Flow and chemical composition of drainage water from farmland in the Belgian loamy region. Part 2. Patterns of irons leaching with particular reference to nitrate

Auteur :
BOCKEN, P.

Description :
The nitrate quality limit of 50 mg NO3/l could be exceeded in the autumn, winter or spring, depending on the soil mineral nitrogen content and rainfall. Nitrogen leaching losses were related to rainfall distribution and agricultural practices. They were lower for land under cereals than under sugar-beets. When the available nitrogen for leaching was high, nitrate and chloride were not leached together. At this moment, the NO3 concentration was positively related with the flowrate and the Ca content, but negatively with the Cl content. Relation between flow and nitrate concentration is discussed in terms of possible water flow, piston flow or macropores flow. - (L'A.).


Type de document :
Article de périodique

Source :
Pédologie (Gent), issn : 0079-0419, 1987, vol. 37, p. 117-136, Références bibliographiques : 28 réf.

Date :
1987

Editeur :
Pays édition : Belgique, Gent, Société belge de pédologie