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  • 1 Szent István University H-2103 Gödöllő, Páter K. u. 1. Hungary
  • 2 Szent István University H-2103 Gödöllő, Páter K. u. 1. Hungary
  • 3 Szent István University H-2103 Gödöllő, Páter K. u. 1. Hungary
  • 4 Szent István University H-2103 Gödöllő, Páter K. u. 1. Hungary
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The effects of nitrogen (N) applications on Hungarian, French and Serbian winter wheat cultivars were studied in field trials conducted from 1996 to 2003 in a central Hungarian region, Hatvan-Nagygombos. Fertilizer rates of 0, 40, 80, 120, 40+40 and 80+40 kg ha-1 active ingredient were applied at tillering and after anthesis (Feekes 3 and Feekes 10.5). The N-fertilizer applied was ammonium-nitrate in 34% cc. Split-split plot design with four replications was used. In the experiment the changes of quantity and baking quality of the yield were analysed. Differences in rainfall during the vegetation period - especially in April and May - had a strong effect on wheat yield. In drought periods N top-dressing had a great importance. In the dry 2001-2003 years, the 80 and 120 kg ha-1 fertilizer doses were the most effective. The increasing dose of N top-dressing and its division resulted in this trial in an outstanding quality improvement in spite of the unfavourable ecological circumstances. Especially, great improvement was seen in case of foreign varieties that were of lower quality compared to the Hungarian ones. The top-dressing stabilized the falling number values in the 250-350 top range.

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