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S. Afr. J. Enol. Vitic., Vol. 31, No. 2, 2010 Protection of Grapevine Pruning Wounds against Eutypa lata by Biological and Chemi

S. Afr. J. Enol. Vitic., Vol. 31, No. 2, 2010 Protection of Grapevine Pruning Wounds against Eutypa lata by Biological and Chemi
General Info The Society has established the South African Journal of Enology and Viticulture (SAJEV) which publishes the most recent results of both local and international research activities bi-annually. The journal has international circulation and compares favourably to similar journals world-wide. To subscribe please complete this form and fax it to SASEV office. Subscription for 2014 is R525 for S.A. subscribers, and R1 050 for subscribers from other countries. Downloadable articles (full pdf) from Vol.1 up to the most recent volume is now available directly from this site! Abbreviation: S. Two editions per year. Indexing: EBSCO, CAB Abstract, Thomson Reuters (Formerly ISI) Services: Science Citation Index Expanded (SciSearch), Journal Citation Reports (JCR) / Science Edition The impact factor for South African Journal of Enology and Viticulture currently stands at 1.193. Related:  Informations anglophones concernant l'Eutypiose

PLANT MANAGEMENT NETWORK - 2001 - Eutypa Dieback of Grapevine and Apricot Eutypa Dieback of Grapevine and Apricot Gary P. Munkvold, Department of Plant Pathology, Iowa State University, Ames, IA 50010 Disease: Eutypa dieback Primary Economic Host: Vitis L. spp. Pathogen: Eutypa lata (Pers:Fr.) Taxonomy The pathogen on apricot was originally described as E. armeniacae (1). Symptoms and Signs Grapevine. Apricot. Host Range E. lata occurs on at least 88 species of woody dicots in 52 genera (3,5), including many forest and ornamental species. Geographical Distribution E. lata has been reported from Australia, Brazil (14), Canada, Israel, Libya, Mexico, New Zealand, South Africa, the United States, and several countries in Europe. Isolation E. lata can be isolated only from the perennial wood of the host. Ascospores can be isolated from fresh perithecia in active stromata (15,16). Identification E. lata can be identified by characteristics of the stromata, asci, and ascospores. Storage E. lata is usually stored as mycelium. Pathogenicity Tests Literature Cited 1. 2. 3. 4.

WIKIPEDIA - Frankliniella occidentalis Un article de Wikipédia, l'encyclopédie libre. Le thrips des petits fruits, ou thrips californien (Frankliniella occidentalis (Pergande)), est un important insecte ravageur des cultures. Cette espèce de thrips est originaire d'Amérique du Nord mais s'est répandue dans les autres continents dont l'Europe, l'Australie et l'Amérique du Sud à la faveur de la dispersion de plantes infectées[1]. Il peut se développer sur environ 500 plantes hôtes dont de nombreuses cultures d'arbres fruitiers et de plantes maraîchères et ornementales. Description[modifier | modifier le code] Le mâle adulte a environ 1 millimètre de long, la femelle est légèrement plus grande, environ 1,4 millimètre de long. Cycle biologique[modifier | modifier le code] Le cycle biologique du thrips des petits fruits a une durée variable car les adultes peuvent vivre de deux à cinq semaines ou plus et la nymphe peut vivre de 5 à 20 jours. Dégâts[modifier | modifier le code] L'insecte attaque les plantes de plusieurs manières.

JOURNAL OF INSECT SCIENCE - OCT 2010 - Référence bibliographique: Imidacloprid resistance detected in Australian Thrips tabaci L This site uses cookies to improve performance. If your browser does not accept cookies, you cannot view this site. Setting Your Browser to Accept Cookies There are many reasons why a cookie could not be set correctly. Below are the most common reasons: You have cookies disabled in your browser. Why Does this Site Require Cookies? This site uses cookies to improve performance by remembering that you are logged in when you go from page to page. What Gets Stored in a Cookie? This site stores nothing other than an automatically generated session ID in the cookie; no other information is captured. In general, only the information that you provide, or the choices you make while visiting a web site, can be stored in a cookie.

