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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 ; Hart, D. J ; Hurst, R ; Knott, P ; Mowat, H ; Norman, K ; Scott, P ; Tucker, M ; White, P. J ; McGrath, S. P ; Zhao, F. J

Plant and soil, 2010-07, Vol.332 (1-2), p.31-40 [Periódico revisado por pares]

Dordrecht: Dordrecht : Springer Netherlands

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Título:
Impact of sulphur fertilisation on crop response to selenium fertilisation
Autor: Stroud, J. L ; Li, H. F ; Lopez-Bellido, F. J ; Broadley, M. R ; Foot, I ; Fairweather-Tait, S. J ; Hart, D. J ; Hurst, R ; Knott, P ; Mowat, H ; Norman, K ; Scott, P ; Tucker, M ; White, P. J ; McGrath, S. P ; Zhao, F. J
Assuntos: Agricultural site preparation ; Agricultural soils ; Agrology ; Agronomy ; Agronomy. Soil science and plant productions ; Animal, plant and microbial ecology ; Biological and medical sciences ; Biomedical and Life Sciences ; Ecology ; Fertilizers ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Grains ; Life Sciences ; Plant Physiology ; Plant Sciences ; Plants ; Regular Article ; Selenium ; Selenium biofortification ; Selenium speciation ; Soil science ; Soil Science & Conservation ; Soil-plant relationships. Soil fertility ; Soil-plant relationships. Soil fertility. Fertilization. Amendments ; Straw ; Sulfur ; Sulfur compounds ; Sulphate ; Wheat ; Wheat soils
É parte de: Plant and soil, 2010-07, Vol.332 (1-2), p.31-40
Notas: http://dx.doi.org/10.1007/s11104-009-0230-8
Descrição: 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.
Editor: Dordrecht: Dordrecht : Springer Netherlands
Idioma: Inglês

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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 ; Hart, D. J ; Hurst, R ; Knott, P ; Mowat, H ; Norman, K ; Scott, P ; Tucker, M ; White, P. J ; McGrath, S. P ; Zhao, F. J

Dordrecht: Dordrecht : Springer Netherlands

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