Dr. Christina-Luise Roß
Profil
Forschungsthemen1
Cicer arietinum und Secale cereale - Anpassung an den Klimawandel durch Entwicklung trockentoleranter Pflanzenbausysteme
Quelle ↗Förderer: Bundesministerium für Landwirtschaft, Ernährung und Heimat Zeitraum: 09/2024 - 08/2027 Projektleitung: Dr. Christina-Luise Roß
Mögliche Industrie-Partner10
Stand: 26.4.2026, 19:48:44 (Top-K=20, Min-Cosine=0.4)
Rothamsted Research
P13 Treffer56.4%- Langfristige Entwicklung der Bodenfruchtbarkeit sandiger Standorte unter dem Einfluss von ackerbaulichen MaßnahmenP56.4%
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- Langfristige Entwicklung der Bodenfruchtbarkeit sandiger Standorte unter dem Einfluss von ackerbaulichen Maßnahmen
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- I-REDD+ - Impacts of Reducing Emissions from Deforestation and Forest Degradation and Enhancing Carbon StocksP53.2%
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- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business StrategiesT53.0%
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- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business StrategiesT53.0%
- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business Strategies
- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business StrategiesT53.0%
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- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business StrategiesT53.0%
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Udruzenje Eko-Inovacija na Balkanu
PT3 Treffer53.0%- ENFASYS - Encouraging Farmers Towards Sustainable Farming Systems Through Policy and Business StrategiesT53.0%
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Publikationen16
Top 25 nach Zitationen — Quelle: OpenAlex (BAAI/bge-m3 embedded für Matching).
Soil Biology and Biochemistry · 67 Zitationen · DOI
Archives of Agronomy and Soil Science · 44 Zitationen · DOI
AbstractFrom hydro-/biochar application to soils positive effects on soil characteristics and as a consequence on yield of crops were expected. The objective of this study was to compare the effects of maize biochar and maize hydrochar (HTC-char) amendments treated with or without digestate, as well as a wood biochar, mixed with or without digestate and mineral nitrogen fertilizer on yield, yield components, nutrient contents and quality of spring wheat. Therefore, a pot experiment was set up. Yield, yield components and quality were mainly influenced by nitrogen fertilizer. The application of HTC-char could have negative effects on yield and yield components of spring wheat. Hydrochar treated with digestate had no negative effects on yield of spring wheat.Keywords: hydrocharbiocharnitrogen fertilizationcrude protein content AcknowledgementsThe authors acknowledge the Leibniz-Gemeinschaft within the context of the Joint Initiative for Research and Innovation (SAW) for founding. Soil was provided for this study from a field managed by IASP (Institute of Agricultural and Urban Ecological Projects affiliated to Humboldt-University of Berlin), Berge, Brandenburg, Germany.
Archives of Agronomy and Soil Science · 39 Zitationen · DOI
During the past years, most biochar studies were carried out on tropical soils whereas perennial field experiments on temperate soils are rare. This study presents a 3-year field experiment regarding the effects of differently produced biochars (pyrolyzed wood, pyrolyzed maize silage, hydrothermal carbonized maize silage) in interaction with digestate incorporation and mineral N fertilizer application on soil C and N, crop yields of winter wheat, winter rye and maize and the quality of winter wheat. Soil C and plant available potassium were found to be significantly positive affected by pyrolyzed wood biochar whereas the latter only in combination with N fertilization. Crop yields of winter wheat, winter rye and maize were not affected by biochar and showed no interaction effects with N fertilizer supply. Wheat grain quality and nutrition contents were significantly affected by biochar application, for example, highest amounts of phosphorus, potassium and magnesium were determined in treatments amended with pyrolyzed maize silage biochar. Biochar induced an improved availability of plant nutrients, which apparently were not yield limiting in our case. These results limit the potentials of biochar for sustainable intensification in agriculture by increasing crop yields for the temperate zones. However, detection of other environmental benefits requires further investigations.
