experiment was conducted on a calcareous vertisol at Mahatma Phule Agricultural University, Rahuri to study the release of Fe, Mn and P in soil and yield of two rice cultivars due to different soil water treatments for 15 days prior to sowing. Soil saturation (daily two irrigations) for 15 days prior to sowing increased the supply of Fe, Mn and P in soil at sowing as a result of reduction in pH and Eh. Dry matter yield at different growth stages as well as grain yields of Karjat 184 (dwarf) and Tuljapur 1 (tall) also increased due to presowing soil saturation treatment. Tuljapur 1 yielded more than Karjat 184 when grown under upland conditions. Laboratory incubation studies showed reduction in soil pH (from 8.6 to 7.5) and Eh (from +501 to +362 mv) at the end of 15 days under soil submergence treatment. Availability of Fe, Mn and P was also found to be increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374723
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