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Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment

Jan HABERLE
Martin Káš

Puni tekst: engleski, PDF (564 KB) str. 0-0 preuzimanja: 321* citiraj
APA 6th Edition
HABERLE, J. i Káš, M. (2012). Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment. Journal of Central European Agriculture, 13 (3), 0-0. Preuzeto s https://hrcak.srce.hr/86511
MLA 8th Edition
HABERLE, Jan i Martin Káš. "Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment." Journal of Central European Agriculture, vol. 13, br. 3, 2012, str. 0-0. https://hrcak.srce.hr/86511. Citirano 17.10.2021.
Chicago 17th Edition
HABERLE, Jan i Martin Káš. "Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment." Journal of Central European Agriculture 13, br. 3 (2012): 0-0. https://hrcak.srce.hr/86511
Harvard
HABERLE, J., i Káš, M. (2012). 'Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment', Journal of Central European Agriculture, 13(3), str. 0-0. Preuzeto s: https://hrcak.srce.hr/86511 (Datum pristupa: 17.10.2021.)
Vancouver
HABERLE J, Káš M. Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment. Journal of Central European Agriculture [Internet]. 2012 [pristupljeno 17.10.2021.];13(3):0-0. Dostupno na: https://hrcak.srce.hr/86511
IEEE
J. HABERLE i M. Káš, "Simulation of nitrogen leaching and nitrate concentration in a long-term field experiment", Journal of Central European Agriculture, vol.13, br. 3, str. 0-0, 2012. [Online]. Dostupno na: https://hrcak.srce.hr/86511. [Citirano: 17.10.2021.]

Sažetak
The effects of organic and mineral nitrogen fertilization on nitrogen leaching and nitrate concentration in percolated water were simulated using the CANDY model. In a long-term IOSDV field experiment carried out from 1983 to the present in Lukavec, Czech Republic, increasing nitrogen rates from 0 kg to 200 kg N*ha-1 in mineral fertilizers were combined with the application of farmyard manure or straw, the control treatment was without organic fertilization. The simulation results of four rotations in the years 1996 – 2007 are presented. In the treatments, the average simulated nitrogen leaching ranged from 2 kg to 71 kg N*ha-1 y-1, the average nitrate concentrations were between 5 mg and 191 mg*l-1. The average year concentration of nitrate about 40 mg*l-1 indicated increasing occurrence of concentrations above 50 mg*l-1 at daily basis. Nitrogen leaching and nitrate concentrations were non-linearly related to the total nitrogen inputs (R2= 0.98), the organic fertilizer
treatments only negligibly altered the form of the relationship. The average nitrate concentration exceeded 50 mg*l-1 at a total nitrogen input level about 150 kg N*ha-1; this corresponding to an average leaching of 20 kg N*ha-1 y-1.

Ključne riječi
mineral nitrogen rate; manure; straw; nitrate; leaching; model

Hrčak ID: 86511

URI
https://hrcak.srce.hr/86511

Posjeta: 547 *