IFV - Les amines biogènes dans les vins Les composés du vin susceptibles d’avoir une incidence sur la santé humaine sont de plus en plus étudiés. Connues depuis Hyppocrate comme responsables d'incidents physiologiques pour l'homme, les amines biogènes sont présentes dans les aliments et boissons, issus en particulier de fermentation par des bactéries lactiques. Quelle est l'origine des amines biogènes retrouvées dans le vin ? Biochimiquement, les amines biogènes proviennent pour la plupart de la décarboxylation d'acides aminés sous l'action de décarboxylases, assistées de phosphate de pyridoxal (coenzyme dérivé de la vitamine B6), de levures et de bactéries. Les amines biogènes sont donc associées à une origine fermentaire. haut de la page Comment évoluent les teneurs des vins en amines biogènes en cours d'élevage ? Des essais menés par l'IFV de Bourgogne sur 17 vins de Pinot Noir ont montré que l’histamine, la tyramine et la putrescine n’apparaîssaient pas pendant la FA, mais pendant et après la FML.

Phytopathology. 2010 Oct;100(10):1048-56. Host range, biological variation, and phylogenetic diversity of Eutypa lata in Califor FREDON CORSE - Le thrips californien Frankliniella occidentalis Le thrips californien Frankliniella occidentalis Espèce cosmopolite originaire d'Amérique du nord. En Europe on retrouve cette espèce au Portugal, en Espagne, France, Royaume-Uni, Belgique, Pays-Bas, Allemagne, Autriche, Suisse, Italie, Grèce, en Autriche, Croatie, Finlande, Suède, Hongrie, ... principalement sous serres mais aussi en champ dans les régions méridionales. Les pontes et prises alimentaires du thrips californien détériorent la valeur commerciale des végétaux attaqués. Ordre : Thysanoptère - Famille : Thripidae Statut réglementaire : organisme de quarantaine Photos Forestry images Imprimer cette page Fiche technique Plantes hôtes : Frankliniella occidentalis est une espèce très polyphage que l'on retrouve sous serres notamment sur gerbera, cyclamens, chrysanthèmes, saintpaulia, rosiers, ... mais aussi sur tomates, poivrons, concombres, aubergines, laitues. Morphologie : A) les adultes Les adultes mâles mesurent environ 1,3 mm et sont jaune pâle. B) Les pré-nymphes et le nymphes

CORNELL UNIVERSITY - Ognon thrips InformationCommon Name | Scientific Name | Geographic Distribution | Recognition and Diagnosis | Host | Biology and Ecology | Damage and ImportanceControl Sampling and Economic Thresholds | Control Strategies Information Common Name: English: Onion thrips, thrips, thunderflies Spanish: Trips de la cebolla, trips Scientific Name: Thrips tabaci (Lindeman) (Thysanoptera: Thripidae) Geographic Distribution: World wide. Pupae Size and Form: Very small. Eggs Size: Eggs are microscopic and almost impossible to see.Color: White or yellow.Location: Eggs are inserted one by one by the females in the plant tissue. Host: Onions, garlic and other related plants are the prefered hosts of thrips. Biology and Ecology: Thrips can complete the life cycle in 14 to 30 days. Thrips prefer to feed on the young plant tissue on the newest emerged leaves. In severe attacks the whole plant can turn white or silver and leaves can wither. Control Sampling and economic thresholds: Where to sample: Control Strategies: Irrigation

PHYTOPATHOLOGIA MEDITERRANEA - 2013 - Statistical analysis of grapevine mortality associated with esca or Eutypa dieback foliar The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader). If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs. Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above. Fullscreen Fullscreen Off Thrips californien Frankliniella occidentalis - Thrips californien 1- Identification Vecteur principal du Tomato Spotted Wilt Virus (TSWV). Ils sont polyphages : gerbera, cyclamen, saintpaulia, rosier, impatiens, cinéraire, verveine, etc. Les adultes sont de petits insectes allongés (1 à 3 mm) dont les ailes sont frangées de longues soies permettant un vol planant. Ils se déplacent aussi en marchant et en sautant. (Fig. 1) Attaque sur chrysanthème. (Fig. 2) Dégâts sur pétales de rose. 2- Dégâts observés Nombreuses lésions sur feuilles qui prennent une couleur argentée. 3- Stratégie de lutte Traiter le soir quand la lumière décline et par température élevée afin qu’ils soient actifs et sortent des caches. 4- Réglementation Organisme réglementé pour l’importation au sein de l’Annexe IV - I et pour le Passeport Phytosanitaire Européen (P.P.E.) au sein de l’annexe IV - II de la Directive Européenne 2000/29/CE modifiée retranscrite dans l’arrêté national du 22 novembre 2002. Source iconographique de cet article :

