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  • Articles  (18)
  • Articles: DFG German National Licenses  (18)
  • Zinc  (18)
  • 1985-1989
  • 1980-1984  (18)
  • 1925-1929
  • 1983  (10)
  • 1981  (8)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
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  • Articles  (18)
Source
  • Articles: DFG German National Licenses  (18)
Keywords
Publisher
Years
  • 1985-1989
  • 1980-1984  (18)
  • 1925-1929
Year
Topic
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (18)
  • Biology  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Effect of nitrogen and zinc on the yield of submerged rice and uptake of N and Zn on unlimed and limed soils (1981)
    Springer
    Plant and soil 62 (1981), S. 183-192 
    Details
    ISSN: 1573-5036
    Keywords: Liming ; Nitrogen ; Rice ; Submerged rice ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effect of N and Zn on the yield of submerged rice and uptake of N and Zn was studied on limed and unlimed soils in greenhouse. Nitrogen was applied at the rate of 0,80 and 160 ppm through urea, ammonium sulphate and ammonium nitrate, Zn at 0 and 10 ppm in limed (4% CaCO3) and unlimed soils. Liming (4% CaCO3) decreased dry matter yield of rice at tillering, heading and straw and grain at maturity significantly against unlimed treatments. Ammonium sulphate gave highest yield with all applied doses followed by ammonium nitrate and urea. Zinc at 10 ppm increased dry matter and grain yield significantly over no Zn treatment in rice. The N sources gave N concentration and uptake in rice plants in decreasing order: $$Ammonium sulphate 〉 Ammonium nitrate 〉 Urea.$$ The highest N concentration was recorded with 160 ppm followed by 80 ppm N through any source and lowest in control. The application of Zn increased and liming decreased N concentration and uptake by rice at all sampling stages. Highest N concentration (2.37 to 3.92%) was observed at tillering followed at heading (0.48 to 1.05%). At maturity N in grain ranged from 0.69 to 1.13% whereas in straw from 0.24 to 0.41%. There were positive significant interactions of N(S) x N(L), N(S) and N(L) x Zn and negative interaction with lime on yield, N concentration (%) and N uptake (mg/pot). The application of N sources and levels and Zn increased Zn uptake (μg/pot), and liming decreased it. But 160 ppm N through any source decreased straw Zn concentration over 80 ppm N in absence of added Zn, however, effects on grain were not so strong particularly that of 160 ppm, when 10 ppm Zn was also added even 160 ppm N increased Zn concentration over 80 ppm significantly in both straw and grain. In this case the effect of N sources on Zn concentration was in the order: $$Ammonium sulphate 〉 Urea 〉 Ammonium nitrate.$$
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374083
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of zinc, phosphorus and nitrogen on tryptophan concentration in rice grains grown on limed and unlimed soils (1981)
    Springer
    Plant and soil 62 (1981), S. 305-308 
    Details
    ISSN: 1573-5036
    Keywords: Liming ; Nitrogen ; Phosphorus ; Rice ; Tryptophan ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of Zn, P, N and CaCO3 on tryptophan concentration in rice grain were studied in greenhouse at Haryana Agricultural University. Zinc application upto 20 ppm increased tryptophan concentration in rice grain. Zn-EDTA gave highest increase followed by ZnSO4 and then ZnO. Liming at the rate of 4 and 8 per cent decreased tryptophan concentration significantly. Phosphorus application upto 100 ppm also decreased tryptophan significantly but Zn in combination with P increased tryptophan and overcame negative effect of P. Nitrogen application upto 120 ppm increased tryptophan concentration. There was positive interaction between Zn and N. Ammonium sulphate gave highest tryptophan followed by ammonium nitrate and then urea. The tryptophan concentration ranged between 766 ppm and 2011 ppm in paddy grain. The lowest tryptophan concentration was in the plants treated with 8 per cent lime in absence of added Zn and highest with 10 ppm Zn through Zn-EDTA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374094
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  • 3
    Electronic Resource
    Electronic Resource
    Boron, copper, iron, manganese and zinc contents in leaves of flowering sunflower plants (Helianthus annuus, L.), grown with different boron supplies (1981)
    Springer
    Plant and soil 62 (1981), S. 461-464 
    Details
    ISSN: 1573-5036
    Keywords: Boron ; Copper ; Iron ; Manganese ; Zinc ; Microelements ; Sunflower
