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Registros recuperados: 12
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Below- and aboveground abundance and distribution of fungal entomopathogens in experimental conventional and organic cropping systems. Organic Eprints
Meyling, Nicolai V.; Thorup-Kristensen, Kristian; Eilenberg, Jørgen.
The below- and aboveground communities of fungal entomopathogens (Ascomycota: Hypocreales) were investigated in an experimental conventional and organic vegetable cropping system over two seasons in Denmark. The experimental design allowed for evaluating differences between farming practices in the occurrence of soil-borne fungal entomopathogens and as natural infections aboveground in arthropod hosts. Belowground, Metarhizium anisopliae dominated the agricultural field with Beauveria bassiana, Metarhizium flavoviride and Isaria fumosorosea being present at lower frequencies. Abundances of M. anisopliae were not different between conventional and organic soils. Aboveground, B. bassiana was the most common fungal entomopathogen in arthropod host cadavers....
Tipo: Journal paper Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2011 URL: http://orgprints.org/19301/4/19301.pdf
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Research collaboration between China and Denmark for development of systemic approaches to agro-ecological pest management without pesticides with focus on vegetable, fruit and berry crops. Proceedings and recommendations from two network workshops Organic Eprints
Halberg, Niels; Andreasen, Lise; Ravnskov, Sabine; Steenberg, Tove; Enkegaard, Annie; Sigsgaard, Lene; Eilenberg, Jørgen; Munk, Lisa; Langer, Vibeke; Korsgaard, Maren; Wu, Wenliang; Qiao, Yuhui; Zhang, Long; Guo, Yanbin; Liu, Yunhui; Zhu, Zengrong; Wang, Jianwu.
This report is the result of a network project which was established to discuss the potential for collaboration on development of systemic approaches to pest management without pesticides between Chinese and Danish researchers. The focus is on systemic approaches rather than input substitution of synthetic chemicals with agents of natural origin, however, the latter is considered as an integrated tool for the development and design of systemic approaches. The discussions were, furthermore, limited to management of invertebrate pests as well as diseases, while other pests such as weeds have not been included in the discussions. The discussions took place at two workshops and were based on presentations of research from the two countries and field visits in...
Tipo: Report Palavras-chave: Crop combinations and interactions Vegetables Biodiversity and ecosystem services Fruit and berries Crop health; Quality; Protection.
Ano: 2013 URL: http://orgprints.org/22350/7/22350.pdf
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Below- and aboveground abundance and distribution of fungal entomopathogens in experimental conventional and organic cropping systems Organic Eprints
Meyling, Nicolai V.; Thorup-Kristensen, Kristian; Eilenberg, Jørgen.
The below- and aboveground communities of fungal entomopathogens (Ascomycota: Hypocreales) were investigated in an experimental conventional and organic vegetable cropping system over two seasons in Denmark. The experimental design allowed for evaluating differences between farming practices in the occurrence of soil-borne fungal entomopathogens and as natural infections aboveground in arthropod hosts. Belowground, Metarhizium anisopliae dominated the agricultural field with Beauveria bassiana, Metarhizium flavoviride and Isaria fumosorosea being present at lower frequencies. Abundances of M. anisopliae were not different between conventional and organic soils. Aboveground, B. bassiana was the most common fungal entomopathogen in arthropod host cadavers....
Tipo: Journal paper Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2011 URL: http://orgprints.org/19680/4/19680.pdf
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Økologisk dyrkning fremmer den naturlige regulering af skadedyr Organic Eprints
Meyling, Nicolai V.; Eilenberg, Jørgen.
Naturlige svampesygdomme, som hjælper med til at regulere skadedyr i grønsager, er hyppigere i økologiske dyrkningssystemer sammenlignet med konventionelle. Samtidig er der færre overvintrende kålfluepupper. Det viser de foreløbige resultater fra den første dyrkningssæson i FØJO III-projektet VegQure.
Tipo: Newspaper or magazine article Palavras-chave: Vegetables; Biodiversity and ecosystem services.
Ano: 2007 URL: http://orgprints.org/14189/1/14189.pdf
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Status og nye udfordringer: Biologisk bekæmpelse af skadedyr Organic Eprints
Eilenberg, Jørgen; Jespersen, Jørgen B..
Biologisk bekæmpelse var en succes, da det blev introduceret første gang i 1880'erne i Californien. I artiklen defineres forskellige strategier og vi gør status over den faktiske brug af biologisk bekæmpelse, både i Danmark og globalt. Der er fortsat et stort potentiale for biologisk bekæmpelse, og metoden er mere aktuel end nogensinde. Der er dog fortsat behov for at vide mere om organismerne og deres samspil med andre arter og deres omgivelser.
Tipo: Newspaper or magazine article Palavras-chave: Crop health; Quality; Protection Food security; Food quality and human health Regulation Consumer issues Biodiversity and ecosystem services.
Ano: 2008 URL: http://orgprints.org/14148/1/14148.pdf
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Ecology of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae in temperate agroecosystems: potential for conservation biological control Organic Eprints
Meyling, Nicolai V.; Eilenberg, Jørgen.
It is increasingly recognized that the biodiversity in agroecosystems deliver significant ecosystem services to agricultural production such as biological control of pests. Entomopathogenic fungi, specifically the anamorphic taxa Beauveria bassiana and Metarhizium anisopliae, Hypocreales (Ascomycota), are among the natural enemies of pests in agroecosystems and the fungi are candidates for future conservation biological control in temperate regions. Conservation biological control is a biological control strategy in which farming practices and environmental manipulations are adopted to enhance the living conditions for specific natural enemies of pests. However, in order to manipulate the environment for the benefit of populations of the entomopathogens,...
