Impact of the size of nitrogen fertiliser application rate on N2O flux
T. Šima, L. Nozdrovický, K. Krištof, J. Krupičkahttps://doi.org/10.17221/81/2012-RAECitation:Šima T., Nozdrovický L., Krištof K., Krupička J. (2014): Impact of the size of nitrogen fertiliser application rate on N2O flux. Res. Agr. Eng., 60: 24-29.
The application rate of a nitrogen fertiliser is one of the most important factors that affect the nitrous oxide (N2O) flux. Calk ammonium nitrate with 27% nitrogen content was spread by a fertiliser spreader VICON RS-L connected with a tractor Zetor 16145 and incorporated into the soil by a power harrow Pöttinger Lion 301 six hours after spreading. Monitoring points were selected based on the size of application rate 0, 100, 200 and 300 kg/ha and were measured 7, 14, 21 and 28 days after fertiliser application and incorporation into the soil. Nitrous oxide emissions were measured by a photoacoustic field gas monitor INNOVA 1412 with a multipoint sampler INNOVA 1309. Based on the data obtained, there were found statistically significant differences among time intervals and among the size of the application rate at a 95.0% confidence level. Results have shown impacts of the size of fertiliser application rate and time interval after fertilisation on nitrous oxide flux.Keywords:
nitrous oxide; soil emissions; fertilising; fertiliser spreader