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| Registros recuperados: 1.933 | |
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| Bomford, M.K.; Vernon, R.S.; Pats, Peeter. |
| Aphids accumulate near exclusion fences designed to intercept Delia radicum (L.) movement into fields. Aphid accumulations increase with fence height, but are not affected by fence overhang length. Overall aphid levels are higher in small (4.3 x 4.3 m) enclosed plots than in unenclosed plots. Enclosing large (38 x 38 m) plots does not alter overall aphid catches, but does alter aphid distribution within enclosures. In large enclosures aphid accumulations are higher at enclosure perimeters than interiors, with the highest accumulations near enclosure corners. This concentric distribution is not observed in unfenced areas, and is not altered by the addition of a trap crop inside an enclosure. |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Vegetables Biodiversity and ecosystem services. |
| Ano: 2000 |
URL: http://orgprints.org/8064/1/8064.pdf |
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| Spitaler, Renate; Marschall, Klaus; Zidorn, Christian; Kelderer, Markus; Zelger, Roland; Stuppner, Hermann. |
| The growth inhibiting effect of four commercially available grapefruit seed extracts on the causal organism of apple scab Venturia inaequalis was tested. Germination of the conidia of Venturia inaequalis was pronouncedly inhibited by all tested extracts. The commercial products were analyzed by high pressure liquid chromatography and thin layer chromatography. All samples contained at least one preserving agent. These substances were identified as either benzethonium chloride, benzalkonium chloride, methyl parabene or propyl parabene. Freshly prepared extracts from seeds of grapefruits (Citrus paradisi) did not inhibit the germination of Venturia inaequalis. It was therefore concluded that the antifungal effect of grapefruit seed extracts is... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2004 |
URL: http://orgprints.org/14543/1/39_Kelderer_208_211.pdf |
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| Daniel, Claudia; Wyss, Eric; Linder, Christian. |
| Autumn applications of sulphur – a new approach to control the pear leaf blister mite Eriophyes pyri. Abstract: The pear leaf blister mite can cause severe damage to pear leaves and young fruits in some regions. Due to hidden living inside leaf blisters, the mites are largely protected against the impact of plant protecting agents. Until now, treatments with mineral oil or rape oil in early spring, during the time when the mites leave their hibernation sites under the bud scales to invade the young leaves and blossoms, are the only possibility to control these mites in Swiss organic fruit growing. The aim of this study was to examine the effects of sulphur, mineral oil and Surround®WP applied after harvest during the time, when the mites leave their... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2004 |
URL: http://orgprints.org/6139/1/daniel%2D2004_04SchwefelPockenmilbeRSVAH.pdf |
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| Qin, Feifei; Xu, Hui-lian; Takano, Tetsuo. |
| The AnM practices in peanut production included three steps. The three letters, A, n and M, showed the shapes of the section-cross of the ridge at the three steps of different growth stages of the peanut crop. First, the peanut seeds were sown a little deeper than usual, about 8 cm, in the ridge to induce the extra-elongation of the hypocotyl. When the seeds were sown, the cross-section of the ridge looked like the letter “A”. The second, the hypocotyls elongated more than usual were exposed to light and dry air by removing the soil away around the young seedlings just after the emergence. At this time, the cross-section of the ridge looked like the letter “n”. The third, at the middle growth stages, soils on the both sides of ridge were earthed up to... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Environmental aspects. |
| Ano: 2014 |
URL: http://orgprints.org/23740/1/23740%20Qin%20et%20al.%20IFOAM%202014%20Peanut_MM.pdf |
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| State of the Art: Many organic pesticides have reduced effectiveness due to UV degradation. New application techniques (e.g. under-leaf application) could help to solve this problem in organic vegetable production. Definition of the problem: All microbial biocontrol agents and pesticides of vegetal origin are UV degraded. New application technology could augment effectiveness of these products. Project aims: Find new application technologies for a more adapted application of organic pesticides and microbial biocontrol agents in organic vegetable production. Methodology: On-farm test of different new application techniques and with different pesticide agents. |
| Tipo: Project description |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2023 |
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| Pinnschmidt, H.O.; Hovmøller, M.S.; Østergård, H.. |
