Person: Heß, Michael
Lade...
E-Mail-Adresse
Geburtsdatum
Forschungsvorhaben
Organisationseinheiten
Berufsbeschreibung
Nachname
Heß
Vorname
Michael
Name
11 Ergebnisse
Suchergebnisse
Gerade angezeigt 1 - 10 von 11
Veröffentlichung Neue Bedeutung der Sorten zur Kontrolle der Ramularia-Blattflecken in der Gerste(2020) Heß, MichaelVeröffentlichung UBA: Keine unzumutbare Einschränkung(2020) Heß, MichaelVeröffentlichung Alternative Maßnahmen gegen Ramularia(2020) Heß, MichaelVeröffentlichung Ramularia leaf spot disease of barley is highly host genotype-dependent and suppressed by continuous drought stress in the field(2020) Hoheneder, Felix; Hofer, Katharina; Heß, Michael; Groth, JenniferSince the 1980s, Ramularia leaf spot (RLS) is an emerging barley disease worldwide. The control of RLS is increasingly aggravated by a recent decline in fungicide efficacy and a lack of RLS-resistant cultivars. Furthermore, climate change increases drought periods in Europe, enhances variable weather conditions, and thus will have an impact on severity of plant diseases. Hence, identification of RLS-resistant cultivars and understanding of disease progression under abiotic stress are important aims in integrated disease management under climate change. In the present study, we evaluated quantitative RLS resistance of 15 spring barley genotypes under drought, controlled irrigation and field conditions between 2016 and 2019 and monitored microclimatic conditions within the canopy. We identified genotypes that show robust quantitative resistance to RLS in different field environments. Our findings suggest that long-lasting drought periods create unfavourable conditions for the disease and supports that the extent and duration of leaf wetness is a key factor for RLS epidemics. © The Author(s) 2020Veröffentlichung Ramularia leaf spot disease of barley is highly host genotype-dependent and suppressed by continuous drought stress in the field(2021) Hoheneder, Felix; Hofer, Katharina; Heß, Michael; Groth, JenniferSince the 1980s, Ramularia leaf spot (RLS) is an emerging barley disease worldwide. The control of RLS is increasingly aggravated by a recent decline in fungicide efficacy and a lack of RLS-resistant cultivars. Furthermore, climate change increases drought periods in Europe, enhances variable weather conditions, and thus will have an impact on severity of plant diseases. Hence, identification of RLS-resistant cultivars and understanding of disease progression under abiotic stress are important aims in integrated disease management under climate change. In the present study, we evaluated quantitative RLS resistance of 15 spring barley genotypes under drought, controlled irrigation and field conditions between 2016 and 2019 and monitored microclimatic conditions within the canopy. We identified genotypes that show robust quantitative resistance to RLS in different field environments. Our findings suggest that long-lasting drought periods create unfavourable conditions for the disease and supports that the extent and duration of leaf wetness is a key factor for RLS epidemics. © The Author(s) 2021Veröffentlichung Crashkurs Personalentwicklung(Haufe Group, 2020) Grund, Sven; Heß, Michael; Weiss, Wolfgang- Personalentwicklung planen und umsetzen - Schritt-für-Schritt-Anleitungen und zahlreiche Praxisbeispiele - Mit vielen Arbeitshilfen online Gute Maßnahmen zur Personalentwicklung erweitern Wissen und Kompetenzen von Mitarbeitern und binden Leistungsträger langfristig an das Unternehmen. Doch was ist Personalentwicklung überhaupt und welche Rolle nimmt man als "PE-Vertreter" im eigenen Unternehmen ein? Dieser Crashkurs beschreibt Inhalte und Methoden, Herangehensweisen und Instrumente und beantwortet alle wesentlichen Fragen. Sie erhalten ein Prozessmodell, das praxisnah und Schritt für Schritt alle entsprechenden Maßnahmen unterstützt. Neu in der 2. Auflage: Neue, aktualisierte und weiterentwickelte Werkzeuge und Methoden, besonders im Bereich evidenzbasierte Personalentwicklung und Organisationsentwicklung Quelle: VerlagsinformationVeröffentlichung Towards sustainable plant protection(Umweltbundesamt, 2022) Bär, Susanne; Foit, Kaarina Pirko; Heß, Michael; Knillmann, Saskia; Kotschik, Pia; Kuppe, Konstantin; Matezki, Steffen; Müller, Alexandra; Otto, Sally; Petzold, Nora; Pieper, Silvia; Wogram, Jörn; Deutschland. UmweltbundesamtWith the new draft regulation on the "Sustainable Use of Plant Protection