Mineral nitrogen content in a soil profile and nitrogen accumulation in winter wheat crop
1997
Haberle, J. | Svoboda, P. | Krejcova, J. (Vyzkumny Ustav Rostlinne Vyroby, Prague-Ruzyne (Czech Republic))
Winter wheat growth, N accumulation in shoots, and the content of mineral N and water in a soil profile were studied in a two year field experiment. It was carried out on a degraded chernozem soil. Two treatments were observed, unfertilized with N (NO) and fertilized with 100 kg.ha-1 (1995) and 85 kg.ha*[-1] (1996) as ammonium nitrate (treatment N1) split-applied at the beginning of vegetative growth in spring and during full tillering. The degree of water and Nmin depletion decreased with the depth of the soil layer. The results suggest that under the given conditions the wheat crop used effectively the supply of N and water from the arable layer and subsoil down to a 70 cm depth.
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