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Boron, copper, iron, manganese and zinc concentrations were measured in sunflower leaves from plants grown hydroponically in a closed continuous flow system and with boron concentrations ranging from deficient to toxic. Leaves were analyzed at the stage of flower development. There was a highly significant inverse correlation between B concentration in solution and Mn concentration in leaves. Cu, Fe and Zn concentrations in the leaves were not changed by the different B levels, although the B concentration in leaves increased with an increasing concentration in solution, showing a close correlation each other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374142
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  • 4
    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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  • 5
    Electronic Resource
    Electronic Resource
    Evaluation of chemical methods for estimating available zinc and response of green gram (Phaseolus aureus roxb) to applied zinc in non-calcareous soils (1981)
    Springer
    Plant and soil 63 (1981), S. 477-484 
    Details
    ISSN: 1573-5036
    Keywords: Available zinc ; Critical levels ; Chemical methods ; Green gram ; Phaseolus aureus ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Studies were conducted in 22 non-calcareous soils (India) to evaluate various extractants,viz. (6N HCl, 0.1N HCl, EDTA (NH4)2CO3, EDTA NH4OAc, DTPA+CaCl2 and 1M MgCl2) to find critical levels of soil and plant Zn for green gram (Phaseolus aureus Roxb.). The order of extractability by the different extractants was 6N HCl〉0.1N HCl〉EDTA (NH4)2CO3〈EDTA NH4OAc DTPA+CaCl2〉1M MgCl2. Critical levels of 0.48 ppm DTPA × CaCl2 extractable Zn, 0.80 ppm EDTA NH4OAc extractable Zn, 0.70 ppm EDTA (NH4)2CO3 extractable Zn, and 2.2 ppm 0.1N HCl extractable Zn were estimated for the soils tested. The critical Zn concentration in 6 weeks old plants was found to be 19 ppm. The 0.1N HCl method gave the best correlation (r=0.588**) between extractable Zn and Bray's per cent yield, while with DTPA+CaCl2, it was slightly low (r=0.542**). The DTPA + CaCl2 method gave significant (r=0.73**) correlation with plant Zn concentration. The 0.1N HCl gave the higher correlation with Zn uptake (r=0.661**) than DTPA (r=0.634**) 6N HCl and 1M MgCl2 method gave nonsignificant positive relationship with Bray's per cent yield. For noncalcareous soils apart from the common use of DTPA+CaCl2, 0.1N HCl can also be used for predicting soil available Zn. The use of 0.1N HCl would be much cheaper than DTPA and other extractants used in the study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370047
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of a soil fulvic acid on the growth and nutrient content of cucumber (Cucumis sativus) plants (1981)
    Springer
    Plant and soil 63 (1981), S. 491-495 
    Details
    ISSN: 1573-5036
    Keywords: Calcium ; Copper ; Flowers ; Iron ; Leaves ; Magnesium ; Nitrogen ; Nutrient uptake ; Phosphorus ; Potassium ; Koots ; Shoots ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Cucumber (Cucumis sativus) plants were grown in Hoagland solution to which 20 to 2000 ppm of a soil fulvic acid (FA) were added. The addition of 100 to 300 ppm of FA produced highly significant increases in the growth and development of above and below ground plant parts, in the uptake of nutrient elements (N, P, K, Ca, Mg, Cu, Fe and Zn), and in the formation of numbers of flowers per plant. Effects of adding 500 and more ppm of FA were less beneficial.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370049
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  • 7
    Electronic Resource
    Electronic Resource
    In situ immobilization of heavy metals with tetraethylenepentamine (tetren) in natural soils and its effect on toxicity and plant growth (1983)
    Springer
    Plant and soil 70 (1983), S. 37-47 
    Details
    ISSN: 1573-5036
    Keywords: Cadmium ; Cation exchange ; Copper ; Heavy metals ; Illite clay ; Nickel ; Organic matter ; Tetraethylenepentamine ; Tetren ; Transition metal complexes ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The ion exchange behavior of heavy metals (Cu, Zn, Ni, Cd) in soils is shown to be strongly influenced by complex formation with tetraethylenepentamine (tetren). In a heavy clay (illite) soil, the metal (complex) concentration in the equilibrium solution is lowered by some two orders of magnitude, as compared to the aqueous metal ions. In a sandy loam, in which the exchange properties are nearly exclusively due to organic matter, the addition of tetren leads to a significant increase of the metal (complex) in solution. These effects are interpreted in terms of the high adsorption selectivity of the metal complexes for clay particles (illite clay) and the competition of tetren with the chelating groups of the humic fraction (sandy loam). In this case the resulting tetren complexes remain in solution and can be immobilized by addition of small amounts of clay to such a soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374748
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  • 8
    Electronic Resource
