@misc{SutLohmannGrimmHeinrichetal., author = {Sut-Lohmann, Magdalena and Grimm, Mark and Heinrich, Martina and Baig, Sawdha and Raab, Thomas}, title = {Soil nitrogen pool and its fractions in German apple orchards under organic vs conventional management}, series = {EGU General Assembly 2023, Vienna, Austria, 24-28 Apr 2023}, journal = {EGU General Assembly 2023, Vienna, Austria, 24-28 Apr 2023}, doi = {10.5194/egusphere-egu23-3208}, pages = {1}, abstract = {Agriculture is a massive production with intensive practices, like large variety of agro-chemicals, heavy machinery etc., that support food security. However, recently more and more attention is given to food safety in relation to human, environment and soil health. An alternative strategy is organic agriculture that avoids the use of synthetic chemicals and maintain the sustainable food production. But organic farming cannot completely support the worlds foods demand, so adaptation is needed to reach a sustainable productivity while protecting the environment. Soil nitrogen (N) pool consists of inorganic and organic fractions. Inorganic and a part of labile organic N is a primary nutrient source for plants and microbes. Different nitrogen fractions play various roles in soil ecosystems and can be strongly influenced by the site management. Soil nitrogen transformations are directly relatable to plant health, thus strongly influence healthy functioning of soil ecosystem. Knowledge about the soil nitrogen pools is necessary to assess the proper and sustainable fertilization approaches under various management practices. To evaluate various N fractions, fresh soil samples were sampled (20 cm depth, row and near tree) at 8 conventional and 8 organic apple farms (Germany: states of Brandenburg, Saxsony and Saxony-Anhalt), with various age, locations and management practices. Soil samples were analyzed using CNS, Kjeldhal digestion, spectrophotometer and chloroform fumigation. The aim of this study is to compare the total and labile (particulate organic, microbial biomass and water extractable organic) N fractions in soil samples considering various site management approaches, topography and climate.}, language = {de} } @misc{GrimmSutLohmannRaabetal., author = {Grimm, Mark and Sut-Lohmann, Magdalena and Raab, Thomas and Heinrich, Martina}, title = {Integrated analysis of Multifunctional Fruit production landscapes to promote ecosystem services and sustainable land-use under climate change (MultiFruit): Approaches and first results of soil sampling campaign}, series = {EGU General Assembly 2023, Vienna, Austria, 24-28 Apr 2023}, journal = {EGU General Assembly 2023, Vienna, Austria, 24-28 Apr 2023}, doi = {10.5194/egusphere-egu23-12714}, pages = {2}, abstract = {Beginning in 2020 the research of the MultiFruit cluster seeks to optimize food production and the provision of ecosystem services in multifunctional landscapes. Joining agricultural production with the provision of ecosystem services and the preservation of biological diversity, the outcomes of this project aim to provide comprehensive findings to farmers, and the agricultural community as a whole, that are also applicable in the face of climate change. Active apple orchards located in greater Brandenburg, Germany of both organic and conventional management practices have been selected as the sites of research. The present state of organic apple orchards in Germany can best be described as organic "conventionalization"; high yielding orchards with little to no plant diversity, with the major differences being the substitution of synthetic fertilizers, pesticides, herbicides, and fungicides with organic alternatives certified by the Federal Office of Consumer Protection and Food Safety (Bundesamt f{\"u}r Verbraucherschutz und Lebensmittelsicherheit). The project implements an interdisciplinary approach, with researchers of ecology, economics, soil and microbial sciences. The ecological subproject is investigating how local management measures and the surrounding landscapes affect natural pest control by beneficial insects. The soil group are investigating the toxicological and soil health impacts of conventional and organic practices through analysis of both plant and soil material collected from the orchards. Microbial studies seek to provide information on the microorganisms that promote the growth, health, and performance of fruit trees. The economic studies aim to assess the costs and benefits of management measures and resulting pest control services for fruit growers and society as a whole. The overall expected outcome of this cluster is to maximize ecosystem services provided by the orchards while optimizing yield and maintaining soil and orchard health. Here we show the preliminary results of the 2021 field campaign related to the soil group. The processed plant and soil material was analyzed at our laboratory and total elemental concentration of all constituents was determined using Microwave assisted MP-AES for select metals and cations (Zn, Cu, Fe, Al, Mg, Ca, K). These results, in conjunction with measured soil properties (pH, EC, Scheibler carbonate measurement, Total N, Total C) aid in the effort to determine the effects of the various management practices on the soil health and the mobility and translocation of metals and cations within the plant tissues.}, language = {en} } @misc{SutLohmannGrimmKaestneretal., author = {Sut-Lohmann, Magdalena and Grimm, Mark and K{\"a}stner, Friederike and Raab, Thomas}, title = {Brassica juncea as a Feasible Hyperaccumulator of chosen potentially toxic metals under extreme environmental conditions}, series = {International Journal of Environmental Research}, volume = {17}, journal = {International Journal of Environmental Research}, number = {3}, issn = {1735-6865}, doi = {10.1007/s41742-023-00528-8}, language = {de} } @misc{GrimmSutLohmannRaab, author = {Grimm, Mark and Sut-Lohmann, Magdalena and Raab, Thomas}, title = {Impacts of Farming Practices on Potentially Toxic Elements (PTEs) and micronutrients in German Apple Orchards}, series = {Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, Einladung und Programm Halle (Saale), 2.-8. September 2023}, journal = {Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, Einladung und Programm Halle (Saale), 2.-8. September 2023}, pages = {78}, language = {en} }