Management of nitrogen fertilization of fresh vegetable crops at field scale in Walloon Region of Belgium


  • Abras, M. , Goffart, J. , Renard, S. & Destain, J. (2010). Management of nitrogen fertilization of fresh vegetable crops at field scale in Walloon Region of Belgium. Proceedings in: Proceedings of the 28th International Horticultural Congress ISHS, Lisbonne (Portugal), 22-27 augustus 2010, 247.
Type Conference Proceedings
Year of conference 2010
Title Management of nitrogen fertilization of fresh vegetable crops at field scale in Walloon Region of Belgium
Conference name Proceedings of the 28th International Horticultural Congress ISHS
Conference location Lisbonne (Portugal)
Recnumber 166
Volume vol 1
Pages 247
conference Date 22-27 augustus 2010
Type of article avec comité d'acceptation
Project/Service ref Légumes frais
Endnote Keywords nitrogen, vegetables, N-recommendation systems, N-needs, N uptake kinetics
Abstract Vegetable crops frequently receive high inputs of organic or mineral N fertilizer leading to quality losses and water pollution. A good management of N fertilization of these crops can both ensure their financial success and appreciably reduce the cause of these problems. Increasing N rates trials have been conducted in loam soil aiming to improve N efficiency of four crops (carrot, escarole, Welsh onion and curled-leaved endive). A provisional balance sheet method at field scale (Azobil software) has been used to give N recommendations and the N-needs fixed a priori for the four crops have been refined: 220 kg Nha-1 for carrots, 110 kg Nha-1 for escarole and curled-leaved endive and 180 kg Nha-1 for Welsh onion. Considering these N-needs and the difficulty to assess the net mineralization, Azobil frequently gave N recommendations close to optimal N rates. The phase of intense N crop uptake was from 60 to 80, 35 to 40, 25 to 35 and 30 to 40 days after sowing or transplanting for carrot, Welsh onion, escarole and curled-leaved endive respectively. This information, combined with N status monitoring of plants could be used to develop new strategies based on split N applications.
Authors Abras, M. , Goffart, J. , Renard, S. & Destain, J.