Articles
NMIN TARGET VALUES FOR FIELD VEGETABLES
Article number
571_23
Pages
195 – 201
Language
English
Abstract
The use of Nmin target values for predicting the nitrogen (N) fertilizer demands of vegetable crops is common practice in several European countries.
However, Nmin target values, which in the past were derived mainly from fertilizer experiments, have not been determined for all commercially important crops.
To solve this problem, this paper presents an algorithm and an up-to-data data set for calculating Nmin target values from: (1) the expected N uptake by the crop, (2) the necessary Nmin residue in the soil at harvest, and (3) the apparent net N mineralization.
However, Nmin target values, which in the past were derived mainly from fertilizer experiments, have not been determined for all commercially important crops.
To solve this problem, this paper presents an algorithm and an up-to-data data set for calculating Nmin target values from: (1) the expected N uptake by the crop, (2) the necessary Nmin residue in the soil at harvest, and (3) the apparent net N mineralization.
Authors
C. Feller, M. Fink
Keywords
nitrogen, fertilization, mineralization, decision support
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