Tipo: Journal paper Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2007 URL: http://orgprints.org/11196/1/11196.pdf
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Enhanced natural regulation of the belowground pest Delia radicum in organic farming systems Organic Eprints
Meyling, Nicolai V.; Navntoft, Søren; Philipsen, Holger; Thorup-Kristensen, Kristian; Eilenberg, Jørgen.
Population dynamics of the cabbage root fly Delia radicum in three different organic and one conventional cabbage cropping systems were evaluated over 3 years. Oviposition was reduced over time, but not affected by organic farming practice. Pupal production was reduced in all organic systems compared to the conventional system in all years, but pupal parasitation rates were similar among systems. More predators of fly eggs were present in the organic system O2. Reduced larval survival rates in the organic systems may be result of increased natural enemy activity and plant effects.
Tipo: Journal paper Palavras-chave: Soil biology; Vegetables; Biodiversity and ecosystem services.
Ano: 2011 URL: http://orgprints.org/19304/4/19304.pdf
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Entomopathogenic fungi infecting non-pest insects: Implications for ecosystem services and relevance of behavioural ecology Organic Eprints
Meyling, Nicolai V.; Eilenberg, Jørgen.
Entomopathogenic fungi infect a wide array of insects from most orders and they are among the natural enemies that contribute to the regulation of insect populations. However, only a limited number of studies have focused on the impact of fungal pathogens on populations of non-pest insects. Effects of entomopathogenic fungi on non-pest host populations should receive more attention based on the increasing interest in conservation biological control. In this strategy, founded on competition theory, non-pest host populations adjacent to cropping systems will in principle affect pest populations through shared natural enemies. We present examples of selected non-pest host-fungus systems from temperate ecosystems that are relevant for the expected ecosystem...
Tipo: Conference paper, poster, etc. Palavras-chave: Biodiversity and ecosystem services.
Ano: 2008 URL: http://orgprints.org/14152/1/14152.pdf
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Molecular diversity of the Metarhizium anisopliae lineage in an agricultural field Organic Eprints
Steinwender, Bernhardt M.; Enkerli, Jürg; Widmer, Franco; Eilenberg, Jørgen; Meyling, Nicolai V..
Entomopathogenic fungal isolates identified by morphology as Metarhizium anisopliae may belong to different species when identified by molecular characters. We isolated Metarhizium spp. from an experimental agricultural field under both conventional and organic farming regimes using Tenebrio molitor as bait insect to assess the molecular diversity within the soil. Isolates were analyzed using DNA sequencing and applying SSR markers. Within the former M. anisopliae lineage, we found M. brunneum (86.3%), M. robertsii (11.3%) and M. majus (3.4%) in the soil samples. Several genotypes of each species were identified based on SSR markers. Differences in abundance of the species and their genotypes suggest different adaptations to the soil environment of the...
Tipo: Journal paper Palavras-chave: Soil biology; Biodiversity and ecosystem services.
Ano: 2011 URL: http://orgprints.org/19302/4/19302.pdf
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Hvem gavner hvem i marken? Organic Eprints
Eilenberg, Jørgen; Jensen, Annette B.; Meyling, Nicolai V..
I det dyrkede land ønsker vi en høj produktion af sunde fødevarer samtidig med, at økosystemets biologiske mangfoldighed er så høj som muligt. Naturlige fjender er med til at holde skadedyrene nede uden brug af pesticider. Men når nogle svampearter angriber de nyttige insekter som rovinsekterne og bierne, kan det indirekte hæmme fødevareproduktionen.
Tipo: Other Palavras-chave: Biodiversity and ecosystem services.
Ano: 2008 URL: http://orgprints.org/14190/1/14190.pdf
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Diversitet af insekternes svampesygdomme i økologisk jordbrug - hvorledes kan den øges? Organic Eprints
Meyling, Nicolai V.; Eilenberg, Jørgen.
Det er et vigtigt mål i økologisk jordbrug at inddrage skadedyrenes naturlige fjender i reguleringen af skadedyrpopulationer. En vigtig gruppe af disse fjender er insekternes naturligt forekommende svampesygdomme, som blandt andet findes i jorden. Danske studier viser, at landbrugslandet rummer en stor diversitet af disse svampe, og det er en fremtidig udfordring at udnytte denne diversitet i regulering af skadedyrspopulationer.
Tipo: Newspaper or magazine article Palavras-chave: Biodiversity and ecosystem services.
Ano: 2007 URL: http://orgprints.org/11199/1/11199.pdf
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Insect pathogenic fungi in biological control: status and future challenges Organic Eprints
Eilenberg, Jørgen; Meyling, Nicolai V.; Jensen, Annette B..
In Europe, insect pathogenic fungi have in decades played a significant role in biological control of insects. With respect to the different strategies of biological control and with respects to the different genera of insect pathogenic fungi, the success and potential vary, however. Classical biological control: no strong indication of potential. Inundation and inoculation biological control: success stories with the genera Metarhizium, Beauveria, Isaria/Paecilomyces and Lecanicillium (previously Verticillium). However, the genotypes employed seem to include a narrow spectrum of the many potentially useful genotypes. Conservation biological control: Pandora and Entomophthora have a strong potential, but also Beauveria has a potential to be explored...
Tipo: Conference paper, poster, etc. Palavras-chave: Regulation; Markets and trade; Biodiversity and ecosystem services.
Ano: 2009 URL: http://orgprints.org/16060/2/16060.pdf
Registros recuperados: 12
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