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Control of grey mould can be very difficult, particularly when weather conditions are favourable for B. cinerea during ripening. Control strategies have been experimented during ten years in the French part of Switzerland with the mixture fludioxonil + cyprodinil. One single application at the end of bloom reaches an average value over the years of 30 % efficacy compared with unsprayed plots. ...

SUBJECT: methode de lutte; botrytis cinerea; suisse; grapevines; suiza

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

Crop load regulation is often necessary in order to achieve an optimal pear quality and regular production. This regulation is performed manually leading to supplementary costs that limit economical productivity of pear crops. The aim of this study was to assess the phytotoxicity and the efficiency of chemical thinner on four pear cultivars. Depending on the thinner, the application exhibited ...

SUBJECT: reglementation; efficacite; efficiency; poire; reglamentaciones

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

Apple texture, particularly firmness, figures among the main attributes of fruit quality in commercial transactions. The reference method for controlling apple firmness is penetrometry (destructive and punctual measure). The development of new technologies and new methods for signal analysis should permit to progress in domain of nondestructive measurement of fruit quality. The acoustic measur ...

SUBJECT: technologie; manzana; texture; mesure; textura

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

Since the appearance of the quarantine disease flavescence dorée, Swiss winegrowers' general awareness for the bois noir disease has considerably increased. Both grapevine yellows diseases elicit identical symptoms and are transmitted by insects. Hyalesthes obsoletus Signoret (Hemiptera, Cixiidae) is assumed to be the principal vector of bois noir in Europe. Its nymphs normally develop on the ...

SUBJECT: suisse; fitoplasmas; surveys; epidemiologie; enfermedades de las plantas

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

Energy saving in greenhouse with temperature integration in a gerbera crop

Gilli, C., Station de recherche Agroscope Changins-Waedenswil ACW [may-jun2010]

Modifying the climatic steering by using temperature integration (IT) over 24 hours is one of the ways of realising energy saving in greenhouse crops. A trial conducted from 2007 to 2009 in soilless gerbera crop showed that about 15 % energy saving for the whole crop was possible. The yield in number of stems per square metre, the stems development rate as well as the vase life duration were n ...

SUBJECT: plante; aptitud para la conservacion; asteraceae; keeping quality; plante de serre

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

Oregano essential oil is rich in carvacrol and is recently the subject of a great interest for its use in the production of feed additives, mainly for his antimicrobial properties. The French region of Franche-Comté launched a project to determine the economic potential of this new culture. Three commercial varieties of oregano, Carva, Origalia and Bolier were evaluated on three sites with ver ...

SUBJECT: plante a huiles essentielles; essai de variete; epice; especias; essential oil crops

POSTED TO: Revue suisse de viticulture, arboriculture, horticulture (Switzerland) [0375-1430]

La station de recherche Agroscope Changins-Wädenswil ACW ainsi que l'Institut de la vigne et du vin de Freiburg en Allemagne se sont associés depuis 2002 pour développer le modèle de prévision VitiMeteo-Plasmopara pour le mildiou de la vigne. Ce logiciel intègre chaque jour les données météorologiques nécessaires et calcule les périodes d'infections. Les résultats sont présentés quotidiennemen ...

SUBJECT: suisse; infection; maitrise du temps; grapevines; sistemas de informacion

POSTED TO: Obst- und Weinbau. Schweizerische Zeitschrift fuer Obst- und Weinbau der Eidg. Forschungsanstalt Waedenswil (Switzerland) [1023-2958]

Sunburn of apples

Wagner, J., Universitaet Leipzig et al. [may2010]

Depuis quelques années, les manifestations d'un échauffement climatique global se multiplient. Parmi les signes qui ne trompent pas: les dégâts causés par les brûlures du soleil sur les cultures arboricoles et maraîchères. Pour remédier à ce problème, plusieurs paramètres météorologiques ont été étudiés par rapport aux pommiers, en particulier la température de l'air et le rayonnement global. ...

SUBJECT: heat; cambio climatico; climatic change; meteorological factors; tiempo meteorologico

POSTED TO: Obst- und Weinbau. Schweizerische Zeitschrift fuer Obst- und Weinbau der Eidg. Forschungsanstalt Waedenswil (Switzerland) [1023-2958]

Pollen flight and xenogamy in grapes

Harst, M. et al. [may2010]

La méfiance envers les cultures transgéniques plantées à ciel ouvert tient notamment à la crainte d'une prolifération incontrôlée de patrimoine génétique modifié par des pollinisations croisées. Qu'en est-il pour les vignes dont les fruits se forment essentiellement par autopollinisation, mais où une pollinisation croisée par des pollens que charrie le vent n'est pas à exclure complètement ? D ...

SUBJECT: flight; plante transgenique; pollen; germany; croisement

POSTED TO: Obst- und Weinbau. Schweizerische Zeitschrift fuer Obst- und Weinbau der Eidg. Forschungsanstalt Waedenswil (Switzerland) [1023-2958]

Application technique in fruit growing, part 1 Targeted application as technological challenge

Geyrhofer, A. F., Lehr- und Forschungszentrum Wein- und Obstbau [may2010]

Les enjeux de la technique d'application dans l'arboriculture sont aujourd'hui multiples: ils vont de l'effectivité des produits phytosanitaires utilisés à la diminution de l'impact écologique. Dans la pratique arboricole, cela signifie que les gouttelettes appliquées devraient se déposer sur les surfaces visées des sujets traités avec un minimum de dérive. En d'autres termes, l'utilisation de ...

SUBJECT: technique; enfermedades de las plantas; fruits; pesticides; maladie des plantes

POSTED TO: Obst- und Weinbau. Schweizerische Zeitschrift fuer Obst- und Weinbau der Eidg. Forschungsanstalt Waedenswil (Switzerland) [1023-2958]