Improving nitrogen fertiliser use efficiency in wheat using mid-row banding

Graeme A. Sandral, Ehsan Tavakkoli, Felicity Harris, Eric Koetz, Simon Diffey, John Angus

Research output: Book chapter/Published conference paperConference paperpeer-review


Fertiliser costs represent 20% to 25% of variable costs for growing grain crops. This proportion is likely to increase with the continued decline of soil organic matter and corresponding reduction in annual soil mineralisation of nitrogen (N) (e.g.Angus and Grace 2017). In approximate terms,the N mineralisation potential in cropping soilsis declining by 50% every 25 to 30 years. Soil mineralisation of N is not enough to meet crop demand, consequently N fertiliser is typically applied to wheat at sowing, stem elongation and occasionally at booting. The in-crop efficiencies offertiliser N retrieval vary greatly, with approximately 44% in above-ground plant parts, 34% in soil and 22% not recovered, which is presumably lost (Angus and Grace 2017). Increases in the efficiency with which wheat extracts fertiliser N from the soilcan result in substantial fertiliser savings.
Original languageEnglish
Title of host publicationProceedings from the GRDC Update events series
Number of pages8
Publication statusPublished - 13 Feb 2018
EventGRDC Grains Research Update - Charles Sturt University, Wagga Wagga, Australia
Duration: 13 Feb 201813 Feb 2018


ConferenceGRDC Grains Research Update
CityWagga Wagga
Internet address


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