The influence of long-term soil cultivation, fertilization and rotation on the chemical and physical properties and yielding ability of a sandy loam soil. I. Soil chemical and physical properties

Kohn, W.

Bayerisches Landwirtschaftliches Jahrbuch 52(8): 929-955


ISSN/ISBN: 0375-8621
Accession: 000543677

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Fifty-year trials on a sandy soil in a semi-continental climate are reported. Deep ploughing led to higher levels of pH, humus, P2O5 and total N in the 0-16 cm layer, and lower levels in the 17-30 cm layer, compared to shallow ploughing; the distribution of K was not affected. The acidification which developed in the no-lime plots was markedly delayed by the use of deep ploughing. Total pore volume in the 10-14 cm layer was higher with shallow than with deep ploughing, but in the 20-24 cm layer the reverse was true. Liming led to increases in soil humus and N contents, probably by stimulating root production. The availability of lactate-soluble P2O5 and of K was also increased by liming. Liming increased the proportion of water-conducting medium- and fine-sized pores, and thereby increased the water-holding capacity. P2O5 application increased the content of lactate-soluble P2O5 in the soil in both limed and unlimed plots. Farmyard manure increased humus, total-N, P2O5 and K2O contents, as well as pore volume, medium- and fine-sized pores and water-holding capacity. Soil properties have not as yet been markedly affected by cereal monoculture in comparison to rotation.