Impact of sulphur fertilisation on crop response to selenium fertilisation

Stroud, J. L., Li, H. F., Lopez-Bellido, F. J., Broadley, M. R., Foot, I., Fairweather-Tait, S. J. ORCID: https://orcid.org/0000-0002-1413-5569, Hart, D. J., Hurst, R., Knott, P., Mowat, H, Norman, K., Scott, P., Tucker, M., White, P. J., McGrath, S. P. and Zhao, F.-J. (2010) Impact of sulphur fertilisation on crop response to selenium fertilisation. Plant and Soil, 332 (1-2). pp. 31-40.

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Abstract

UK wheat (Triticum aestivum L.) has a low selenium (Se) concentration and agronomic biofortification with Se is a proposed solution. A possible limitation is that UK wheat is routinely fertilised with sulphur (S), which may affect uptake of Se by the crop. The response of wheat to Se and S fertilisation and residual effects of Se were determined in field trials over 2 consecutive years. Selenium fertilisation at 20 g ha−1 as sodium selenate increased grain Se by four to seven fold, up to 374 µg Se kg−1. Sulphur fertilisation produced contrasting effects in 2 years; in year 1 when the crop was not deficient in S, grain Se concentration was significantly enhanced by S, whereas in year 2 when crop yield responded significantly to S fertilisation, grain Se concentration was decreased significantly in the S-fertilised plots. An incubation experiment showed that addition of sulphate enhanced the recovery of selenate added to soils, probably through a suppression of selenate transformation to other unavailable forms in soils. Our results demonstrate complex interactions between S and Se involving both soil and plant physiological processes; S can enhance Se availability in soil but inhibit selenate uptake by plants. Furthermore, no residual effect of Se fertiliser applied in year 1 was found on the following crop.

Item Type:	Article
Faculty \ School:	Faculty of Medicine and Health Sciences > Norwich Medical School
UEA Research Groups:	Faculty of Medicine and Health Sciences > Research Groups > Nutrition and Preventive Medicine Faculty of Medicine and Health Sciences > Research Centres > Lifespan Health Faculty of Medicine and Health Sciences > Research Groups > Musculoskeletal Medicine Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health
Depositing User:	EPrints Services
Date Deposited:	25 Nov 2010 11:13
Last Modified:	06 Jun 2024 14:37
URI:	https://ueaeprints.uea.ac.uk/id/eprint/15110
DOI:	10.1007/s11104-009-0230-8

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