Articles
THE CONTENT OF INORGANIC NITROGEN IN SOILS OF ORCHARDS IN DIFFERENT PLANTATION AREAS
Article number
274_42
Pages
339 – 346
Language
Abstract
A version of the Nmin-method so far used in agriculture has been applied to deciduous fruit tree orchards.
The usefulness of this method is discussed on the basis of measured contents of inorganic nitrogen in soils of different plantation areas.
The investigated factors (year; nitrogen application differing in amount and date; soil management carried out as overall herbicide usage or herbicide strips with grassed alleys; sampling site) have proved less important for light soils and comparatively more important for medium and heavy soils.
The obtained results reveal that the background of usual nitrogen fertilizer recommendations should be revised.
Referring to this an advanced approach for valuating the content of inorganic nitrogen of orchards is proposed.
The usefulness of this method is discussed on the basis of measured contents of inorganic nitrogen in soils of different plantation areas.
The investigated factors (year; nitrogen application differing in amount and date; soil management carried out as overall herbicide usage or herbicide strips with grassed alleys; sampling site) have proved less important for light soils and comparatively more important for medium and heavy soils.
The obtained results reveal that the background of usual nitrogen fertilizer recommendations should be revised.
Referring to this an advanced approach for valuating the content of inorganic nitrogen of orchards is proposed.
Authors
D. Näfe, K. Lerche, G. Schönberg
Keywords
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