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  • 1
    Electronic Resource
    Electronic Resource
    Removal of Plutonium-239, Tungsten-185 and Lead-210 from Soils (1966)
    [s.l.] : Nature Publishing Group
    Nature 209 (1966), S. 941-942 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Previous experiments in this laboratory1 and findings of others2 indicated that only small amounts of 239Pu were translocated from the soil to the plant foliage (leaf-soil ratios ~ 0.0001). Data were generally variable because of the low counting rates. The results were technically improved in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/209941a0
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of some heavy metals on the cobalt nutrition ofRhizobium meliloti (1970)
    Springer
    Plant and soil 32 (1970), S. 81-89 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The growth ofRhizobium meliloti in a complete nutrient solution was studied at Co concentrations ranging from inadequate to adequate in the presence of another heavy metal added at different concentrations. Nickel and Cu supplied at 1µM inhibited growth at low Co concentrations but not when Co was raised to 10nM (10×10−9 M). With Cu, lowering the initial pH of the culture solution from 7.0 to 6.6 greatly increased the magnitude of the growth reduction. Zn at 100 µM reduced growth greatly even at high levels of Co (10 nM). Neither Cr (up to 10 µM) nor Mn (up to 100 µM) caused any significant growth reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372848
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  • 3
    Electronic Resource
    Electronic Resource
    Evaluation of chemical seed coat sterilants (1976)
    Springer
    Plant and soil 44 (1976), S. 703-707 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Three seed coat sterilants were evaluated for effectiveness as surface sterilants and for effects on seed germination. Several exposure times in sodium hypochlorite, hydrogen peroxide and peracetic acid were evaluated. Seeds of the following crop plants were used: wheat (Triticum aestivum L.); sorghum [Sorghum bicolor (L.) Moench]; soybean [Glycine max (L.) Merrill]. All treatments reduced germination of wheat and soybean seed, but only the most severe peracetic acid treatments substantially reduced germination of sorghum seed. Considering both sterilization effectiveness and seed germination, a treatment with 5% sodium hypochlorite for 45 min appeared to be the most satisfactory of the treatments used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011388
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of washing on elemental analysis of leaves of fieldgrown crop plants (1985)
    Springer
    Plant and soil 88 (1985), S. 93-100 
    Details
    ISSN: 1573-5036
    Keywords: Aluminum ; Calcium ; Copper ; Glycine max ; Iron ; Magnesium ; Manganese ; Nitrogen ; Phosphorus ; Potassium ; Sorghum bicolor ; Triticum aestivum ; Zea Mays ; Zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Information is limited on soil contamination of leaves from field-grown row crops, especially with respect to aluminum (Al) analyses. The objective of this study was to determine the influence of washing leaf samples with either deionized water or detergent solution on elemental analyses for several agronomic crop plants. The crop plants sampled were corn (Zea mays L.), soybean (Glycine max L. Merr.), grain sorghum (Sorghum bicolor L. Moench), and wheat (Triticum aestivum L.). The crops were grown on a range of soil types, soil pH values, and tillage practices. Samples of upper leaves and lower leaves were collected separately. The samples were either not washed, washed with deionized water, or washed with detergent solution. After drying, grinding, and digesting, the samples were analyzed for Al, nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), and copper (Cu). For all crop plants and conditions studied, there was no effect on measured N, P, K, Ca, Mg, Mn, Zn, or Cu concentrations, but measured Al and Fe concentrations were influenced by washing. In general, washing had a greater effect on Al analyses than on Fe analyses. Soybean samples were most affected by washing, while wheat samples seemed to be least affected. The results reflected greater contamination of lower leaves than upper leaves. Decontamination procedures appear necessary prior to Al and Fe analyses of field-grown crop plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02140668
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  • 5
    Electronic Resource
    Electronic Resource
    Differential plant response to inoculation with two VA mycorrhizal fungi isolated from a low-pH soil (1988)
    Springer
    Plant and soil 110 (1988), S. 69-75 
    Details
    ISSN: 1573-5036
    Keywords: Acaulospora laevis ; Gigaspora margarita ; host-endophyte interactions ; Ladino clover ; mycorrhizal infection ; P nutrition ; sericea lespedeza
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Sericea lespedaza and ladino clover were inoculated withAcaulospora laevis andGigaspora margarita VA mycorrhizal fungi, both isolated from a local soil having a pH of 4.4. Plants were grown in a greenhouse in fumigated (methyl bromide) soil with four rates of applied P. This soil had a pH of 5.1 for theG. margarita experiment and a 5.8 for theA. laevis experiment. Neither plant species responded to theG. margarita isolate in terms of mycorrhizal infection of roots, top growth, or elemental uptake. TheA. laevis isolate caused increased growth of Ladino clover at the lowest rate of P application and increased growth of sericea lespedeza at the two lowest P application rates. Shoot tissue concentrations of P for both plant species were greater at the two lowest rates of P application when inoculated withA. laevis. Inoculation withA. laevis also resulted in different VAM fungal root colonization patterns between the two plant species as a function of P application rate. Roots of both plants had high infection rates (near 70%) for the two lowest P application rates but sericea lespedeza declined to 40 and 6% at the next two P application rates, respectively, whereas infection in Ladino clover was 74 and 41% at the next two P application rates, respectively. The results of this study support the concept that plant host-VAM fungal endophyte interactions are extremely variable and that characterization of individual combinations must be done if types and magnitudes of responses are to be defined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143541
