Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1111/sum.13088 |
Licence  |
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| Title (Primary) | Decrease in soil test phosphorus levels under omitted phosphorus fertilizer application |
| Author | Steinfurth, K.; Börjesson, G.; Denoroy, P.; Eichler-Löbermann, B.; Gans, W.; Heyn, J.; Hirte, J.; Jansen, F.; Koch, D.; Merbach, I.; Mollier, A.; Morel, C.; Panten, K.; Peiter, E.; Poulton, P.R.; Reitz, T.
; Holton Rubæk, G.; Spiegel, H.; van Laak, M.; von Tucher, S.; Buczko, U. |
| Source Titel | Soil Use and Management |
| Year | 2024 |
| Department | BZF; BOOEK |
| Volume | 40 |
| Issue | 3 |
| Page From | e13088 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://bsssjournals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2Fsum.13088&file=sum13088-sup-0001-AppendixS1.zip |
| Keywords | European long-term field experiments, exponential decline, legacy P, Olsen-P, residual P |
| Abstract | Many European cropped soils have high soil test P (STP)
values in the top soil because of P accumulation over many years of
fertilizer application. This should allow to save P fertilizer
applications for some years without STP values decreasing to a level
that might negatively impact crop yield. However, the way STP develops
under omitted P fertilizer application is not well understood. We
examined STP development under omitted P fertilizer application for
timeframes between 7 and 46 years on 96 unfertilized treatments (P0
treatments) of 43 European long-term P field experiments, using five
different STP methods. For comparability, values obtained by different
STP methods were converted to Olsen-P concentrations. We fitted
exponential decay curves to Olsen-P data of each P0 treatment defined by
initial Olsen-P values (Olsen-Pi), rates of decrease (k) and asymptotes (A),
reflecting minimum obtainable STP. Subsequently, we analysed whether
the variables most commonly recorded in experiments, are sufficient to
explain the variation in model parameters, these variables being P
export, clay content, Corg and pH as well as average annual
temperature and precipitation. We found that out of our predictor
variables, soil clay content, precipitation and temperature were showing
the most prominent effects on the parameters Olsen-Pi, A or k.
However, the amount of variation explained by the considered variables
was too low to potentially facilitate a prediction of STP decrease, and
various P0 treatments showed no clear Olsen-P decrease or unexpectedly
high asymptotes. This hints at a strong influence of the P sorption
capacity of the soil with often high potential for replenishment from
less available P pools. In connection with P introduction from the
subsoil or possibly from surrounding plots, the extension of timeframes
of omitted P fertilizer application without reaching critical STP values
for crop production, might be explainable. Corresponding effects could
not be analysed because of lack of data for most P0 treatments, calling
for the additional determination of, for example, the maximum P sorption
capacity, total P and subsoil P in future experiments. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29439 |
| Steinfurth, K., Börjesson, G., Denoroy, P., Eichler-Löbermann, B., Gans, W., Heyn, J., Hirte, J., Jansen, F., Koch, D., Merbach, I., Mollier, A., Morel, C., Panten, K., Peiter, E., Poulton, P.R., Reitz, T., Holton Rubæk, G., Spiegel, H., van Laak, M., von Tucher, S., Buczko, U. (2024): Decrease in soil test phosphorus levels under omitted phosphorus fertilizer application Soil Use Manage. 40 (3), e13088 10.1111/sum.13088 |
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