| The resistance of spring barley varieties to powdery mildew, leaf rust, leaf scald and net blotch was characterized by using results from inoculated small-plot nurseries and larger survey plots subject to natural infection. The experiments were conducted in different environments. Both trial types often yielded complementary results with respect to the ranking of varieties suggesting that a recommended variety characterization should include both naturally infected survey-type trials and nursery trials in which the most relevant pathogen isolates and/or isolate mixtures or populations are used for inoculation. Average and median values of the diseased leaf area of a variety were highly correlated with each other and with the genotype main effect determined... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/8203/1/8203.pdf |
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| Wyss, Eric; Luka, Henryk; Pfiffner, Lukas; Schlatter, Christian; Gabriela, Uehlinger; Daniel, Claudia. |
| Although the European organic agriculture movement was founded by Rudolf Steiner and Hans Mueller in the years between 1924 and 1940, it was not until the 1980s that pest management researchers began to develop strategies to control pests in organic systems. Today, insect pest management in organic agriculture involves the adoption of scientificallybased and ecologically sound strategies as specified by international and national organic production standards. These include a ban on synthetic insecticides and, more recently, on genetically modified organisms (GMOs). The first phase of an insect pest management program for organic systems is the adoption of cultural practices including diverse crop rotation, enhancement of soil quality by incorporation of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2005 |
URL: http://orgprints.org/8717/1/Wyss-2005-OrganicResearchAustralien.pdf |
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| LE PICHON, V; Romet, L.; Lambion, Jérôme. |
| La gestion des bio-agresseurs repose, selon les principes de l'agriculture biologique, sur une approche globale de l'agrosystème en lien avec les écosystèmes environnants. Cependant la demande par les producteurs de solutions de protection rapidement opérationnelles peut amener l'expérimentateur à privilégier la recherche de mesures basées sur les produits phytosanitaires. Depuis 30 ans, le Groupe de Recherche en Agriculture Biologique (GRAB) conduit des expérimentations en productions végétales biologiques. Il a cherché à développer une grille d'analyse de ses résultats pour les situer vis-à-vis des principes de l’approche globale des écosystèmes. Cette analyse s'est inspirée de différentes approches multi-niveaux de la protection des cultures. Elle... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/15452/1/15%2DLePichon.pdf |
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| Die Sonnenblume ist die wichtigste Ölpflanze des ökologischen Anbaus. Ziel des Projektes war die Evaluierung von Sonnenblumensorten auf Resistenz gegen Grauschimmel, Korb- und Stängelfäule und gegen den Falschen Mehltau sowie auf die agronomischen Merkmale Achänenertrag, Trockensubstanz- und Fettgehalt der Achänen. Im Rahmen des Projektes wurden 16 Sorten und Testhybriden unter den Bedingungen des ökologischen Landbaus an zwei Standorten mit jeweils 3 Wiederholungen angebaut. Aufgrund des trockenen und heißen Jahres traten in den Versuchen keine Sonnenblumenkrankheiten auf. Die Sorten unterschieden sich am Standort Eckartsweier signifikant in ihrer Leistungsfähigkeit. Am Standort Honau und verrechnet über beide Standorte waren die Unterschiede zwischen... |
| Tipo: Project description |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2023 |
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| SIMON, S.; BUSSI, C.; GIRARD, T.; CORROYER, N.. |
| Un programme de recherche a été conduit en arboriculture biologique pendant 11 ans (1994-2004) à l'unité expérimentale INRA (Institut National de la Recherche Agronomique) de Gotheron dans le Sud-Est de la France, en partenariat avec Agribiodrôme (F-26150 Die), asssociation de développement de l'Agriculture Biologique (AB) en Drôme, et le GRAB (Groupe de Recherche en Agriculture Biologique, F-84911 Avignon). Les objectifs étaient : (i) acquérir des références en arboriculture biologique ; (ii) identifier et analyser les verrous techniques de la production de pêches et pommes biologiques, afin d'optimiser la conduite des vergers AB et/ou de proposer de nouvelles expérimentations ; (iii) évaluer à long terme l'impact du mode de production pour le sol et la... |
| Tipo: Report |
Palavras-chave: Crop health; Quality; Protection Biodiversity and ecosystem services Soil quality. |
| Ano: 2006 |
URL: http://orgprints.org/8953/1/AB_INRA_Gotheron_2006.pdf |
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| Weibel, F.P.; Bickel, R.; Leuthold, S.; Alfoeldi, T.. |
| Since 1994 important supermarket chains in Switzerland successfully sell apples from verified organic production. However, in supermarkets customers often ask whether there are, apart from a more environmentally friendly production, objective arguments of inner fruit quality that justify the higher prices of organic apples. In a field study with the ‘Golden Delicious’ cultivar, we harvested fruits of 5 pairs of organic/integrated fruit farms. The orchards within the pairs were less than 1 km from each other and were similar in micro climate, soil conditions and planting system. Maximum distance between the pairs was 180 km. To measure inner fruit quality we investigated at the beginning and at the end of cold storage (i) standard parameters (firmness,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Fruit and berries. |
