Heil K., Schmidhalter U. (2017.0). The Application of EM38: Determination of Soil Parameters, Selection of Soil Sampling Points and Use in Agriculture and Archaeology. Sensors, 17(11), 2540. doi:10.3390/s17112540
Fast and accurate assessment of within-field variation is essential for detecting field-wide heterogeneity and contributing to improvements in the management of agricultural lands. The goal of this paper is to provide an overview of field scale characterization by electromagnetic induction, firstly …
Dworak V., Mahns B., Selbeck J., Gebbers R., Weltzien C. (2017.0). Terahertz Spectroscopy for Proximal Soil Sensing: An Approach to Particle Size Analysis. Sensors, 17(10), 2387. doi:10.3390/s17102387
Spatially resolved soil parameters are some of the most important pieces of information for precision agriculture. These parameters, especially the particle size distribution (texture), are costly to measure by conventional laboratory methods, and thus, in situ assessment has become the focus of a n…
Heil K., Schmidhalter U. (2017.0). Improved evaluation of field experiments by accounting for inherent soil variability. European Journal of Agronomy, 89(), 1-15. doi:10.1016/j.eja.2017.05.004
Well-controlled field experiments are used to test agronomic management practices and evaluate the performance of cultivars in highly managed plots at experimental stations, in breeding nurseries or on-farm. However, the performance of crops and therefore the interpretation of experiments is affecte…
Käthner J., Ben-Gal A., Gebbers R., Peeters A., Herppich W., Zude-Sasse M. (2017.0). Evaluating Spatially Resolved Influence of Soil and Tree Water Status on Quality of European Plum Grown in Semi-humid Climate. Frontiers in Plant Science, 8(), . doi:10.3389/fpls.2017.01053
In orchards, the variations of fruit quality and its determinants are crucial for resource effective measures. In the present study, a drip-irrigated plum production (Prunus domestica L. “Tophit plus”/Wavit) located in a semi-humid climate was studied. Analysis of the apparent electrical conductivit…
Heggemann T., Welp G., Amelung W., Angst G., Franz S., Koszinski S., Schmidt K., Pätzold S. (2017.0). Proximal gamma-ray spectrometry for site-independent in situ prediction of soil texture on ten heterogeneous fields in Germany using support vector machines. Soil and Tillage Research, 168(), 99-109. doi:10.1016/j.still.2016.10.008
Gamma spectrometric field measurements may provide high resolution information on topsoil texture. Yet, calibrations for the estimation of texture data usually have to be done site-specifically. The lack of site-independent calibrations thus limits the easy and universal use of proximal gamma-ray se…
In-situ shifted excitation Raman difference spectroscopy (SERDS) experiments are presented using a portable sensor system. Key elements of this system are an in-house developed handheld probe with an implemented dual-wavelength diode laser at 785 nm. An optical power of 120 mW is achieved ex probe. …
Leenen et al. (2017.0). Building a national (German) mid infrared database for soils. Wageningen, : .
Wallor E., Kersebaum K., Lorenz K., Gebbers R. (2017.0). Connecting crop models with highly resolved sensor observations to improve site-specific fertilisation. Advances in Animal Biosciences, 8(2), 689-693. doi:10.1017/s2040470017000358
High spatial variability of soil properties restricts the benefits of process-oriented modelling for management recommendations on field scale due to rare information about the soil inventory and its distribution. Geo-electrical mapping provides with a certain spatial pattern, but results are influe…
Koszinski, S., Heggemann, T., Ibs-Von Seht, M., Pätzold, S., Petersen, H., Steuer, A., Welp, G., Sommer, M. (2017.0). Gamma radiometric mapping of soil texture at field and regional scale. Wageningen, : .
Riebe et al. (2017.0). Laser-induced breakdown spectroscopy (LIBS) for efficient quantitative determination of elemental plant nutrients in soils: A contribution to precision agriculture. Wageningen, : .