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Conditions genesis and value of recultivated loess soils



Conditions genesis and value of recultivated loess soils



Zeitschrift fuer Pflanzenernaehrung und Bodenkunde 148(2): 131-146



Physical, chemical, microbiological and micromorphological investigations were done on recultivated loess soils deposited between 1963-1968 and under agriculture since then. Dry deposited materials are often strongly compressed at 50-120 cm depth. Wet and dry deposited materials may be compressed at 30-50 cm by tillage. The new soils show already a notable carbonate metabolism, loss of Na and Mg and a certain enrichment of humus and K. Well recultivated soils are forming fertile pararendzina soils, whereas the others are developing into difficult pseudogley soils. Land evaluation gives values of 60-80. Fertility is not as high, and 10-15 should be subtracted from the values. In compressed soils, melioration by deep loosening and drainage is the only method to avoid further degradation.

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Accession: 005032087

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