The error bars represent standard deviation and different small letter indicates a significant difference (P < 0.05) among treatments.Figure optionsDownload full-size imageDownload as PowerPoint slide
The majority of NH3 volatilization occurred within one week of N application. Similar observation has also been reported by other studies (Hayashi et al., 2006 and Pacholski et al., 2006). The second topdressing took place about 10 days before elongation-heading stage. Therefore, most of NH3 volatilization had been completed by the heading stage (Table 7).