Products" (SUR), the European Commission is concretising the pesticide reduction target of 50% by 2030 stipulated in the Farm-to-Fork Strategy. The legally binding implementation of integrated pest management sets a new course for sustainable agriculture. However, for the success of practical implementation to contribute to species conservation and to create resilient ecosystems in the agricultural landscape, further preconditions are necessary. This scientific opinion paper provides four major recommendations for action that are needed from an environmental perspective to achieve the envisaged objectives. Quelle: www.umweltbundesamt.deVeröffentlichung Vers une protection durable des cultures(Umweltbundesamt, 2022) Bär, Susanne; Foit, Kaarina Pirko; Heß, Michael; Knillmann, Saskia; Kotschik, Pia; Kuppe, Konstantin; Matezki, Steffen; Müller, Alexandra; Otto, Sally; Petzold, Nora; Pieper, Silvia; Wogram, Jörn; Deutschland. UmweltbundesamtDans la proposition de règlement concernant une utilisation des produits phytopharmaceutiques compatible avec le développement durable, la Commission européenne concrétise l'objectif de réduction de 50 % des pesticides de la stratégie "Farm-to-fork". Le développement d'une agriculture durable est cadrée par une mise en œuvre juridiquement contraignante de la lutte intégrée. Mais pour que les mesures contribuent à la préservation des écosystèmes sensibles des paysages agricoles, d'autres conditions sont nécessaires. Ce Scientific Opinion Paper explique, dans une perspective environnementale, quatre propositions d'amélioration de la Directive SUR qui permettraient d'atteindre cet objectif. Quelle: www.umweltbundesamt.deVeröffentlichung Auf dem Weg zu einem nachhaltigen Pflanzenschutz(Umweltbundesamt, 2022) Bär, Susanne; Foit, Kaarina Pirko; Heß, Michael; Knillmann, Saskia; Kotschik, Pia; Kuppe, Konstantin; Matezki, Steffen; Müller, Alexandra; Otto, Sally; Petzold, Nora; Pieper, Silvia; Wogram, Jörn; Deutschland. UmweltbundesamtIm Verordnungsentwurf zur "Nachhaltigen Anwendung von Pflanzenschutzmitteln" (SUR) konkretisiert die Europäische Kommission das 50 % Pestizidreduktionsziel der Farm-to-Fork-Strategy. Durch eine rechtsverbindliche Umsetzung des integrierten Pflanzenschutzes werden die Weichen für eine nachhaltige Landwirtschaft neu gestellt. Doch damit die Vorgaben auch in der Praxis wirken, zum Artenerhalt beitragen und resiliente Ökosysteme in Agrarlandschaften hervorbringen kann, braucht es noch weitere Voraussetzungen. Dieses Scientific Opinion Paper erklärt aus der Umweltperspektive vier Verbesserungsvorschläge zur SUR, die dafür notwendig sind. Quelle: www.umweltbundesamt.deVeröffentlichung Spore dispersal patterns of the ascomycete fungus Ramularia collo-cygni and their influence on disease epidemics(2023) Havis, N. D.; Kaczmarek, J.; Jedryczka, M.; Heß, Michael; Fang, ZhaolunRamularia leaf spot is a major economic disease of barley caused by the dothidiomycete fungus Ramularia collo-cygni. The fungus has a complex life cycle which includes extensive late season spore release events and a seed-borne phase. Predicting disease epidemics during the growing season remains a difficult challenge. To better understand the interaction between spore movement and disease epidemics, spore samplers were set up in Germany (two sites over 4 years), Poland (seven sites over 2 years) and the UK (two sites over 9 years), where the disease has been observed. Spore concentrations were determined using a real time PCR assay, and meteorological data were obtained from co-located automatic stations. Spore release events were seen to peak in June on mainland Europe and July in the UK. The pattern of spore release was broadly similar across countries with earlier peaks in mainland Europe. A relationship was observed in the UK between July spore levels and disease in following winter barley crops. Rainfall and temperature were proposed as significant drivers of spore release in these months. The major environmental parameter associated with spore release across the two UK sites was crop surface wetness, although some site-specific interactions were noted for rainfall and wind movement. Regression analysis of spore patterns and disease epidemics indicates a relationship between spore levels 75â€Ì105 days pre harvest and final disease levels in UK winter barley crops. This relationship was not observed in spring barley. The implications on risk forecasts are discussed.