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      Incidence of downy mildew Plasmopara viticola (Berk. et Curtis ex. de Bary) Berl. et de Toni in Terceira island, Azores

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          Abstract

          Downy mildew is one of the most economically important disease affecting vine production in Terceira island, Azores. By its incidence, frequency and quantity of pathogens, supported with favourable temperate humid climate conditions, this disease is difficult to control in terms of sustainable integrated plant protection policy. The objectives of INTERFRUTA project were to determine the incidence of the disease, to better understand it and to adopt an adequate forecasting model with necessary adjustments to predict the disease appearance and its in-time integrated plant protection control measures. Plasmopara viticola was directly observed in two weeks time periods on seven representative vineyards at different altitudes. Three of the monitored plots were established during study inside one plantation. Incidence was registered as result of visual symptoms in percentage, where 10% of plants in each vineyard were observed. Seasonal evolution of the disease was studied in one of the wine producing area.

          Translated abstract

          O Míldio é uma das doenças que mais afecta a vinha, na ilha Terceira, Açores. É uma doença fúngica de difícil controlo, pela sua incidência e frequência de aparecimento. Os objectivos do projecto INTERFRUTA II foram determinar a incidência desta doença para melhorar o conhecimento sobre esta e adoptar e validar um modelo matemático adequado à previsão do aparecimento da doença de modo a permitir a aplicação de medidas de protecção integrada. A evolução do míldio foi acompanhada em sete parcelas de vinha, da área vitivinícola dos Biscoitos, através da observação visual de folhas. Numa das parcelas, três dos talhões não foram tratados para servirem de controlo. Em cada parcela foram observadas 10% das plantas, tendo sido registada a percentagem de plantas com sintomas visuais da presença de míldio.

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          Introdução à Protecção Integrada

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            Author and article information

            Contributors
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Role: ND
            Journal
            rca
            Revista de Ciências Agrárias
            Rev. de Ciências Agrárias
            Sociedade de Ciências Agrárias de Portugal (Lisboa )
            0871-018X
            December 2008
            : 31
            : 2
            : 134-138
            Affiliations
            [1 ] University of Maribor Slovenia
            [2 ] Centro de Biotecnologia dos Açores Portugal
            [3 ] Serviço de Desenvolvimento Agrário da Terceira Portugal
            [4 ] Universidad de la Habana Cuba
            Article
            S0871-018X2008000200016
            7b2c8e6c-aee1-4b64-9781-2c5fcba2ce26

            http://creativecommons.org/licenses/by/4.0/

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            SciELO Portugal

            Self URI (journal page): http://www.scielo.mec.pt/scielo.php?script=sci_serial&pid=0871-018X&lng=en
            Categories
            AGRICULTURE, MULTIDISCIPLINARY

            General agriculture
            Azores,downy mildew,forecasting model,grapevine,Açores,míldio,previsão,vinha
            General agriculture
            Azores, downy mildew, forecasting model, grapevine, Açores, míldio, previsão, vinha

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