    Electronic Resource
    Soil moisture influence on micronutrient cation availability under aerobic conditions (1983)
    Springer
    Plant and soil 72 (1983), S. 77-83 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Gezira soils ; Iron ; Micronutrient availability ; Microbial activity ; Manganese ; Oxidation ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The three major soil series comprising the Gezira scheme (Sudan) are Hosh, Suleimi, and Laota. Surface soil samples from each soil series were employed to study the effect of soil moisture on the DTPA-extractable micronutrient cation under aerobic conditions. The study continued for 8 weeks using an incubation technique at two levels of soil moisture (continuously moist and moist/dry cycles). The DTPA-extractable Cu, Fe, Mn and Zn from air-dry soil samples were much higher compared to values from their incubated counterparts. For the three soils the CO2 production (microbial activity) reached the maximum in 5 weeks and then levelled off while the lowest values of micronutrient cation from the incubated soils were obtained between 2 to 8 weeks. Generally, the study suggests that the hot dry months preceding crop growth should increase clay surface acidity and hence availability of mironutrient cations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185096
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  • 9
    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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  • 10
    Electronic Resource
    Electronic Resource
    Cu and Zn in soils treated with sewage sludge: Their ‘extractability’ to reagents compared with their ‘availability’ to plants (1983)
    Springer
    Plant and soil 70 (1983), S. 3-14 
    Details
    ISSN: 1573-5036
    Keywords: Availability ; Copper ; Extractability ; Sewage sludge ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Dried digested sewage sludge (cake) was mixed, in varied proportions, with three contrasting soils and cropped intermittently to ryegrass or young barley over a period of 710 days. Results are presented for periods 1–4, 13–16 and 22–23 months after the sludge and soil were mixed. At any given time the quantities of Cu or Zn that wereextractable (by EDTA or acetic acid) from a given soil showed a simple relationship to the ‘total’ quantities of Cu and Zn present. Theavailability of these elements to test crops also showed a simple relationship to their ‘total’ quantities. As a result the quantities available or extractable at any given time appeared to be related to each other also. However, though the extractabilities of Cu and Zn changed with time in some cases, and the availabilities of Cu and Zn changed with time in some cases, the changes were not matched. Increased extractability did not necessarily lead to increased uptake, and in some cases uptake increased even when extractability did not. It should not be assumed too readily therefore that because, at a given time after a soil is sludged, the quantities of added Cu and Zn that are extractable or available are sometimes correlated, the former actually measures the latter.There is no reason to assume that extractants remove all or only the forms of combination of Cu or Zn that may be taken up by crops.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374745
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  • 11
    Electronic Resource
    Electronic Resource
    In situ immobilization of heavy metals with tetraethylenepentamine (tetren) in natural soils and its effect on toxicity and plant growth (1983)
    Springer
    Plant and soil 70 (1983), S. 49-57 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Copper complex ; Corn ; Heavy metals ; Nutrient solutions ; Tetraethylenepentamine ; Tetren ; Zea mays L ; Zinc ; Zinc complex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Complex formation of copper with tetraethylenepentamine (tetren) has some pronounced effects on the rate of uptake of the metal in corn, grown on nutrient solutions. At normal copper levels (0.02 ppm) in the medium, complex formation leads to a nearly hundredfold decrease in the rate of uptake, growth rate being slightly improved. Similar effects are observed at high copper levels (0.05 and 1 ppm) in which case the growth rate, severely affected in the absence of tetren, can be restored to normal values. High excess of tetren in the medium leads to copper-deficiency. Evidence is presented that the metal is taken up and translocated to the shoot as a metal complex and that its rate of translocation through the xylem is higher than for the aqueous ion. The effects in the case of zinc are similar although somewhat less marked.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374749
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  • 12
    Electronic Resource
    Electronic Resource
    Plant genotype differences in the uptake, translocation, accumulation, and use of mineral elements required for plant growth (1983)
