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  • 1
    Digitale Medien
    Digitale Medien
    Uptake by corn and chemical extractability of heavy metals from a four year compost treated soil (1989)
    Springer
    Plant and soil 116 (1989), S. 23-27 
    Details
    ISSN: 1573-5036
    Schlagwort(e): compost ; corn ; heavy metals ; soil extractability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract This paper gives the results from four-year field experiments on compost application, added at the maximum rate allowed by Italian legislation (30 t/ha/y). The purpose of the experiment was to evaluate any eventual heavy metal accumulation in soil and corn plants. Cadmium in corn plants increased particularly in the roots from 0.22 mg kg−1 to 1.31 mg kg−1, concentration of Zn and Cu increased in grains, from 26.8 to 35.8 and from 2.4 to 4.2 mg kg−1 respectively. Relevant increase in the roots was detected for Zn from 34.6 to 146.8 mg kg−1. Only in the 4th year Ni concentration increases in the root portion while the content of Pb and Cr in corn was generally unaffected by the compost application. Heavy metals in the soil determined by a sequential chemical extraction, indicated that extractability changed with time. A certain increase was found from the beginning to the end of the experiment particularly for Zn, from 23.3 mg kg−1 to 45.1 mg kg−1 in extractable forms. Nevertheless the extractable amounts are rather small in respect to the total heavy metal content of compost.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02327253
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Variations of soil structure and microbial population in a compost amended soil (1988)
    Springer
    Plant and soil 106 (1988), S. 113-119 
    Details
    ISSN: 1573-5036
    Schlagwort(e): cellulolytic microorganisms ; compost ; field trials ; maize mycorrhizae ; pore-size distribution ; porosity ; soil stability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Changes in soil structure and in microbial population were recorded in a long term field experiment over the growing season of maize (June–November). Determinations were made on samples from plots which had received, for two years, the following treatments: mineral fertilizers, farmyard manure and three rates of compost. Seasonal variations were observed for the stability of soil aggregates, total porosity, pore size distribution, mycorrhizal infection and aerobic cellulolytic microorganisms. The stability of the soil aggregates changed in a similar way to that found for both mycorrhizal infection and the number of aerobic cellulolytic microorganisms. Physical characteristics were not affected in any instance by the organic dressings and microbiological populations were generally influenced only by the higher doses of compost.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02371202
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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