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| Hauptseite > Publikationsdatenbank > Subsoils—a sink for excess fertilizer P but a minor contribution to P plant nutrition: evidence from long-term fertilization trials > print |
| Hauptseite > Publikationsdatenbank > Subsoils—a sink for excess fertilizer P but a minor contribution to P plant nutrition: evidence from long-term fertilization trials > print |
| 001 | 902251 | ||
| 005 | 20250310131245.0 | ||
| 024 | 7 | _ | |a 10.1186/s12302-021-00496-w |2 doi |
| 024 | 7 | _ | |a 0934-3504 |2 ISSN |
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| 024 | 7 | _ | |a 2190-4707 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2021-04121 |
| 082 | _ | _ | |a 610 |
| 100 | 1 | _ | |a Siebers, Nina |0 P:(DE-Juel1)164361 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Subsoils—a sink for excess fertilizer P but a minor contribution to P plant nutrition: evidence from long-term fertilization trials |
| 260 | _ | _ | |a Heidelberg |c 2021 |b Springer |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1636384714_22372 |2 PUB:(DE-HGF) |
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| 520 | _ | _ | |a BackgroundThe phosphorus (P) stocks of arable subsoils not only influence crop production but also fertilizer P sequestration. However, the extent of this influence is largely unknown. This study aimed to (i) determine the extent of P sequestration with soil depth, (ii) analyze P speciation after long-term P fertilization, and (iii) compare soil P tests in predicting crop yields. We analyzed four long-term fertilizer trials in Germany to a depth of 90 cm. Treatments received either mineral or organic P, or a combination of both, for 16 to 113 years. We determined inorganic and organic P pools using sequential extraction, and P speciation using 31P nuclear magnetic resonance (NMR) and X-ray absorption near edge structure (XANES) spectroscopy. In addition, we applied three P soil tests, double-lactate (DL), calcium acetate lactate (CAL), and diffusive gradients in thin films (DGT).ResultsThe results suggested that plants are capable of mobilizing P from deeper soil layers when there is a negative P budget of the topsoil. However, fertilization mostly only showed insignificant effects on P pools, which were most pronounced in the topsoil, with a 1.6- to 4.4-fold increase in labile inorganic P (Pi; resin-P, NaHCO3–Pi) after mineral fertilization and a 0- to 1.9-fold increase of organic P (Po; NaHCO3–Po, NaOH–Po) after organic P fertilization. The differences in Po and Pi speciation were mainly controlled by site-specific factors, e.g., soil properties or soil management practice rather than by fertilization. When modeling crop yield response using the Mitscherlich equation, we obtained the highest R2 (R2 = 0.61, P < 0.001) among the soil P tests when using topsoil PDGT. However, the fit became less pronounced when incorporating the subsoil.ConclusionWe conclude that if the soil has a good P supply, the majority of P taken up by plants originates from the topsoil and that the DGT method is a mechanistic surrogate of P plant uptake. Thus, DGT is a basis for optimization of P fertilizer recommendation to add as much P fertilizer as required to sustain crop yields but as low as necessary to prevent harmful P leaching of excess fertilizer P. |
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| 588 | _ | _ | |a Dataset connected to CrossRef, Journals: juser.fz-juelich.de |
| 700 | 1 | _ | |a Wang, Liming |b 1 |
| 700 | 1 | _ | |a Funk, Theresa |0 P:(DE-Juel1)172719 |b 2 |
| 700 | 1 | _ | |a von Tucher, Sabine |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Merbach, Ines |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Schweitzer, Kathlin |0 P:(DE-HGF)0 |b 5 |
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| 773 | _ | _ | |a 10.1186/s12302-021-00496-w |g Vol. 33, no. 1, p. 60 |0 PERI:(DE-600)2593962-2 |n 1 |p 60 |t Environmental sciences Europe |v 33 |y 2021 |x 2190-4715 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/902251/files/PDF.js%20viewer.pdf |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/902251/files/Siebers2021_Article_SubsoilsASinkForExcessFertiliz.pdf |
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