| Ano: 2000 |
URL: http://orgprints.org/866/1/Acta_IPBio_1998_517_53_%282%29.pdf |
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| Dagostin, Silvia; Schärer, Hans-Jakob; Pertot, Ilaria; Tamm, Lucius. |
| Downy mildew caused by the obligate biotrophic oomycete Plasmopara viticola is one of the most important and devastating diseases of grapevine. Copper-based fungicides are used to control the disease in organic vineyards. However, since 2006, copper use has been limited by an European Commission regulation. In this study conducted from 2004 to 2007, we tested materials that might replace copper in organic viticulture, under controlled greenhouse and field conditions at two locations in Europe (northern Italy and Switzerland). We tested 112 different treatments, including biocontrol agents, materials of animal origin, homeopathic preparations, inorganic materials, microbial extracts, natural derivatives, plant extracts, physical methods and synthetic... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2011 |
URL: http://orgprints.org/26499/1/JCRP2633_DAgositn_etal_2011.pdf |
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| Zehnder, Geoff; Gurr, Geoff M.; Kühne, Stefan; Wade, Mark R.; Wratten, Steve D.; Wyss, Eric. |
| Burgeoning consumer interest in organically produced foods has made organic farming one of the fastest growing segments of agriculture. This growth has not been supported adequately by rigorous research to address challenges such as arthropod pest management. The research that has been conducted, however, is complemented by research in aspects of conventional agriculture that may have applicability in organic systems, as well as by research in underpinning fields such as applied ecology. This article synthesizes the available literature in relation to a conceptual model of arthropod pest management strategies suitable for organic systems. The present work uses the four phases of the model to review the strategies in an agroecological context and provides a... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2007 |
URL: http://orgprints.org/13126/1/Zehnder%2Detal%2D2007%2DAnnuals_of_Entomology.pdf |
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| Döring, Thomas F.; Heimbach, Udo; Thieme, Thomas; Saucke, Helmut. |
| In Praxisversuchen wurde über drei Jahre der Einfluss von Strohmulch auf das Auftreten von PVY (Potato virus Y), den Befall mit dem Kartoffelkäfer (Leptinotarsa decemlineata) und den Knollenertrag in ökologisch angebauten Kartoffeln untersucht. Strohmulch führte in drei von 17 Experimenten zu einer signifikanten Reduktion von PVY, und in weiteren sieben Versuchen gab es einen nicht-signifikanten Trend zur erminderung von PVY. Der Effekt von Strohmulch auf PVY scheint vom allgemeinen Infektionsniveau abzuhängen, welches je nach Jahr, Standort und Sorte unterschiedlich war. So gab es in den Jahren 2002 und 2004 bei allgemein hohem Infektionsdruck eine konsistente PVY-Verminderung. Im Gegensatz dazu konnte im Jahr 2003, bei nur sehr geringem Infektionsdruck,... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2006 |
URL: http://orgprints.org/19800/1/2006%2DDoring_et_al%2DNBDP%2DII.pdf |
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| Döring, Thomas F.; Heimbach, Udo; Thieme, Thomas; Finckh, Maria R.; Saucke, Helmut. |
| Die Anwendung von Strohmulch als eine mögliche Strategie zur Reduzierung von Bodenerosion, Virusinfektionen und Nachernte-Stickstoffverlusten in Kartoffeln wurde hinsichtlich der Effekte auf die Krautfäule (Phytophthora infestans [MONT.] DE BARY) und auf die Pockenkrankheit (Rhizoctonia solani KÜHN) in ökologisch geführten Feldexperimenten über drei Jahre an vier Standorten in Deutschland untersucht. Der Krautfäulebefall wurde in 15 Versuchen als Prozent befallener Blattfläche oder Prozent der Blätter mit Läsionen bonitiert. Rhizoctonia-Pocken auf den geernteten Knollen wurden bei 100 bis 220 Knollen pro Parzelle in 18 Feldversuchen bonitiert. Zusätzlich wurde in einem Feldversuch der Einfluss von Strohmulch auf die Lufttemperatur und die relative... |
| Tipo: Journal paper |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2006 |
URL: http://orgprints.org/19802/1/2006%2DDoring_et_al%2DNBDP%2DI.pdf |
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| Fittje, S; Döring, T; Saucke, H; Böhm, H. |
| Presprouting of seed tubers is a measure that is often recommended for organic potato growing. In on-farm field experiments the effect of presprouting was evaluated with respect to virus infection, yield and weed infestation. The effect of presprouting on yield was largely dependent on the year and on the late blight severity. Weeds were not affected significantly by presprouting. In most experiments virus incidence was higher in presprouted potatoes. Presprouting also had a suppressive effect on undesired regrowth after haulm destruction. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Root crops. |
| Ano: 2005 |
URL: http://orgprints.org/3756/1/3756.pdf |
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| Registros recuperados: 1.933 | |
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