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Critical yield-point model to estimate damage caused by brown spot and powdery mildew in barley Ciência Rural
Agostinetto,Lenita; Casa,Ricardo Trezzi; Bogo,Amauri; Sachs,Cristiano; Reis,Erlei Melo; Kuhnem,Paulo Roberto.
Barley (Hordeum vulgaris L.) is the second most important winter crop in Southern Brazil. The excessive rainfall in this region during the crop-growing season increases the frequency and intensity of foliar fungal diseases. The research aimed to determine the damage function equations (DFE) for the multiple pathosystem of barley brown spot and powdery mildew based on the relationship between grain yield and diseases intensity at different 'BRS Cauê' cultivar growth stages (GS) during 2009 and 2010 growing seasons in Southern Brazil. The experiments were arranged in a randomized complete block design with nine treatments and four replicates. The disease gradients were generated by strobilurins and triazols fungicides rates and number of applications on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bipolaris sorokiniana; Blumeria graminis f. sp. hordei; Hordeum vulgare; Multiple pathosystem; Economic damage threshold.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000600001
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