    Springer
    Plant and soil 72 (1983), S. 175-196 
    Details
    ISSN: 1573-5036
    Keywords: Boron ; Calcium ; Copper ; Genotypic differences ; Iron ; Magnesium ; Manganese ; Mineral nutrition ; Molybdenum ; Nitrogen ; Phosphorus ; Plant adaptation ; Plant breeding ; Potassium ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Plant genotypes differ in their uptake, translocation, accumulation, and use of mineral elements. Examples of genotype differences to iron, nitrogen, phosphorus, potassium, calcium, magnesium, manganese, boron, copper, zinc, and molybdenum are discussed. Current knowledge is sufficient to indicate that many crop plants can be improved for the efficient use of mineral elements and better adaptation to mineral stress conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181957
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  • 13
    Electronic Resource
    Electronic Resource
    Nutrient inflows into apple roots (1983)
    Springer
    Plant and soil 71 (1983), S. 371-380 
    Details
    ISSN: 1573-5036
    Keywords: Apple ; Calcium ; Copper ; Iron ; Irradiance ; Magnesium ; Manganese ; Nitrogen ; Nutrient uptake rate ; Phosphorus ; Potassium ; Scion effects ; Season ; Source of nitrogen ; Temperature ; Tissue nutrient level ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The rates of uptake of nutrients from solution by apple roots were measured (a) in a root laboratory, using intact roots of mature trees growing under field conditions and (b) in controlled environment using young trees. Maximum nitrate inflows into Discovery/M.9 roots under field conditions were only slightly lower than those into roots of the same genotype in controlled environment, but up to 80 times lower than those into roots of Worcester Pearmain seedlings. At any given external P concentration, P inflows into roots of field-grown trees were about 2.5-times lower than those into the roots of young trees in controlled environment. Nitrate inflows were constant above a solution concentration of 20 mmol m−3 in both field-grown and small trees. In both cases, phosphate inflows increased linearly with solution concentration up to 10 mmol m−3. Among the various plant and environmental factors influencing nutrient uptake characteristics of apple roots were: the scion genotype, tissue nutrient levels, root origin, the form in which N is supplied, level of irradiance of the shoot, root temperature and the season of the year. The effects of these factors are illustrated with examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182678
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  • 14
    Electronic Resource
    Electronic Resource
    Chemical transformation and plant availability of zinc salts added to organic manure (1983)
    Springer
    Plant and soil 73 (1983), S. 337-344 
    Details
    ISSN: 1573-5036
    Keywords: Availability ; Maize ; Manure ; Slurry ; Transformation ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Assuming that their efficiency might possibly be improved by natural complex formation, inorganic Zn salts were mixed into organic manures before decomposition. These mixtures were allowed to decompose aerobically and anaerobically, to produce Zn-enriched manures and slurries, for 75 and 50 days, respectively. Fractionation of Zn in the final product revealed that the water-solubility of ZnSO4 decreased and that of ZnO increased on mixing the compounds with organic matter. Most of the added Zn remained in exchangeable form and the amount of chelated Zn increased with the time of decomposition. Plant availability of Zn from Zn-enriched manure was less and from Zn-enriched slurry was more than that of equal amounts of ZnSO4. Available soil Zn was also higher in soils treated with Zn-enriched slurry than with any other material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184310
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  • 15
    Electronic Resource
    Electronic Resource
    Uptake of heavy metals by crops in relation to their concentration in the soil solution (1983)
    Springer
    Plant and soil 75 (1983), S. 393-404 
    Details
    ISSN: 1573-5036
    Keywords: Cadmium ; Copper ; Heavy metals ; Lead ; Pollution ; Soil solution ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Of 20 Dutch soils, concentrations in the soil solution and total contents of Zn, Cd, Pb and Cu were determined. In addition, distribution constants were measured for Cd and Pb. Soil solution concentrations of the heavy metals as well as their total contents in the soil and exchangeable fraction, calculated with the distribution coefficients, were compared with uptake in vegetables grown in pots. Log-log plots of concentrations in the plant and the soil solution concentrations showed the best correlation for Cu, Cd and Zn. Increasing Zn appeared to increase Cd uptake at high solution concentrations of Cd and to decrease uptake at low solution concentrations. For Pb generally no significant relationship between plant uptake and soil solution concentration or any other soil parameter for Pb could be found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02369973
