Accessibility navigation

Recovery of nitrogen from different sources following applications to winter wheat at and after anthesis

Gooding, M. J., Gregory, P. J., Ford, K. E. and Ruske, R. E. (2007) Recovery of nitrogen from different sources following applications to winter wheat at and after anthesis. Field Crops Research, 100 (2-3). pp. 143-154. ISSN 0378-4290

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/j.fcr.2006.06.002


The effects of applying nitrogen (30 or 40 kg N/ha) to wheat crops at and after anthesis, after 200 kg N/ha had already been applied to the soil during stem extension, were studied in field experiments comprising complete factorial combinations of different cultivars, fungicide applications and nitrogen treatments. Actual recoveries of late-season fertilizer nitrogen (LSFN), as indicated by N-15 studies, interacted with cultivar and fungicide treatment, and depended on nitrogen source (Urea applied as a solution to the foliage, or as ammonium nitrate applied to the soil) and year. These interactions, however, were not reflected in apparent fertilizer recoveries ((N in grain with LSFN - N in grain without LSFN)/N applied as LSFN), or in the crude protein concentration. Apparent fertilizer recovery was always lower than actual recoveries, and declined during grain filling. Fertilizer treatments with higher actual fertilizer recoveries were associated with lower net renlobilisation of non-LSFN (net remobilised N = N in above ground crop at anthesis - N in non-grain, above ground crop at harvest). LSFN also increased mineral nitrogen in the soil at harvest even when applied as a solution to the foliage. These effects are discussed in relation to potential grain N demand. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:Article
Divisions:Life Sciences > School of Agriculture, Policy and Development
Interdisciplinary centres and themes > Soil Research Centre
ID Code:8599
Uncontrolled Keywords:wheat, nitrogen recovery, nitrogen use efficiency, foliar urea, PROTEIN-CONTENT, GRAIN-YIELD, FLAG LEAF, UREA, REMOBILIZATION, FUNGICIDE, QUALITY, ACCUMULATION, SENESCENCE, FERTILIZER

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation