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ResearchPaper
2019

Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges

Abstract (English)

Crops have different strategies to acquire poorly-available soil phosphorus (P) which are dependent on their architectural, morphological, and physiological root traits, but their capacity to enhance P acquisition varies with the type of fertilizer applied. The objective of this study was to examine how P-acquisition strategies of three main crops are affected by the application of sewage sludges, compared with a mineral P fertilizer. We carried out a 3-months greenhouse pot experiment and compared the response of P-acquisition traits among wheat, barley and canola in a soil amended with three sludges or a mineral P fertilizer. Results showed that the P-acquisition strategy differed among crops. Compared with canola, wheat and barley had a higher specific root length and a greater root carboxylate release and they acquired as much P from sludge as from mineral P. By contrast, canola shoot P content was greater with sludge than with mineral P. This was attributed to a higher rootreleased acid phosphatase activity which promoted the mineralization of sludge-derived P-organic. This study showed that contrasted P-acquisition strategies of crops allows increased use of renewable P resources by optimizing combinations of crop and the type of P fertilizer applied within the cropping system.

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Faculty

Faculty of Agricultural Sciences

Institute

Institute of Soil Science and Land Evaluation

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Faucon, M.-P., Kandeler, E., Lambers, H., Firmin, S., Michel, E., Houben, D., & Nobile, C. (2019). Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges. https://hohpublica.uni-hohenheim.de/handle/123456789/6439

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English

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630 Agriculture

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University bibliography

Sustainable Development Goals

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@techreport{Faucon2019, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/6439}, author = {Faucon, M.-P. and Kandeler, Ellen and Lambers, Hans et al.}, title = {Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges}, year = {2019}, school = {Universität Hohenheim}, }

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