The Chemical Composition of Biogas Digestates Determines Their Effect on Soil Microbial Activity
2020Agriculture · 36 Zitationen · DOI
Digestates are commonly used as organic inputs in agriculture. This study aimed to answer four questions: (1) What are the immediate and longer-term impacts of digestates on soil microbial activity?; (2) How much of the digestates’ carbon is mineralized within the first months? (3) How do the nitrogen, lignin, cellulose, and hemicellulose contents of digestates influence microbial activity and carbon mineralization? (4) How does the soil type influence mineralization? To investigate this, dehydrogenase activity (DHA) was measured in a field trial and in laboratory experiments with five digestates (DGs), cattle slurry, and cattle manure. DHA measurements were supplemented with soil respiration experiments using two different soils. DHA was significantly increased by all organic inputs, but decreased back to the control level within seven months under field conditions. Twenty percent to 44% of the organic carbon (Corg) in the digestates was converted to CO2 after 178 days. Soil respiration was significantly negatively correlated to lignin content (r = −0.82, p < 0.01) and not correlated to nitrogen, cellulose, or hemicellulose content. On the basis of equal carbon application, slurry promoted soil respiration and DHA more strongly than digestates in the short term.
Frontiers in Plant Science · 32 Zitationen · DOI
In the face of increasingly frequent droughts threatening crop performance, ecological theory suggests that higher species diversity may help buffering productivity by making systems more resistant through resource complementarity and more resilient through higher response diversity. However, empirical evidence for these diversity effects under drought stress has remained patchy. In two pot experiments, we explored whether mixing two legume species with a contrasting response to water availability, alsike clover (AC) and black medic (BM), promotes resistance to cumulative drought stress, and resilience of aboveground crop biomass to a transient drought event. The mixture was more productive than the average of the sole crops, and this mixture effect was higher in the non-stressed than in the drought-stressed plants. However, with six levels of constant drought intensities, the mixture effect was not consistently affected by drought level. Response diversity was evident as asynchrony of growth in the two species after the drought event, with BM re-growing faster than AC. Significant resilience to drought was observed in sole AC, i.e., without response diversity. Resilience was larger in AC than in BM and increased from 44 to 72 days after sowing (DAS). The mixture was more resilient than the average resilience of the sole crops at 72 DAS, but it was never more resilient than AC, indicating that resilience is promoted by, but not dependent on response diversity. We conclude that crop diversity may contribute to drought resilience through growth asynchrony, but that species identity plays a crucial role in making systems more drought-resilient.
Agriculture · 30 Zitationen · DOI
Carbon sequestration has been proposed as a way to mitigate the impact of CO2 on the climate. At the COP21, the ‘4 per 1000 Soils for Food Security and Climate’ initiative was launched with the goal to increase global soil organic carbon (SOC) stocks by 4‰ per year. The Thyrow long-term field experiment DIV.2 was chosen to determine the feasibility of this 4 per 1000 goal under the dry and sandy conditions in Eastern Germany. The effects of different fertilizing regimes on SOC contents and winter rye yields were investigated. Winter rye is a representative crop for the region and grown as a monoculture in the experiment. The 4 per 1000 goal was achieved in all treatments including the unfertilized control, although ploughing takes place and straw is removed every year. The highest carbon sequestration of up to 0.5 t ha−1 a−1 was provided by a combination of mineral and manure fertilization. In three out of four years, no yield difference was observed between mineral-only fertilization (120 kg ha−1 N) and a combination of mineral and organic N (97.4 kg ha−1 plant available N) fertilization. Yields increased over the years in the treatment with pure organic N and decreased in all other treatments.
Archives of Agronomy and Soil Science · 18 Zitationen · DOI
Despite suggested benefits of hydrochars and biochars, little is known about their effects on root development and root-char interactions. To compare effects of two types of biochar (Pyro and Pyreg) and one hydrochar (hydrothermal carbonization (HTC)) on root growth of spring wheat, two rhizobox experiments were set up where physical contact of roots with chars was prevented using nylon gauze. Rhizoboxes were filled with unamended soil as a control or with three different soil-char mixtures (Pyro, Pyreg and HTC). Shoots and roots were harvested before flowering and at tillering in the first and second experiment, respectively. Chemical soil properties (Nt, K, Ct, pH value) were affected differently by the different chars. Both shoot and root dry matter were influenced by chars. Pyro-char had positive effects on root dry matter in both experiments. At tillering, HTC-char affected root length, root surface and number of root tips negatively. Our findings suggest that nutrients released from chars may affect root morphology of spring wheat. The comparison of different types of chars showed different effects on root growth, shoot growth and soil changes depending on feedstock, production process and the varied amount of chars.