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of added manganese on nitrification in a low-manganese soil (1977)
    Springer
    Plant and soil 46 (1977), S. 687-690 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Nitrification was studied in a Leefield sand, sufficiently low in Mn to produce severe Mn deficiency in soybeans. The soil was treated with 100 μg/g NH4 +-N, 0, 10, 100 and 1000 μg/g Mn, and incubated at field capacity for six weeks at 30°C. Weekly determinations of (NO3 -+NO2 -)-N and NH4 +-N revealed that nitrification was not increased above the control level by any of the Mn rates. In the control, the decrease in soil pH associated with nitrification caused an increase in extractable Mn from 0.12 to 1.56 μg/g during the experimental period. The 1000 μg/g rate of Mn completely inhibited nitrification for the first five weeks of the experiment, but nitrification began to occur during the sixth (last) week. It is postulated that Mn was being converted to unavailable forms such that by the sixth week the level of active Mn had been reduced sufficiently to permit nitrification to begin. re]19760512
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00015932
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of some heavy metals on the cobalt nutrition ofRhizobium meliloti (1970)
    Springer
    Plant and soil 32 (1970), S. 81-89 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The growth ofRhizobium meliloti in a complete nutrient solution was studied at Co concentrations ranging from inadequate to adequate in the presence of another heavy metal added at different concentrations. Nickel and Cu supplied at 1µM inhibited growth at low Co concentrations but not when Co was raised to 10nM (10×10−9 M). With Cu, lowering the initial pH of the culture solution from 7.0 to 6.6 greatly increased the magnitude of the growth reduction. Zn at 100 µM reduced growth greatly even at high levels of Co (10 nM). Neither Cr (up to 10 µM) nor Mn (up to 100 µM) caused any significant growth reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01372848
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  • 8
    Electronic Resource
    Electronic Resource
    Cobalt requirement of symbiotically grown alfalfa (1963)
    Springer
    Plant and soil 19 (1963), S. 364-373 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Alfalfa was grown in purified culture solutions to which different amounts of radioactive Co were added. Treatment effects were evaluated by measuring the yield, N and Co content of the plant tops; and the weight, volume and leghemoglobin content of the root nodules. The Co requirement of symbiotic N fixation was met with 10 ppt of the element in the rooting medium; this amount gave plants containing 0.0005 ppm of Co in their whole tops and 0.0008 ppm of Co in their leaves. Leghemoglobin was found in measurable amounts only in nodules which were fixing N at the time of harvest. The level of added Co had no effect on the weight or volume of root nodules formed, nor were the Co levels supplied related to the leghemoglobin content of the nodules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379489
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  • 9
    Electronic Resource
    Electronic Resource
    Testing aluminum-chelate equilibria models using sorghum root growth as a bioassay for aluminum (1991)
    Springer
    Water, air & soil pollution 57-58 (1991), S. 149-158 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Aluminum toxicity is an important limitation to crop yields in the acid soils of southeastern U. S. and other parts of the world due to its detrimental effects on roots. Soluble organics in soil solution ameliorate Al toxicity, a phenomenon which can be studied employing synthetic chelates. Theoretical models predict that Al will be complexed on nearly a one to one molar basis by nitrilotriacetic acid (NTA) at toxic pH levels found in acid soils (4.0 to 4.5). A series of growth chamber experiments were conducted with NTA at various Al and pH levels to test equilibrium models using sorghum [Sorghum bicolor (L.) Moench] as a bioassay for the uncomplexed Al. At pH 3.5 neither Al nor NTA affected root growth which was very poor, probably because of H+ toxicity. At pH 4.0 and 4.5 root growth was reduced by Al levels, and NTA ameliorated toxicity as predicted by the theoretical model. Root length was reduced at pH 4.0 relative to pH 4.5 indicating that H+ ion was toxic at pH 4.0. The bioassay method was successful in confirming the model for Al-chelate equilibria for NTA. Differential pulse polarography was found to be sensitive to the uncomplexed Al and may have potential in determining toxic Al in soil solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282878
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  • 10
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    Manganese Effects on Yield and Nutrient Concentration in Leaves and Seed of Soybean Cultivars 1 (1981)
    Wiley
    Details
    Publication Date: 1981-07-01
    Print ISSN: 0002-1962
    Electronic ISSN: 1435-0645
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
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