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  • Podosphaera aphanis x
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( Vitis vinifera ), apple ( Malus × domestica ), and oak ( Quercus sp.) ( Agrios, 1997 ). Strawberry PM is caused by the obligate parasite Podosphaera aphanis (formerly Sphaerotheca macularis ). Podosphaera aphanis conidia are primarily wind

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significantly impacted by powdery mildew ( Phyllactinia guttata , Podosphaera aphanis var. physocarpi , and Podosphaera macularis ) and feeding damage from the specialist ninebark beetle ( Calligrapha spiraeae ). Lubell et al. (2011) surveyed several

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species complex) were described previously ( MacKenzie et al. 2006 ; Seijo et al. 2011 , 2022a , 2022b ). The natural disease incidences for powdery mildew (caused by Podosphaera aphanis ) and Botrytis fruit rot (caused by Botrytis cinerea ) were

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’ susceptibility to Verticillium dahliae , Phytophthora cactorum , Podosphaera aphanis , Macrophomina phaseolina , and Colletotrichum acutatum was evaluated such as described in Avilés et al. (2009) , De los Santos et al. (2009) , Redondo et al. (2009

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al. (2011) , Mertely et al. (2014a , 2014b ), and MacKenzie et al. (2006) . Foliar powdery mildew (caused by Podosphaera aphanis ) was evaluated in a high tunnel with increased relative humidity, and percent leaf area with mycelia was visually

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Podosphaera aphanis on strawberry plants Can J Plant Pathol. 38 430 439 https://doi.org/10.1080/07060661.2016.1263807 Kiss, L Takamatsu, S Cunnington, JH. 2005 Molecular identification of Oidium neolycopersici as the causal agent of the recent

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concentrations has been observed for many powdery mildew pathogens including Oidium sp. in greenhouses ( Byrne et al., 2000 ), Podosphaera leucotricha in an apple orchard ( Sutton and Jones, 1979 ), and Podosphaera aphanis in strawberry fields ( Blanco et

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). The causal agent of powdery mildew in strawberry is the obligate, biotrophic fungus, Podosphaera aphanis (Wallr.) U. Braun and S. Takam. [formerly Sphaerotheca macularis (Wall. ex Fries) Jacz f. sp. fragariae (Peries)]. The signs and symptoms of

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agent Podosphaera aphanis ) describes foliar symptoms only. Mortality due to colletotrichum crown rot (causal agent Colletotrichum gloeosporioides ), phytophthora crown rot (causal agent Phytophthora cactorum ), and charcoal rot (causal agent

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. However, by 30 months after planting (Nov. 2016), the scores had dropped to 2.33/5.00 with one of three plots completely dead. ‘Kokanee’ plants in tunnel production in a subtropical environment were susceptible to powdery mildew [ Podosphaera aphanis

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