Waste and Biomass Valorization · 13 Zitationen · DOI
Archives of Agronomy and Soil Science · 9 Zitationen · DOI
Fermentation in combination with subsequent composting of biowaste is a preferred method for municipalities to recycle organic byproducts and transform them into useful end products for soil amelioration or plant fertilization. These compost products, especially if obtained from household wastes, can be a source of hazardous components, e.g. heavy metals, pathogens, synthetic chemicals or toxic organic compounds. An avoidance test with two earthworm species (Eisenia fetida and Aporrectodea caliginosa) was conducted to assess the impact of differently processed biowaste based digestate products on soil invertebrates. Body weight changes were recorded, as well as differences in effects on adult versus juvenile earthworms.While E. fetida showed no avoidance towards the digestate products (negative avoidance, meaning that the tested products were preferred, of 80 to 100 %), A. caliginosa rejected the crude biowaste digestate compost in higher concentrations (avoidance of 45 %), but not the agglomerated or pelletized variants. A clear weight gain of up to 25 % was observed only for individuals of E. fetida. The developmental stages of the worms were not crucial for the outcome of the avoidance test.Based on the results of this study the application of biowaste products on arable land cannot be recommended without constraints.
International Journal of Agronomy · 4 Zitationen · DOI
Depending on the quality of the input substrates, process parameters, and postfermentation treatments, digestates may contain a broad spectrum of potentially toxic elements. We suspected that these contents may vary on a broad scale even under seemingly stable process conditions at the biogas plant. Digestates from four biogas plants were therefore continuously analyzed for their contents of phosphorus, nitrogen, cadmium, copper, lead, and zinc over a period of six years. The input substrates varied between the plants (e.g., cattle and pig slurry and rye and maize silage), but were the same for each plant over the whole period. The N : P ratio of the digestates ranged from 2 to 24, with the digestate coming from cofermentation of pig slurry and energy crops (“DG Pig”) having the widest range of N : P ratio over the years. Heavy metal loads of all digestates and during all evaluations did not exceed the limits set by European or German legislation, but as previously expected, showed a large variability especially if cattle or pig manure were used as substrates. Copper content of Cattle slurry before digestion was 897.7 mg kg −1 DM in one case, and zinc content of DG Pig reached 590.2 mg kg −1 DM also once during the investigation. As a result, we strongly recommend to monitor especially phosphorus, copper, and zinc contents in digestates very closely and in short intervals.
Verlag Eugen Ulmer eBooks · 1 Zitationen · DOI
In einem dreijährigen Feldversuch wurden kompostierte Gärreste aus Bioabfällen hinsichtlich ihrer pflanzenbaulichen Einsatzmöglichkeiten und ihrer Wirkung auf bodenchemische Parameter geprüft. Zudem wurden die Aufbereitungsverfahren Pelletierung und Agglomeratbildung und deren Auswirkung auf die Gärprodukteigenschaften untersucht. Es wurde festgestellt, dass die unmittelbare Düngewirkung der Produkte aufgrund der niedrigen Stickstoffverfügbarkeit gering ist. Allerdings zeigte sich nach der Anwendung eine deutliche Erhöhung der Kohlenstoffgehalte im Boden, was auf ein relevantes Humusreproduktionspotential durch derartige Gärprodukte schließen lässt. Agglomeratbildung und Pelletierung scheinen die Mineralisierung der Produkte weiter zu verlangsamen, was sich auf die Nährstofffreisetzung negativ, auf eventuelle Kohlenstoffsequenzierung jedoch positiv auswirkt. Problematisch sind speziell bei Bioabfällen hohe Gehalte an Schwermetallen und anderen Störstoffen. Die gesetzlich vorgegebenen Grenzwerte wurden in 50% der untersuchten Chargen überschritten, wobei jedoch nur max. 7% der ausgebrachten Schwermetalle im oberirdischen Pflanzenmaterial wiedergefunden wurden.
