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  • 1
    Electronic Resource
    Electronic Resource
    Effects of lime and nutrient salts on the microbiological activities of forest soils (1991)
    Springer
    Biology and fertility of soils 11 (1991), S. 261-266 
    Details
    ISSN: 1432-0789
    Keywords: Forest soil ; Fertilization ; Enzymes ; Lime ; Amelioration ; Microbial biomass ; Protease activity ; Phosphatase activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In pot experiments, lime and mineral salts were applied to forest soils taken from three different sites. Microbial biomass, basal respiration, N turnover, and the activities of protease, phosphatase, and CM-cellulase were determined monthly. The fertilized soils showed a great increase in biomass, respiration and N turnover, and some increase in protease activity, whereas phosphatase activity decreased in comparison with the untreated soils. Estimates of the number of colony-forming units of different classes of microorganisms showed an increase in treated soils in most cases. The untreated soils had the lowest biological activity but the maximum application of lime and mineral salts did not automatically lead to maximum activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335845
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of compound fertilizer and cupric sulfate on the growth and the bioelement content of cembra pine seedlings (Pinus cembra) (1980)
    Springer
    Plant and soil 57 (1980), S. 257-270 
    Details
    ISSN: 1573-5036
    Keywords: Bioelement content ; Cembra pine seedlings ; Compound fertilizer ; Cupric sulfate ; Nutrient competition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary It was the purpose of this study to investigate the effect of compound fertilization and compound fertilization with cupric sulfate on the growth and the bioelement content of cembra pine seedlings. At the same time microbiological investigations of the soil were carried out under the same conditions. Five months after fertilization the seedlings of the plot treated with compound fertilizer showed lower total weights and lower bioelement contents in their organs than the seedlings in the untreated control plot and in the plot treated with copper. In addition to these results it was found that in the plot treated with compound fertilizer there was an increase in the activity of those microorganisms which are probably nutrient competitors to the cembra pine seedlings whereas the plot treated with cupric sulfate showed a decrease in the activity of these microorganisms. The addition of cupric sulfate caused a partial elimination of this competition because of the toxic properties of the heavy metal and enabled the young cembra pine plants to increase their uptake of nitrogen, phosphorus and other bioelements. In the control plot and in the plot treated with copper beginnings of mycorrhiza were observed. It could not be proved that the results were influenced by weed competition. These observations have contributed to explaining the results of previous experiments which have always shown that fertilizers containing cupric sulfate favour the growth of cembra pine seedlings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02211686
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    Paper (German National Licenses)
    Fulltext
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