Effect of fertilizers and irrigation on multi‐configuration electromagnetic induction measurements
| Autor: | Manuela Sarah Kaufmann, Christian von Hebel, Harry Vereecken, Lutz Weihermüller, Michael Baumecker, Eleanor Hobley, Wulf Amelung, Kathlin Schweitzer, Jan van der Kruk, Thomas F. Döring, Sara L. Bauke |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Soil map
Topsoil Soil salinity Soil test Soil texture Soil Science Soil science 04 agricultural and veterinary sciences 010501 environmental sciences 01 natural sciences Pollution Soil water 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Soil horizon ddc:640 Agronomy and Crop Science Subsoil 0105 earth and related environmental sciences |
| Zdroj: | Soil use and management 36(1), 104-116 (2020). doi:10.1111/sum.12530 |
| DOI: | 10.1111/sum.12530 |
| Popis: | Electromagnetic induction (EMI) data are often used to investigate spatial and temporal patterns of soil texture, soil water content and soil salinity. We hypothesized that the EMI methodology might thus also offer potential to detect agricultural legacy effects originating from fertilizer application and irrigation of different fields. Therefore, we performed EMI measurements on two long‐term field experiments (LTFE) at Thyrow near Berlin (Germany) that differed in agricultural management with regard to long‐term irrigation in combination with mineral (NPK and lime) and organic amendments (straw and farmyard manure). Two different rigid‐boom multi‐coil EMI instruments were used to measure simultaneously the apparent electrical conductivity (ECa) over nine different depth ranges to study the entire soil profile from topsoil to deep subsoil. Additionally, soil samples were taken from the different treatments to ground‐truth the measurements and disentangle the nutrient application or irrigation effects from natural soil heterogeneity. The soil samples indicated a rather homogenous soil and the correlation between soil parameters or states were not significant. However, the treatments showed significant differences in measured ECa values. In general, ECa values were largest on regularly irrigated as well as on mineral and organic fertilized plots, with regular irrigation exhibiting the largest impact on EMI records even though the last application was months before the EMI measurement. Overall, this study reveals that EMI data can support the classical in situ assessment of agricultural management effects within LTFE, while offering new potentials in detecting and understanding legacy effects of agricultural management on spatial soil properties at farm level. |
| Databáze: | OpenAIRE |
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