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001     1032539
005     20250203133220.0
024 7 _ |a 10.1016/j.scitotenv.2024.177517
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024 7 _ |a 0048-9697
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024 7 _ |a 1879-1026
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024 7 _ |a 10.34734/FZJ-2024-06327
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037 _ _ |a FZJ-2024-06327
082 _ _ |a 610
100 1 _ |a Mohammed, Gihan
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245 _ _ |a Simulation of soil phosphorus dynamics and crop yield for organic and mineral fertilization treatments at two long-term field sites
260 _ _ |a Amsterdam [u.a.]
|c 2024
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520 _ _ |a The efficacy of phosphorus (P) based fertilizers is frequently compromised by soil dynamics that render much ofthe applied P unavailable for crops. This study aimed to: (i) validate a new P model's prediction of plant-availableP; (ii) analyze the effects of organic versus mineral fertilization on P availability and crop yield; and (iii) examinetemporal changes in P pools under various fertilization regimes. Data were collected from two long-term fieldtrials, Dikopshof and Bad Lauchst¨adt, in Germany, using organic (FYM), mineral (MIN), a combination of organicand 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, totalP and available soil P. After 120 years of repeated P fertilization, simulations at Dikopshof revealed a positive Pbalance 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 Lauchst¨adt, 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 efficiencyranging from 50 % to 99 %, while sugar beet presented the highest P-use efficiency (up to 122 %). The lowest Papplication rates exhibited, FYM treatment, the highest P-use efficiency for all crops. Model pools were successfullylinked to field-measured soil P fractions using CAL and DGT methods, providing initial predictions ofvarious soil P fractions across different fertilization strategies.
536 _ _ |a 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)
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700 1 _ |a Siebers, Nina
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700 1 _ |a Merbach, Ines
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700 1 _ |a Seidel, Sabine J.
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700 1 _ |a Herbst, Michael
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773 _ _ |a 10.1016/j.scitotenv.2024.177517
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|t The science of the total environment
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856 4 _ |u https://juser.fz-juelich.de/record/1032539/files/full_text.pdf
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