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  • 16
    Electronic Resource
    Electronic Resource
    Total concentrations of Mn, Zn and Cu in certain forest soils in Greece (1983)
    Springer
    Plant and soil 74 (1983), S. 137-140 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Forest soils ; Greece ; Manganese ; Total concentrations ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Total concentrations of Mn, Zn and Cu were determined in soil samples from 144 profiles located in remote forested areas throughout the mainland of Greece. Bio-accumulation of Mn and Zn in the humic horizon took place only in moderately acid soils (pH 5–6). Mean concentrations of Mn, Zn and Cu, in the mineral section of the soil profiles, were 1383, 93, and 51 ppm, respectively. Soils from hard limestone and basic and ultrabasic igneous rock contain these three minor elements at significantly higher concentrations compared to soils from the rest of the soil parent materials. In most of the soil profiles concentration of Cu increased, and of Mn decreased, with soil depth. Concentrations of Mn, Zn and Cu in the underlaying “rocks” were within the range of their average concentrations found in the mineral soil, except for hard limestone where much lower concentrations of these elements have been found. The latter supports the theory that the parent material of soils associated with limestones might not be a solution product of the limestone rock.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02178750
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  • 17
    Electronic Resource
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    Influence of phosphorus and zinc fertilizers on the uptake of P and Zn by corn plants grown in highly calcareous soils (1981)
    Springer
    Plant and soil 59 (1981), S. 227-236 
    Details
    ISSN: 1573-5036
    Keywords: Availability ; Corn ; Extractability ; Heavy application ; Immobilization ; Phosphorus ; Plant parts ; Translocation ; Uptake ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The influence of heavy applications of P (100, 200 and 400 ppm P) and Zn (12.5 and 25 ppm) fertilizers on their extractabilities, availabilities and uptake by corn grown in highly calcareous soil was investigated. A significant increase was found in the levels of (NH4)2CO3-EDTA-extractable Zn either by Zn-applications alone or together with P. The amounts of NaHCO3-extractable P were also increased with P additions and the influence of Zn applications was not clear. Phosphorus application generally increased the plant dry weight. In the soils treated with P and Zn fertilizers, that increase was mostly related to P rather to Zn. In the soils not treated with Zn, P additions increased Zn uptake by the plants. On the other side, in the soils treated with Zn, P additions decreased Zn uptake. Phosphorus concentration in the whole plant and/or in the different plant parts was increased by P application without being significantly affected by Zn addition. The plants showed greater response to 12.5 ppm Zn application than to 25 ppm. Plants grown for 4 weeks contained lower amounts of Zn relative to those grown for 8 weeks. The influence of plant age on P content was not as clear as occurred with Zn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184196
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  • 18
    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. 327-333 
    Details
    ISSN: 1573-5036
    Keywords: Acid soil ; Complexed metals ; Copper ; Iron oxides ; Lime ; Manganese oxides ; Organic matter ; Redistribution ; Trace metals ; Waterlogging ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The redistribution of zinc and copper in a soil as a result of waterlogging has been studied using selective extractants to remove metals held by specific mechanisms. Waterlogging over a period of 16 weeks resulted in a lowering of soluble, exchangeable and organically bound zinc and copper. There is a concomitant increase in the levels of these metals held by specific adsorption (acetic acid extractable) and by poorly ordered oxides (oxalate extractable). It is suggested that the breakdown of these oxides of iron and manganese, which is brought about by waterlogging, provides surfaces with high adsorptive capacity for zinc and copper. Addition of 1% dried grass or 1% lime to the soil caused an acceleration in metal redistribution. Some of the copper released was retained in the standing water, presumably as a soluble chelate. This was not the case with zinc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184204
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