Heredity (2004) 93, 364–370 Host-associated genetic differentiation in Thrips tabaci (Insecta; Thysanoptera), as determined from mtDNA sequence data Heredity (2004) 93, 364–370. doi:10.1038/sj.hdy.6800512 Published online 7 July 2004 Top of page Introduction Thrips comprise a single insect order with around 5000 described species. Thrips tabaci (Thysanoptera; Terebrantia) is a widespread pest that has attracted special interest as the first identified vector of tomato spotted wilt virus (TSWV), a tospovirus with a wide host range that is capable of causing serious epidemics and crop losses. Resolution of the taxonomic status of T. tabaci populations has been hampered by a lack of population genetic studies. This study investigates the evolutionary relationship of T. tabaci populations based on sequence variation of the mitochondrial cytochrome oxidase I (COI) gene. Materials and methods Data collection T. tabaci were collected on leek and tobacco plants from 22 sites in Switzerland, Greece and Bulgaria (Figure 1). Figure 1. Full figure and legend (98K) Figure 2. Maximum-likelihood tree based on the TMV+I+G evolutionary model. Figure 3.

GROWING PRODUCE 28/05/15 Tips For Grapevine Trunk Disease Diagnostics, Prevention, and Control Various pathogens and environmental factors are considered to be major threats to the vineyard’s health. Pathogens are disease-causing organisms such as fungi, bacteria, viruses, nematodes, and insects. In addition, adverse environmental conditions such as frost, hail, heat, chemical injury, nutrient toxicity or deficiency, improper cultural practices, and sanitation have an effect on vineyard health. As an example, a vineyard might be infected with pathogens without showing symptoms until adverse environment conditions compromise the plant defense mechanisms and trigger disease progression. Our lab focuses on the detection and control of pathogens that are propagated by grafting (i.e., graft transmitted pathogens). Frequently-Found Pathogens The fungal pathogens most frequently found in the vineyard can cause different diseases depending on the age of the vine. The Cylindrocarpon spp. Many of these pathogens are soil-borne and or airborne and may be present in the vineyard.

PEST TECHNOLOGY - 2009 - Western flower thrips (Frankliniella occidentalis) management on Ornamental crops grown in greenhouses: have we reached an Impasse? Recherche avancée Scholar Recherche avancée Articles contenant ex. : "P Flajolet" ou J Fauvet ex. : Journal de la Société de biologie ou Revue Romane ex. : 1996 Scholar [PDF] academia.edu [PDF][PDF] Western flower thrips (Frankliniella occidentalis) management on ornamental crops grown in greenhouses: have we reached an impasse RA Cloyd - Pest Technology, 2009 - academia.edu ABSTRACT Western flower thrips, Franklinella occidentalis (Pergande) is considered the most destructive insect pest of greenhouse-grown crops due to direct feeding damage to plant parts such as foliage and flowers, and indirect damage by vectoring the tospoviruses; impatiens necrotic spot and tomato spotted wilt virus. Cité 41 fois Autres articles Les 2 versions Citer EnregistrerEnregistrement en cours…...Erreur d'enregistrement. À propos de Google Scholar Confidentialité Conditions Envoyer des commentaires

JOURNAL OF PESTICIDE SCIENCE - 2016 - Cypermethrin resistance and reproductive types in onion thrips, Thrips tabaci (Thysanoptera: Thripidae) Reproductive type determination of T. tabaci based on progeny production of the adult females takes a considerable amount of time. A time-saving method for discrimination of the reproductive types using the COI sequences was reported by Takeuchi and Toda.15) However, some insects exhibiting arrhenotoky were classified incorrectly as showing thelytoky according to the COI-based method.16) In fact, in this study, the reproductive type of one strain (KOC16) was predicted incorrectly based on COI-based method (Table 2). Consequently, reproductive types determined by progeny production of the adult females were used in this study. The LC50 values of the KOC2, KOC2442, KOC16, TOK6, TOK401, and KAG2-1 strains were 70.982 mg/L (KAG2-1)–393.06 mg/L (TOK401) (Table 2). The agriculturally recommended concentration of cypermethrin for T. tabaci in onions is 30 mg/L in Japan. Takezawa14) reported that most strains encoding T929I are arrhenotokous.

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