Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.scitotenv.2024.177517 |
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| Title (Primary) | Simulation of soil phosphorus dynamics and crop yield for organic and mineral fertilization treatments at two long-term field sites |
| Author | Mohammed, G.; Siebers, N.; Merbach, I.; Seidel, S.J.; Herbst, M. |
| Source Titel | Science of the Total Environment |
| Year | 2024 |
| Department | BZF |
| Volume | 957 |
| Page From | art. 177517 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://ars.els-cdn.com/content/image/1-s2.0-S0048969724076745-mmc1.docx |
| Keywords | Phosphorus cycle; Available soil phosphorus; Modelling; Long-term; Crop yield |
| Abstract | The efficacy of phosphorus (P) based fertilizers is frequently compromised by soil dynamics that render much of the applied P unavailable for crops. This study aimed to: (i) validate a new P model's prediction of plant-available P; (ii) analyze the effects of organic versus mineral fertilization on P availability and crop yield; and (iii) examine temporal changes in P pools under various fertilization regimes. Data were collected from two long-term field trials, Dikopshof and Bad Lauchstädt, in Germany, using organic (FYM), mineral (MIN), a combination of organic and mineral (MIX) fertilizers, and unfertilized treatments. The AgroC model, incorporating a new P module, accurately predicted P dynamics in cropped plots. At both sites, MIX presented the highest yield, P removal, total P and available soil P. After 120 years of repeated P fertilization, simulations at Dikopshof revealed a positive P balance in MIN (11.1 % with observed 13 %) and in MIX (15 % with observed 15 %), but negative in FYM (−4.9 % with observed −5 %). However, at Bad Lauchstädt, the P balance was negative in all treatments except in MIN (+1.04 %), indicating P depletion. Among crops, cereals showed the most variated yields, with P-use efficiency ranging from 50 % to 99 %, while sugar beet presented the highest P-use efficiency (up to 122 %). The lowest P application rates exhibited, FYM treatment, the highest P-use efficiency for all crops. Model pools were successfully linked to field-measured soil P fractions using CAL and DGT methods, providing initial predictions of various soil P fractions across different fertilization strategies. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30007 |
| Mohammed, G., Siebers, N., Merbach, I., Seidel, S.J., Herbst, M. (2024): Simulation of soil phosphorus dynamics and crop yield for organic and mineral fertilization treatments at two long-term field sites Sci. Total Environ. 957 , art. 177517 10.1016/j.scitotenv.2024.177517 |
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