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  • 1
    Electronic Resource
    Electronic Resource
    Soil solution chemistry of two reclamation sites in the Lusatian lignite mining district as influenced by organic matter application (1999)
    Springer
    Plant and soil 213 (1999), S. 231-240 
    Details
    ISSN: 1573-5036
    Keywords: compost ; fly ash ; lignite ; minesite reclamation ; sewage sludge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Due to a large reclamation (recultivation) demand in the Lusatian lignite mining district, efficient strategies for the rehabilitation of abandoned mine sites are needed. A field study was conducted for comparing the effects of three different fertilizer treatments (mineral fertilizer, sewage sludge and compost) on soil solution chemistry of both a lignite and pyrite containing spoil as well as a lignite and pyrite free spoil. The lignite and pyrite containing spoil was ameliorated with fly ash from a lignite power plant (17–21 t ha−1 CaO), whereas the lignite and pyrite free site received 7.5 t ha−1 CaO in form of limestone. Fertilizer application rates were: mineral fertilizer 120 N, 100 P and 80 K kg ha−1. 19 t ha−1 sewage sludge and 22 t ha−1 compost were applied. Soil solution was sampled in 20, 60 and 130 cm depth for the period of 16 months. Solution was collected every fortnight and analysed for pH, EC, Ca2+, Mg2+, K+, Na+, Fen+, Aln+, Mn2+, Zn2+, NO3 −, NH4 +, SO4 2−, Cl−, PO4 3−, Cinorg and DOC. Lignite and pyrite containing spoil differed clearly from lignite and pyrite free spoil regarding soil solution concentrations and composition. Acidity (H+) produced by pyrite oxidation led to an enhanced weathering of minerals and, therefore, to at least 10 fold higher soil solution concentrations compared to the lignite and pyrite free site. Major ions in solution of the lignite and pyrite containing site were Ca2+, Mg2+, Fen+, Aln+ and SO4 2−, whereas soil solution at the lignite and pyrite free site was dominated by Ca2+, Mg2+ and SO4 2−. At both sites application of mineral fertilizer led to an immediate but short term (about 1 month) increase of NO3 −, NH4 + and K+ concentrations in soil solution down to a depth of 130 cm. Application of sewage sludge caused a long term (about 16 months) increase of NO3 3 − in the topsoil, whereas NO3 − concentrations in the subsoil were significantly lower compared to the mineral fertilizer plot. Compost application resulted in a strong long-term increase of K+ in soil solution, whereas NO3 − concentrations did not increase. Concentrations of PO4 3− in soil solution depend on solution pH and were not correlated with any treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004421501867
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  • 2
    Electronic Resource
    Electronic Resource
    Ground beetle communities on reclaimed mine spoil: Effects of organic matter application and revegetation (1999)
    Springer
    Plant and soil 213 (1999), S. 117-125 
    Details
    ISSN: 1573-5036
    Keywords: amelioration ; compost ; ground beetles ; mine spoil ; revegetation ; sewage sludge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract On a study site in the Lusatian lignite mining region (Germany), sandy mine spoil was ameliorated with either sewage sludge, compost or mineral fertilizer. Plots were sown with the grass Secale multicaule and planted with pine seedlings except for a control that was not meliorated and not revegetated. Pitfall catches of ground beetles in 1996/97 yielded high numbers of species and individuals directly after revegetation. The dominant beetles were xerophilic species, known to prefer open sandy sites. Catches in different plots were positively correlated with the amount of vegetation cover and declined as follows: amelioration with sewage sludge 〉 compost 〉 mineral fertilizer 〉 untreated control. Even beetles characteristic of open sandy sites showed a distinct preference for plots with high vegetation cover treated with organic waste. For the dominant species, an attraction to shelter and a more balanced, humid microclimate is assumed. A year-to-year comparison showed an increase in beetles typical of dry grasslands and ruderal sites in the second year, while characteristic species of open sandy sites decreased. Application of organic waste combined with revegetation led to an immediate increase in beetle numbers. In the long term, revegetation would be expected to reduce suitable habitats for endangered ground beetles which prefer open sites with poor sandy soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004508317091
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  • 3
    Electronic Resource
    Electronic Resource
    Revitalization experiments in magnesium deficient Norway spruce stands in Austria (1995)
    Springer
    Plant and soil 168-169 (1995), S. 489-500 
    Details
    ISSN: 1573-5036
    Keywords: fertilization ; forest decline ; magnesium deficiency ; Norway spruce
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Amelioration of degraded forest ecosystems on acidic substrates showing the new type of forest decline is a major goal of forest management. A number of experiments show positive effects of Mg-application to systems suffering from Mg-deficiencies. The current paper compares experiments conducted in the Austrian part of the Bohemian Massif, where both effects on soil solution chemistry and effects on plant nutrition, vitality and growth were investigated. It turned out that any type of Mg-source is able to improve Mg-nutrition of trees; both a neutral salt like KIESERITE as well as alkaline reacting magnesite and dolomite derived materials. A positive reaction of vitality and growth could however only be induced with dolomitic lime or magnesite. Using mineral NPK fertilizers, even with high Mg-content, induced Mg-deficiencies and led to nutritional imbalances. In addition significant NO3 --leaching occured. On the other hand an organic slow release fertilizer (BACTOSOL*) amended with magnesite derived fertilizers (BIOMAG**) led to balanced nutrition and a fast recovery of tree health status, as judged by crown transparency, vitality index and growth rates. In both cases, when either magnesite derived compounds or combinations with the organic slow release fertilizer were applied, NO3 --leaching occured only during the first three years after fertilization. The leaching rates declined afterwards to values comparable to unfertilized plots, while Mg-content of the soil solution could be elevated compared to the CONTROL, showing the sustainability of proper fertilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00029361
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  • 4
    Electronic Resource
    Electronic Resource
    Relations between damage symptoms and nutritional status of Norway spruce stands (Picea abies Karst.) in southwestern Germany (1991)
    Springer
    Nutrient cycling in agroecosystems 27 (1991), S. 9-22 
    Details
    ISSN: 1573-0867
    Keywords: New type forest damages ; Norway spruce ; southwestern Germany ; nutritional disturbances ; Mg and N fertilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Since the mid-1970s new types of forest damage are observed in the Federal Republic of Germany. Typical damage symptoms in coniferous tree species are needle yellowing, reddening and premature loss of older foliage. Needle analysis carried out in damaged Norway spruce stands indicated that these phenomena, most of all needle yellowing, are influenced by the nutritional status of the trees. For the investigated sites Mg but also other elements, particularly P, S, K, Ca and Zn may play a causal role. As N is the most abundant element in the plant its form of uptake is important for a balanced nutrition. On the contrary to NO3-N high NH4-N uptake reduces the uptake of cations, particularly Mg and Ca, eventually inducing foliar discoloration symptoms on specific sites. Fertilizer experiments indicated that Mg fertilization is an appropriate tool to mitigate forest damages associated with Mg deficiency for a sustained time period. The application of N in the form of NH4-N may impede Mg uptake. This mechanism may cause severe damage in forest areas receiving continuously high NH4-N deposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048604
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