edoc Publication server (Humboldt University of Berlin) · 1 Zitationen · DOI
Im Rahmen dieser Arbeit sollten Einsatzmöglichkeiten und -grenzen von kompostierten und durch Agglomeration oder Pelletierung weiter aufbereiteten Bioabfall-Gärresten untersucht werden. Außerdem sollte geprüft werden, ob durch verschiedene Zuschlagstoffe die Eigenschaften der Produkte so verbessert werden können, dass ein marktfähiges Düngeprodukt entsteht. Dazu wurden ein Feldversuch, Gefäß-, Rhizoboxen- und Bodenatmungsversuche, phytotoxikologische Tests und Regenwurm-Vermeidungstests durchgeführt. Die Ergebnisse können wie folgt zusammengefasst werden: Die Stickstoffverfügbarkeit von kompostierten Gärprodukten aus Bioabfällen ist gering, der Gehalt an Phosphor und Kalium aber hoch. Langfristig sind so der Aufbau eines Nährstoffdepots im Boden und die Einsparung anderer Dünger möglich. Die Produkte enthalten zudem basisch wirksame Bestandteile, welche die Kalkung teilweise ersetzen können. Komposte und Gärprodukte aus Bioabfällen können zur Steigerung der Humusgehalte im Boden beitragen. Ca. 80 % des enthaltenen Kohlenstoffs liegt in stabilisierter Form vor und kann im Boden sequestriert werden. Problematisch sind hohe Schwermetall- und Störstoffgehalte. Die gesetzlich vorgegebenen Grenzwerte wurden in 50 % der getesteten Chargen überschritten. Phytotoxische Effekte wurden nur in Einzelfällen festgestellt und waren nicht dosisabhängig, sondern traten punktuell auf. Die Aktivität der Mikroorganismen im Boden wurde durch Anwendung der Gärprodukte gefördert. Der Einfluss der Gärprodukte auf Regenwürmer konnte nicht eindeutig bestimmt werden. Eine Einschränkung der Habitatfunktion nach Gärproduktanwendung wurde nicht festgestellt. Die Aufbereitung durch Agglomeration oder Pelletierung ist möglich, ohne dass die wesentlichen positiven Eigenschaften davon beeinträchtigt werden. Durch Beimengung von Zuschlagstoffen können die Düngewirkung und die physikalischen Eigenschaften der Produkte verändert werden. Dies reduziert jedoch auch den Gehalt an stabiler organischer Substanz.
Handbuch der Bodenkunde · DOI
Organische Reststoffe können in vielfältiger Weise biologische Bodeneigenschaften beeinflussen. Dieser Beitrag behandelt die Auswirkungen von abbaubarem organischem Material auf die Makro‐ und Mesofauna sowie das Mikrobiom des Bodens, wobei der Fokus einerseits auf Regenwürmern, Arthropoden und Nematoden sowie andererseits auf der Zusammensetzung des Mikrobioms und der Aktivität und Abundanz der Mikroorganismen liegt. Eine besondere Betrachtung erfahren schädliche Organismen, deren Förderung sowie direkte und indirekte Bekämpfung einschließlich der Verbreitung von Pathogenen und Antibiotikaresistenzen.
Federal Research Centre for Cultivated Plants (Julius Kühn-Institut) · DOI
In einem dreijährigen Feldversuch wurden kompostierte Gärreste aus Bioabfällen hinsichtlich ihrer pflanzenbaulichen Einsatzmöglichkeiten und ihrer Wirkung auf bodenchemische Parameter geprüft. Zudem wurden die Aufbereitungsverfahren Pelletierung und Agglomeratbildung und deren Auswirkung auf die Gärprodukteigenschaften untersucht. Es wurde festgestellt, dass die unmittelbare Düngewirkung der Produkte aufgrund der niedrigen Stickstoffverfügbarkeit gering ist. Allerdings zeigte sich nach der Anwendung eine deutliche Erhöhung der Kohlenstoffgehalte im Boden, was auf ein relevantes Humusreproduktionspotential durch derartige Gärprodukte schließen lässt. Agglomeratbildung und Pelletierung scheinen die Mineralisierung der Produkte weiter zu verlangsamen, was sich auf die Nährstofffreisetzung negativ, auf eventuelle Kohlenstoffsequenzierung jedoch positiv auswirkt. Problematisch sind speziell bei Bioabfällen hohe Gehalte an Schwermetallen und anderen Störstoffen. Die gesetzlich vorgegebenen Grenzwerte wurden in 50% der untersuchten Chargen überschritten, wobei jedoch nur max. 7% der ausgebrachten Schwermetalle im oberirdischen Pflanzenmaterial wiedergefunden wurden.
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Stammdaten
Identität, Organisation und Kontakt aus HU-FIS.
- Name
- Dr. Christina-Luise Roß
- Titel
- Dr.
- Fakultät
- Lebenswissenschaftliche Fakultät
- Institut
- Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften
- Arbeitsgruppe
- Pflanzenbau
- Telefon
- +49 30 2093-46467
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- 26.4.2026, 01:11:20