Jarosch, Klaus; Santner, Jakob; Parvage, Mohammed Masud; Gerzabek, Martin Hubert; Zehetner, Franz; Kirchmann, Holger (2018). Four soil phosphorus (P) tests evaluated by plant P uptake and P balancing in the Ultuna long-term field experiment. Plant, Soil and Environment, 64(9), pp. 441-447. Institute of Agricultural Economics and Information 10.17221/313/2018-PSE
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Soil phosphorus (P) availability was assessed with four different soil P tests on seven soils of the Ultuna long-term field experiment (Sweden). These four soil P tests were (1) P-H2O (water extractable P); (2) P-H2OC10 (water extractable P upon 10 consecutive extractions); (3) P-AL (ammonium lactate extractable P) and (4) P-CDGT (P desorbable using diffusive gradients in thin films). The suitability of these soil P tests to predict P availability was assessed by correlation with plant P uptake (mean of preceding 11 years) and soil P balancing (input vs. output on plot level for a period of 54 years). The ability to predict these parameters was in the order P-H2OC10 > P-CDGT > P-H2O > P-AL. Thus, methods considering the P-resupply from the soil solid phase to soil solution performed clearly better than equilibrium-based extractions. Our findings suggest that the P-AL test, commonly used for P-fertilizer recommendations in Sweden, could not predict plant P uptake and the soil P balance in a satisfying way in the analysed soils.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Geography > Physical Geography 08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science 08 Faculty of Science > Institute of Geography |
UniBE Contributor: |
Jarosch, Klaus |
Subjects: |
900 History > 910 Geography & travel 600 Technology > 630 Agriculture |
ISSN: |
1214-1178 |
Publisher: |
Institute of Agricultural Economics and Information |
Language: |
English |
Submitter: |
Klaus Jarosch |
Date Deposited: |
22 Mar 2019 12:52 |
Last Modified: |
05 Dec 2022 15:26 |
Publisher DOI: |
10.17221/313/2018-PSE |
Uncontrolled Keywords: |
soil testing; macronutrient; phosphorus desorption; nutrition; fertilization; saturation index |
BORIS DOI: |
10.7892/boris.126560 |
URI: |
https://boris.unibe.ch/id/eprint/126560 |